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IS 3812-2 (2033): Specification for Pulverized Fuel Ash,

Part 2: For Use as Admixture in Cement Mortar and Concrete
[CED 2: Civil Engineering]

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IS 3812 (Part 2) : 2013

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Hkkx

elkyk (eksVkZj) o oaQhV esa vifeJ.k dh rjg iz;ksx osQ fy,

( rhljk iqujh{k.k )
Indian Standard
PULVERIZED FUEL ASH SPECIFICATION
PART 2 FOR USE AS ADMIXTURE IN CEMENT MORTAR AND CONCRETE

( Third Revision )

ICS 91.100.10

BIS 2013

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002

May 2013

Price Group 5

Cement and Concrete Sectional Committee, CED 2

FOREWORD
This Indian Standard (Part 2) (Third Revision) was adopted by the Bureau of Indian Standards, after the draft
finalized by the Cement and Concrete Sectional Committee had been approved by the Civil Engineering Division
Council.
Pulverized fuel ash is a residue resulting from the combustion of ground or powdered or crushed bituminous coal
or sub-bituminous coal (lignite). About 80 percent of the total ash is finely divided and get out of boiler along
with flue gases and is collected by suitable technologies. This ash generally and in this standard is termed as fly
ash. It is sometimes referred as chimney ash and hopper ash. The balance about 20 percent of ash gets collected
at the bottom of the boiler and is taken out by suitable technologies and is referred as bottom ash. Fly ash is
collected and stored in dry condition. When fly ash and/or bottom ash is carried to storage or deposition lagoon
or pond in the form of water slurry and deposited, it is termed as pond ash. Whereas, if fly ash and/or bottom ash
is carried to a storage or deposition site in dry form and deposited, it is termed as mound ash.
Pulverized fuel ash is available in large quantities in the country as a waste product from a number of thermal
power stations and industrial plants using pulverized or crushed or ground coal or lignite as fuel for boilers. The
effective use of pulverized fuel ash as a pozzolana in the manufacture of and for part replacement of cement, as
an admixture in cement, cement mortar and concrete, lime pozzolana mixture and products such as fly ash lime
bricks, concrete blocks, asbestos cement products, etc, have been established in the country. Investigations of
Indian pulverized fuel ashes have indicated greater scope for their utilization as a construction material. Greater
utilization of pulverized fuel ash will lead to not only saving of scarce construction materials but also assist in
solving the problem of disposal of this waste product. The investigations have also indicated the necessity to
provide proper collection methods for fly ash so as to yield fly ash of quality and uniformity which are prime
requirements of fly ash for use as a construction material.
This standard was first published in 1966 in three parts to cater to the requirements of fly ash for three specific
uses: Part 1 covering use of fly ash as a pozzolana, Part 2 covering use of fly ash as an admixture for concrete, and
Part 3 covering use of fly ash as fine aggregate for mortar and concrete. The Committee responsible for the
formulation of this standard subsequently felt that the performance of fly ash as a pozzolana or an admixture or
a fine aggregate, was complementary and not separable and hence requirements of fly ash for these uses should
be covered by a single standard. This standard was, therefore, revised in 1981 by combining the three parts into
a single standard, also incorporating the modifications found necessary based on the experience gained with the
use of earlier standards. This revision classified fly ash in two grade, Grade 1 for incorporation in cement, mortar
and concrete and in lime pozzolana mixture, and for manufacture of Portland pozzolana cement, and Grade 2 for
incorporation in cement mortar and concrete and in lime pozzolana mixture.
Improvements have taken place over time in combustion technologies and ash collection technologies. These
technological developments have resulted in improvement in ash qualities; specially the fineness and loss on
ignition. Technologies have also been developed for a large number of utilizations of wide range of pulverized
fuel ash. Application of technologies in the collection, transportation and deposition of ash have also resulted in
availability of pulverized fuel ash in four forms, namely fly ash, bottom ash, pond ash and mound ash. The
second revision was brought out in 2003 as Specification for pulverized fuel ash in two parts. Part 1 covering its
use as pozzolana in cement, cement mortar and concrete and Part 2 covering its use as admixture in cement
mortar and concrete; these parts replaced the specifications of erstwhile Grade I and Grade II. The significant
modifications in the last revision were: four forms of pulverized fuel ash namely fly ash, bottom ash, pond ash
and mound ash defined, new clause on beneficiation, segregation and processing of pulverized fuel ash added,
chemical requirements prescribed on the basis of siliceous and calcareous pulverized fuel ash, requirement for
total chlorides added, additional requirement of particle retained on 45 micron IS Sieve (wet sieving) added
under physical requirements as an optional test, requirement for drying shrinkage, lime reactivity and compressive
strength deleted, and a clause on uniformity requirement added.
(Continued on third cover)

IS 3812 (Part 2) : 2013

Indian Standard
PULVERIZED FUEL ASH SPECIFICATION
PART 2 FOR USE AS ADMIXTURE IN CEMENT MORTAR AND CONCRETE

( Third Revision )
1 SCOPE

3.5 Mound Ash Fly ash or bottom ash or both mixed

in any proportion and conveyed or carried in dry form
and deposited dry.

1.1 This standard (Part 2) covers the extraction and

the physical and chemical requirements of pulverized
fuel ash for use as admixture in cement mortar and
concrete.

3.6 Pond Ash Fly ash or bottom ash or both mixed

in any proportion and conveyed in the form of water
slurry and deposited in pond or lagoon.

1.2 Pulverized fuel ash to be used as admixture in

cement mortar and concrete in accordance with this
standard may be fly ash, bottom ash, pond ash or
mound ash which may be either in as collected
condition or beneficiated, segregated or processed.

3.7 Pulverized Fuel Ash Ash generated by burning

of ground or pulverized or crushed coal or lignite fired
boilers. It can be fly ash, bottom ash, pond ash or
mound ash.
3.8 Reactive Calcium Oxide (CaO) That fraction
of the calcium oxide which under normal hardening
condition can form calcium silicate hydrates or calcium
aluminate hydrates.

2 REFERENCES
The standards given in Annex A contain provisions
which through reference in this text, constitute
provisions of this standard. At the time of publication,
the editions indicated were valid. All standards are
subject to revision and parties to agreements based on
this standard are encouraged to investigate the
possibility of applying the most recent editions of the
standards indicated in Annex A.

NOTE To evaluate this fraction, the total calcium oxide

content is to be reduced by the fraction calculated as calcium
carbonate (CaCO3), based on the measured carbon dioxide
(CO2) content and the fraction calculated as calcium sulphate
(CaSO 4 ), based on the measured sulphate (SO 3) content,
disregarding the SO3 taken up by alkalis.

3.9 Siliceous Pulverized Fuel Ash Pulverized fuel

ash conforming to the provisions of siliceous fly ash
given in this standard and having reactive calcium oxide
less than 10 percent, by mass. Such ash is normally
produced from burning anthracite bituminous coal and
has pozzolanic properties.

3 TERMINOLOGY
For the purpose of this standard, the definitions given
in IS 4305 and the following shall apply.
3.1 Admixture A material other than water,
aggregates, cementitious materials, and fiber
reinforcement, used as an ingredient of a cementitious
mixture to modify its freshly mixed, setting, or
hardened properties and that is added to the batch
before or during its mixing.

4 EXTRACTION OF PULVERIZED FUEL ASH

4.1 Fly ash may be extracted from flue gases of ground
or pulverized or crushed coal or lignite fired boilers
by any suitable process; such as by cyclone separation
or electrostatic precipitation; bottom ash from the
boilers shall not be added to the fly ash. Fly ash
collected at later stages of electro static precipitation
are finer than the fly ash collected at initial stages of
electro static precipitator.

3.2 Bottom Ash Pulverized fuel ash collected from

the bottom of boilers by any suitable process.
3.3 Calcareous Pulverized Fuel Ash Pulverized
fuel ash conforming to the provisions of calcareous
fly ash given in this standard and having reactive
calcium oxide not less than 10 percent by mass. Such
ash is normally produced from burning lignite or subbituminous coal and has both pozzolanic and hydraulic
properties.

4.2 Bottom ash may be extracted from the bottom of

ground or pulverized or crushed coal or lignite fired
boiler by any suitable process. It is generally in the
form of clinkers, which are ground or broken to smaller
size to facilitate extraction.

3.4 Fly Ash Pulverized fuel ash extracted from flue

gases by any suitable process such as by cyclone
separator or electro-static precipitator.

4.3 Pond ash may be extracted from the pond or lagoon

by conventional techniques.
1

IS 3812 (Part 2) : 2013

4.4 Mound ash may be extracted from the mound by
conventional excavation techniques.

6.2 Limits regarding moisture content of pulverized

fuel ash shall be as agreed to between the purchaser
and the supplier; the moisture content being
determined, where required in accordance with
Annex C. All tests for the properties specified in 6.1
shall, however, be carried out on oven dry samples.

5 BENEFICIATION, SEGREGATION AND

PROCESSING OF PULVERIZED FUEL ASH
5.1 Pulverized fuel ash as collected, if does not conform
to the requirements given in Table 1 and Table 2 or if
required otherwise, may be processed and/or
beneficiated and/or segregated to modify its physical
or chemical characteristics to meet the requirements
given in Table 1 and Table 2.

7 PHYSICAL REQUIREMENTS
7.1 Pulverized fuel ash, when tested in accordance with
the methods of test specified in IS 1727, shall conform
to the physical requirements given in Table 2.

5.2 Appropriate technologies may be applied for

beneficiation, segregation and processing of pulverized
fuel ash to improve its properties, such as loss on
ignition, particle size distribution and any of other
physical and/or chemical properties. Some of the
technologies presently in use are burning/removal of
unburnt carbon, sieving/grading of fineness, grinding/
attrition for reducing particle size, thermal treatment
and blending of pulverized fuel ash of different
qualities.

7.2 Uniformity Requirements

In tests on individual samples, the specific surface and
particles retained on 45 IS Sieve (wet sieving) value
shall not vary more than 15 percent from the average
established from the tests on the 10 preceding samples
or of all preceding samples if less than 10.
8 TESTS

6 CHEMICAL REQUIREMENTS

8.1 The sample or samples of pulverized fuel ash for

test shall be taken as described in 9 and shall be tested
in accordance with 6 and 7.

6.1 Pulverized fuel ash, shall conform to the chemical

requirements given in Table 1.

8.2 All tests for the properties of the pulverized fuel

ash shall be carried out in as supplied condition. In

Table 1 Chemical Requirements

(Clauses 5.1 and 6.1)
Sl
No.

Characteristic

(1)
i)
ii)
iii)
iv)
v)
vi)
vii)
1)

Requirements
Siliceous
Fly Ash
(3)

(2)
Silicon dioxide (SiO2) plus aluminium oxide (Al2O3) plus iron
oxide (Fe2O3) in percent by mass, Min
Silicon dioxide (SiO2) in percent by mass, Min
Magnesium oxide (MgO) in percent by mass, Max
Total sulphur as sulphur trioxide (SO3) in percent by mass, Max
Available alkalies as equivalent sodium oxide (Na2O) in percent
by mass, Max
Total chlorides in percent by mass, Max
Loss on ignition in percent by mass, Max

Method of Test, Ref to

Calcareous
Fly Ash
(4)

Annex

IS No.

(5)

(6)

70

50

IS 1727

35
5.0
5.0
1.5

25
5.0
5.0
1.5

IS 1727
IS 1727
IS 1727

IS 40321)
IS 1727

0.05
7.0

0.05
7.0

For the purpose of this test, wherever reference to cement has been made in IS 4032, it may be read as pulverized fuel ash.

Table 2 Physical Requirements

(Clauses 5.1 and 7.1)
Sl No.
(1)
i)
ii)
iii)
1)

Characteristic
(2)

Requirements
(3)

Fineness Specific surface in m2/kg by Blaines permeability method, Min

Particles retained on 45 micron IS sieve (wet sieving) in percent1), Max
Soundness by autoclave test Expansion of specimen in percent, Max

Optional test.

200
50
0.8

IS 3812 (Part 2) : 2013

case the pulverized fuel ash supplied is to be
beneficiated or segregated or processed, the tests shall
be carried out only after beneficiation, segregation or
processing as applicable.

quantity of pulverized fuel ash in each bag or

consignment shall be as per 11.2 unless mutually
agreed upon between the purchaser and the supplier.
11.2 Tolerance Requirements for the Quantity of
Pulverized Fuel Ash Packed in Bags

8.3 Independent Testing

11.2.1 The average of net quantity of pulverized fuel

ash packed in bags at the plant in a sample shall be
equal to or more than 15 kg, 30 kg, 300 kg, 600 kg as
applicable. The number of bags in a sample shall be as
given below:

8.3.1 If the purchaser or his representative requires

independent test, the samples shall be taken before or
immediately after delivery at the option of the
purchaser or his representative, and the tests shall be
carried out/arranged by the purchaser in accordance
with this standard. The supplier shall make available,
free of charge, the pulverized fuel ash required for
testing.

Batch Size
100 to 150
151 to 280
281 to 500
501 to 1 200
1 201 to 3 200
3 201 and over

8.3.2 After a representative sample has been drawn,

tests on the sample shall be carried out as expeditiously
as possible.
9 SAMPLING
9.1 Samples for Testing and by Whom to be Taken

Sample Size
20
32
50
80
125
200

The bags in a sample shall be selected at random (see

IS 4905).

A sample or samples for testing may be taken by the

purchaser or his representative, or by any person
appointed to superintend the work for purpose of which
the pulverized fuel ash is required or by the latters
representative.

11.2.2 The number of bags in a sample showing a minus

error greater than 2 percent of the specified net quantity
shall be not more than 5 percent of the bags in the
sample. Also the minus error in none of such bags in
the sample shall exceed 4 percent of the specified net
quantity of fly ash in the bag.

9.2 In addition to the requirements of 9.1, the methods

and procedure of sampling shall be in accordance with
IS 6491.

NOTE The matter given in 11.2.1 and 11.2.2 are extracts

based on the Standards of Weights and Measures (Packaged
Commodities) Rules, 1977 to which reference shall be made
for full details. Any modification made in these Rules and other
related Acts and Rules would apply automatically.

9.3 Facilities for Sampling and Identifying

The supplier shall afford every facility, and shall
provide all labour and materials for taking and packing
the samples for testing the pulverized fuel ash and for
subsequent identification of pulverized fuel ash
sampled.

11.2.3 In case of a wagon or truck load of 5 to 25 t, the

overall tolerance on net quantity of pulverized fuel ash
shall be 0 to + 0.5 percent.
12 MANUFACTURERS CERTIFICATE

10 STORAGE

The manufacturer (the beneficiating agency, if any,

otherwise source thermal power station) shall satisfy
himself that the pulverized fuel ash conforms to the
requirements of this standard, and if requested, shall
supply a certificate to this effect giving actual results.

Pulverized fuel ash may be stored in accordance with

the recommendations given in IS 4082 for storage of
fly ash. Additionally, during bulk storing, the
pulverized fuel ash should be suitably covered to avoid
getting air borne.

13 MARKING
11 DELIVERY

13.1 Each bag/consignment of pulverized fuel ash shall

be legibly and indelibly marked with the following
information:

11.1 Supplies of pulverized fuel ash may be made in

bulk in suitable quantities mutually agreed upon
between the purchaser and the supplier. Where so
required by the purchaser, the pulverized fuel ash may
be supplied in bags (jute, jute-laminated, multiple paper
or polyethylene lined) bearing the net quantity (may
be 15 kg, 30 kg, 300 kg, 600 kg as agreed to between
the purchaser and the supplier), suppliers name or
registered trade-mark, if any. The tolerance on the

a)

Indication of the source of producer (source

thermal power station);
b) Name of beneficiating agency, if any;
c) Name of packaging/supplying agency;
d) Type of pulverized fuel ash that is, siliceous
or calcareous, as applicable;
3

IS 3812 (Part 2) : 2013

1986 and the Rules and Regulations made thereunder.
The details of conditions under which a licence for the
use of the Standard Mark may be granted to
manufacturers or producers may be obtained from the
Bureau of Indian Standards.

e)

Form of Pulverized fuel ash that is, fly ash,

bottom ash, pond ash or mound ash, as
applicable;
f) Net quantity in kg;
g) Fineness, Min;
h) Batch/control unit number; and
j) Month and year of packing.

14 REJECTION
14.1 Pulverized fuel ash shall be rejected if it does not
comply with any of the requirements of this standard.

13.2 BIS Certification Marking

14.2 Pulverized fuel ash in bulk storage for more than

6 months or in bags for more than 3 months after
completion of tests, shall be retested before use and
shall be rejected, if it fails to conform to any
requirements of this standard.

The pulverized fuel ash may also be marked with the

Standard Mark.
13.2.1 The use of the Standard Mark is governed by
the provisions of the Bureau of Indian Standards Act,

ANNEX A
(Clause 2)
LIST OF REFERRED INDIAN STANDARDS
IS No.
1727 : 1967
4032 : 1985
4082 : 1996

Title
Methods of test for pozzolanic
materials (first revision)
Method of chemical analysis of
hydraulic cement (first revision)
Recommendations on stacking and

IS No.

4305 : 1967
4905 : 1968
6491 : 1972

Title
storage of construction materials and
components at site (second revision)
Glossary of terms relating to pozzolana
Methods for random sampling
Methods for sampling fly ash

ANNEX B
[Table 1, Sl No. (v)]
METHOD FOR DETERMINATION OF AVAILABLE ALKALIES
B-1 PROCEDURE

lumps is obtained (see Note). Add sufficient water to

make the total volume 200 ml. Let it stand for 1 h at
room temperature with frequent stirring. Filter through
a medium-textured filter paper onto a 500 ml
volumetric flask. Wash thoroughly with hot water
(eight to ten times).

B-1.1 Weigh 5.0 g of the sample and 2.0 g of hydrated

lime on a piece of weighing paper, carefully mix using
a metal spatula, and transfer to a small plastic vial of
approximately 25 ml capacity. Add 10.0 ml of water
to this mixture, seal the vial by securing the cap or lid
to the vital with tape (see Note), blend by shaking until
the mixture is uniform, and store at 38 + 2C.
NOTE To ensure that moisture loss from the paste does not
occur, place the sealed vial in a sealable container (such as a
small sample or mason jar), add sufficient water to cover the
bottom of the container, and seal.

NOTE At times it may be necessary to break the vial and

peel off the plastic from the solid cake. In such cases, care
should be exercized to avoid the loss of material and to remove
all solid material from the fragments of the vial. If the cake is
too hard to break up and grind in the casserole, a mortar should
be used.

B-1.2 Open the vial at the age of 28 days and transfer

the contents to a 250 ml casserole. Break up and grind
the cake with a pestle, adding a small amount of water,
if necessary, so that a uniform slurry containing no

B-1.3 Neutralize the filtrate with dilute HCl (1+3),

using 1 to 2 drops of phenolphthalein solution as an
indicator. Add exactly 5 ml of dilute HCl (1+3) in
excess. Cool the solution to room temperature and fill
4

IS 3812 (Part 2) : 2013

approximates the amount of calcium dissolved in the test
solution.

the flask to the mark with distilled water. Determine

the amount of sodium and potassium oxides in the
solution using the flame photometric procedure,
described in IS 4032, except that the standard solutions
shall be made up, to contain 8 ml of calcium chloride
(CaCl2) stock solution per litre of standard solution,
and the solution as prepared shall be used in place of
the solution of cement.

B-2 CALCULATION AND REPORTING OF

RESULTS
Calculate the results as percent by mass of the original
sample material. Report as equivalent percentage of
sodium oxide (Na2O), calculated as follows:
Equivalent Na2O, percent = Na 2 O, percent +
0.658 K2O, percent

NOTE The standard solutions made up with 8 ml of calcium

chloride (CaCl 2) stock solution contain the equivalent of
504 ppm of CaO. Tests have shown that this amount closely

ANNEX C
(Clause 6.2)
METHOD OF TEST FOR DETERMINATION OF MOISTURE CONTENT
C-2 CALCULATION AND REPORTING OF
RESULTS

C-1 PROCEDURE
Dry the clean empty Petri dish (approximately 100
mm diameter) at a temperature of 105 C to 110C
and weigh it, after cooling in a desiccator. Spread
uniformly, not less than 2.5 0.5g, fly ash sample, as
received basis, in this Petri dish and weigh. Heat this
uncovered Petri dish with fly ash in a drying oven at a
temperature 105 C to 110C for 1 h. Cool the Petri
dish with heated fly ash in a desiccator and weigh.
Repeat the process until there is no further loss in
mass.

Calculate the percentage of moisture to the nearest

0.1 percent as follows:
Moisture content, percent =

x
100
y

where
x
y

= loss in mass of fly ash during drying; and

= mass of fly ash taken, as received basis.

ANNEX D
(Foreword)
COMMITTEE COMPOSITION
Cement and Concrete Sectional Committee, CED 2
Organization

Representative(s)

Delhi Tourism and Transportation Development Corporation Ltd,

New Delhi

SHRI JOSE KURIAN (Chairman)

ACC Ltd, Mumbai

SHRI S. A. KHADILKAR
SHRI SHARAD KUMAR SHRIVASTAVA (Alternate)

Ambuja Cements Limited, Mumbai

SHRI C. M. DORDI
DR A. N. VYASA RAO (Alternate)

Association of Consulting Civil Engineers (India), Bangalore

SHRI AVINASH D. SHIRODE

SHRI K. K. MEGHASHYAM (Alternate)

Atomic Energy Regulatory Board, Mumbai

SHRI L. R. BISHNOI
SHRI SAURAV ACHARYA (Alternate)

Builders Association of India, Mumbai

DR NARENDRA D. PATEL

IS 3812 (Part 2) : 2013

Organization

Representative(s)

Building Materials and Technology Promotion Council, New Delhi

SHRI J. K. PRASAD
SHRI C. N. JHA (Alternate)

Cement Corporation of India Limited, New Delhi

SHRI R. R. DESHPANDE
SHRI M. K. AGARWAL (Alternate)

Cement Manufacturers Association, Noida

SHRI N. A. VISWANATHAN
DR S. K. HANDOO (Alternate)

Central Board of Irrigation and Power, New Delhi

SECRETARY
DIRECTOR (CIVIL) (Alternate)

Central Building Research Institute (CSIR), Roorkee

DR B. K. RAO
DR S. K. AGARWAL (Alternate)

Central Public Works Department, New Delhi

SHRI A. K. GARG
SHRI MANU AMITABH (Alternate)

Central Road Research Institute (CSIR), New Delhi

DR RAKESH KUMAR
DR RENU MATHUR (Alternate)

Central Soil and Materials Research Station, New Delhi

SHRI MURARI RATNAM

SHRI N. SIVAKUMAR (Alternate)

Central Water Commission, New Delhi

DIRECTOR (CMDD) (N&W)

DEPUTY DIRECTOR (CMDD) (NW&S) (Alternate)

Conmat Technolgies Pvt Ltd, Kolkata

DR A. K. CHATTERJEE

Construction Chemicals Manufacturers Association, Mumbai

SHRI SAMIR SURLAKER

SHRI UPEN PATEL (Alternate)

Construction Industry Development Council, New Delhi

SHRI P. R. SWARUP
SHRI RAVI JAIN (Alternate)

Delhi Development Authority, New Delhi

CHIEF ENGINEER (QAC)

DIRECTOR (MATERIAL MANAGEMENT) (Alternate)

Engineers India Limited, New Delhi

SHRI VINAY KUMAR

SHRI A. K. MISHRA (Alternate)

Fly Ash Unit, Department of Science and Technology, New Delhi

DR VIMAL KUMAR

Gammon India Limited, Mumbai

SHRI VENKATARAMANA N. HEGGADE

SHRI MANISH MOKAL (Alternate)

Grasim Industries Limited, Mumbai

SHRI A. K. JAIN
DR S. P. PANDEY (Alternate)

Hindustan Construction Company Ltd, Mumbai

DR CHETAN HAAZAREE
SHRI MANOHAR CHERALA (Alternate)

Housing and Urban Development Corporation Limited, New Delhi

SHRI DEEPAK BANSAL

Indian Association of Structural Engineers, New Delhi

PROF MAHESH TANDON

SHRI GANESH JUNEJA (Alternate)

Indian Bureau of Mines, Nagpur

SHRI S. S. DAS
SHRI MEERUL HASAN (Alternate)

Indian Concrete Institute, Chennai

SHRI VIVEK NAIK

SECRETARY GENERAL (Alternate)

Indian Institute of Technology Kanpur, Kanpur

DR SUDHIR MISRA
DR SUDIB K. MISHRA (Alternate)

Indian Institute of Technology Madras, Chennai

PROF DEVDAS MENON

DR MANU SANTHANAM (Alternate)

Indian Institute of Technology Roorkee, Roorkee

PROF V. K. GUPTA
DR BHUPINDER SINGH (Alternate)

Indian Roads Congress, New Delhi

SECRETARY GENERAL
DIRECTOR (Alternate)

Institute for Solid Waste Research & Ecological Balance,

Visakhapatnam

DR N. BHANUMATHIDAS
SHRI N. KALIDAS (Alternate)

IS 3812 (Part 2) : 2013

Organization

Representative(s)

Jai Prakash Associates Ltd, New Delhi

SHRI M. K. GHOSH

Lafarge India Pvt Ltd, Mumbai

MS MADHUMITA BASU
SHRI SANJAY JAIN (Alternate)

Madras Cements Ltd, Chennai

SHRI BALAJI K. MOORTHY

SHRI ANIL KUMAR PILLAI (Alternate)

Military Engineer Services, Engineer-in-Chiefs Branch, Army

Headquarter, New Delhi

MAJ -GEN N. R. K. BABU

SHRI S. K. JAIN (Alternate)

Ministry of Road Transport & Highways, New Delhi

SHRI A. N. DHODAPKAR
SHRI S. K. PURI (Alternate)

National Council for Cement and Building Materials, Ballabgarh

SHRI V. V. ARORA
DR M. M. ALI (Alternate)

National Test House, Kolkata

SHRI B. R. MEENA
SHRIMATI S. A. KAUSHIL (Alternate)

Nuclear Power Corporation of India Ltd, Mumbai

SHRI U. S. P. VERMA
SHRI ARVIND SHRIVASTAVA (Alternate)

OCL India Limited, New Delhi

DR S. C. AHLUWALIA

Public Works Department, Government of Tamil Nadu, Chennai

SUPERINTENDING ENGINEER
EXECUTIVE ENGINEER (Alternate)

Research, Design & Standards Organization (Ministry of Railways),

Lucknow

SHRI R. M. SHARMA
SHRI V. K. YADAVA (Alternate)

Sanghi Industries Limited, Sanghi Nagar

SHRI D. B. N. RAO
DR H. K. PATNAIK (Alternate)

Structural Engineering Research Centre (CSIR), Chennai

DR K. RAMANJANEYULU
SHRI P. SRINIVASAN (Alternate)

The India Cements Limited, Chennai

DR D. VENKATESWARAN
SHRI S. GOPINATH (Alternate)

The Indian Hume Pipe Company Limited, Mumbai

SHRI P. R. BHAT
SHRI S. J. SHAH (Alternate)

The Institution of Engineers (India), Kolkata

DR H. C. VISVESVARAYA
SHRI S. H. JAIN (Alternate)

The National Institute of Engineering, Mysore

DR N. SURESH
SHRI H. N. RAMATHIRTHA (Alternate)

Ultra Tech Cement Ltd, Mumbai

DR SUBRATO CHOWDHURY
SHRI BISWAJIT DHAR (Alternate)

Voluntary Organization in Interest of Consumer Education,

New Delhi

SHRI M. A. U. KHAN
SHRI H. WADHWA (Alternate)

In personal capacity (36, Old Sneh Nagar, Wardha Road, Nagpur)

SHRI L. K. JAIN

In personal capacity (EA-92, Maya Enclave, Hari Nagar, New Delhi)

SHRI R. C. WASON

In personal capacity (E-1, 402, White House Apartments, R.T. Nagar,

Bangalore)

SHRI S. A. REDDI

BIS Directorate General

SHRI A. K. SAINI, Scientist G and Head (Civ Engg)

[Representing Director General (Ex-officio)]

Member Secretaries
SHRI SANJAY PANT
Scientist E & Director (Civ Engg), BIS
SHRI S. ARUN KUMAR
Scientist C (Civ Engg), BIS

IS 3812 (Part 2) : 2013

Cement, Pozzolana and Cement Additives Subcommittee, CED 2 : 1
Organization

Representative(s)

In personal capacity (E-1, 402, White House Wardha Road,

Nagpur)

SHRI S. A. REDDI (Convener)

ACC Ltd, Mumbai

SHRI S. A. KHADILKAR
SHRI SHARAD KUMAR SHRIVASTAVA (Alternate)

AIMIL Ltd, New Delhi

DR V. M. SHARMA
SHRI AMAN KHULLAR (Alternate)

All India Mini Cement Manufacturers Association, Hyderabad

SHRI S.R.B. RAMESH CHANDRA

SHRI S. SRIKANTH REDDY (Alternate)

Ambuja Cements Ltd, Ahmedabad

SHRI C. M. DORDI
DR A. N. VYASA RAO (Alternate)

Atomic Energy Regulatory Board, Mumbai

SHRI L. R. BISHNOI
SHRI SAURAV ACHARYA (Alternate)

Building Materials and Technology Promotion Council, New Delhi

SHRI J. K. PRASAD
SHRI C. N. JHA (Alternate)

Cement Corporation of India Ltd, New Delhi

SHRI M. K. AGARWAL
SHRIMATI SARASWATHI DEVI (Alternate)

Cement Manufactuters Association, Noida

SHRI SUBRATO CHOWDHURY

DR K. C. NARANG (Alternate)

Central Building Research Institute (CSIR), Roorkee

DR B. K. RAO
DR S. K. AGARWAL (Alternate)

Central Electricity Authority, New Delhi

SHRI Y. K. SHARMA
SHRI MOHAN KUMAR (Alternate)

Central Pollution Control Board, Delhi

SHRI J. S. KAMYOTRA
SHRI P. K. GUPTA (Alternate)

Central Public Works Department, New Delhi

SHRI A. K. GARG
SHRI MANU AMITABH (Alternate)

Central Road Research Institute (CSIR), New Delhi

DR A. K. MISRA
SHRI J. B. SENGUPTA (Alternate)

Central Soil and Materials Research Station, New Delhi

SHRI MURARI RATNAM

SHRI N. SIVAKUMAR (Alternate)

Central Water Commission, New Delhi

DIRECTOR, CMDD (N&W)

DEPUTY DIRECTOR, CMDD (NW&S) (Alternate)

Dalmia Cement (Bharat) Limited, New Delhi

DR K. C. NARANG
SHRI C. S. SHARMA (Alternate)

Fly Ash Unit, Ministry of Science and Technology, New Delhi

DR VIMAL KUMAR

Gammon India Limited, Mumbai

SHRI AVINASH Y. MAHENDRAKAR

SHRI MANISH MOKAL (Alternate)

Grasim Industries Limited, Mumbai

SHRI A. K. JAIN
DR S. P. PANDE (Alternate)

Gujarat Engineering Research Institute, Vadodara

SHRI B. M. RAO
SHRI K. L. DAVE (Alternate)

Hindustan Construction Company Limited, Mumbai

SHRI S. K. DHARMADHIKARI
SHRI K. R. VISWANATH (Alternate)

Indian Concrete Institute, Chennai

DR ANANT M. PANDE
SECRETARY GENERAL (Alternate)

Indorama Cement Limited, Mumbai

SHRI SANJEEV PARASRAMPURIA

BRIG. R. V. SEETARAMAIAH (Alternate)

Institute for Solid Waste Research & Ecological Balance

(INSWAREB), Visakhapatnam

DR N. BHANUMATHIDAS
SHRI N. KALIDAS (Alternate)

Lafarge India Limited, Mumbai

SHRI M. K. CHAUDHARY
SHRI ANIL PARASHAR (Alternate)

Madras Cements Ltd, Chennai

SHRI BALAJI K. MOORTHY

SHRI ANIL KUMAR PILLAI (Alternate)

IS 3812 (Part 2) : 2013

Organization

Representative(s)

Maharashtra Engineering Research Institute, Nasik

SCIENTIFIC RESEARCH OFFICER

ASSISTANT RESEARCH OFFICER (Alternate)

Military Engineer Services, Engineer-in-Chief Branch, Army

Headquarter, New Delhi

BRIG RAJESH TYAGI

COL MUKESH CHOPRA (Alternate)

Ministry of Commerce & Industry, New Delhi

SHRI P. K. JAIN
SHRI SHAISH KUMAR (Alternate)

Ministry of Shipping, Road Transport & Highways, New Delhi

SHRI A. K. SHARMA
SHRI HARICHAND ARORA (Alternate)

National Council of Cement and Building Materials, Ballabgarh

DR M. M. ALI
DR S. HARSH (Alternate)

National Hydrolectric Power Corporation Limited, Faridabad

SHRI A. K. JAIN

National Test House, Kolkata

SHRI D. V. S. PRASAD
DR MOITRAYEE DEVI (Alternate)

NTPC Ltd, New Delhi

SHRI A. VIJAYARAMAN
SHRI MASOOM ALI (Alternate)

OCL India Limited, New Delhi

DR S. C. AHLUWALIA

Orkla India Pvt Ltd, Navi Mumbai

SHRI KSHMENDRANATH P.
SHRI PRASHANT JHA (Alternate)

Public Works Department, Government of Tamil Nadu, Chennai

JOINT CHIEF ENGINEER (IRRIGATION)

EXECUTIVE ENGINEER (Alternate)

Ready Mixed Concrete Manufacturers Association, Mumbai

SHRI VIJAYKUMAR R. KULKARNI

Research, Design and Standards Organization (Ministry of Railways),

Lucknow

DEPUTY DIRECTOR (B&F)

ASSISTANT DESIGN ENGINEER (B&F) (Alternate)

Tamil Nadu Minerals Limited, Chennai

SHRI K. SUMANTH BABU

Tata Steel Ltd, Jamshedpur

SHRI INDRANIL CHAKRABARTI

Ultra Tech Cement Ltd, Mumbai

SHRI SUBRATO CHOWDHURY

SHRI BISWAJIT DHAR (Alternate)

In personal capacity (II/69, Presidents Estate, New Delhi)

SHRI K. H. BABU

Panel for Revision of Cement Standards, CED 2 : 1/P1

In personal capacity (II/69, Presidents Estate, New Delhi)

SHRI K. H. BABU (Convener)

AIMIL Ltd, New Delhi

DR V. M. SHARMA
SHRI AMAN KHULLAR (Alternate)

Cement Manufacturers Association, Noida

DR D. GHOSH
SHRI SANJAY JAIN (Alternate)

Central Building Research Institute (CSIR), Roorkee

DR S. K. AGARWAL
SHRI NEERAJ JAIN (Alternate)

Central Public Works Department, New Delhi

SHRI A. K. GARG
SHRI MANU AMITABH (Alternate)

Military Engineer Services, Engineer-in-Chiefs Branch, Army

Headquarter, New Delhi

SHRI P. K. JAIN
LT-COL PRADEEP TIWARI (Alternate)

National Council for Cement and Building Materials, Ballabgarh

DR S. HARSH
DR U. K. MANDAL (Alternate)

Ready Mixed Concrete Manufacturers Association, Mumbai

SHRI VIJAYKUMAR R. KULKARNI

SHRI S. D. GOVILKAR (Alternate)

(Continued from second cover)

This standard covers the extraction and the physical and chemical requirements of pulverized fuel ash for use as
pozzolana for use as admixture in cement mortar and concrete. The other part being Part 1 For use as Pozzolana
in cement, cement mortar and concrete.
This revision has been brought out to incorporate modifications found necessary in light of the use of last version
of the standard and various feedback received thereon. The significant modifications in this revision include:
a) Definition of admixture has been added.
b) Method for determination of available alkalies has been added.
c) For estimation of chloride content, reference has been given to IS 4032 : 1985 Method of chemical
analysis of hydraulic cement (first revision) which gives volumetric method and also gives enabling
provision for using rapid methods such as colorimetric analysis as per IS 12423 : 1988 Method for
colorimetric analysis of hydraulic cement.
d) Requirement of loss of ignition has been revised from 5.0 percent to 7.0 percent in view of the type of
use prescribed as per this standard.
e) Method for determination of moisture content has been added.
f) Provisions on manufacturers certificate and marking have been modified to reflect the beneficiating
agency, when involved.
g) References to the cross-referred Indian Standards have been updated.
This standard contains Sl No. (ii) of Table 2 which gives optional test and clause 11.1 which calls for agreement
between the purchaser and the supplier.
The composition of the Technical Committee responsible for the formulation of this standard is given in Annex D.
For the purpose of deciding whether a particular requirement of this standard is complied with, the final value,
observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2 : 1960
Rules for rounding off numerical values (revised). The number of significant places retained in the rounded off
value should be the same as that of the specified value in this standard.

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote
harmonious development of the activities of standardization, marking and quality certification of goods
and attending to connected matters in the country.
Copyright
BIS has the copyright of all its publications. No part of these publications may be reproduced in any form
without the prior permission in writing of BIS. This does not preclude the free use, in the course of
implementing the standard, of necessary details, such as symbols and sizes, type or grade designations.
Enquiries relating to copyright be addressed to the Director (Publications), BIS.
Review of Indian Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards
should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of
BIS Catalogue and Standards : Monthly Additions.
This Indian Standard has been developed from Doc No.: CED 2 (7698).

Amendments Issued Since Publication

Amend No.

Date of Issue

Text Affected

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