भारतीय मानक IS 13630 (Part 14) : 2019

Indian Standard

सिरैमिक टाइलें — परिक्षण पद्धतियां,

नमूने लेने तथा स्वीकार्यता का आधार
भाग 14 क्षतिपूर्ति के गुणांक को मापन द्वारा
सघं ात प्रतिरोधिता ज्ञात करना
( पहला पनु रीक्षण )

Ceramic Tiles — Methods of Test,

Sampling and Basis for Acceptance
Part 14 Determination of Impact Resistance by
Measurement of Coefficient of Restitution
( First Revision )

ICS 91.100.23

© BIS 2019

भारतीय मानक ब्रयू ो

B U R E A U O F I N D I A N S TA N D A R D S
मानक भवन, 9 बहादरु शाह ज़फर मार्ग, नई िदल्ली – 110002
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI-110002
         www.bis.gov.in  
www.standardsbis.in

May 2019  Price Group 4

Flooring, Wall Finishing and Roofing Sectional Committee, CED 05

FOREWORD
This Indian Standard (Part 14) (First Revision) was adopted by the Bureau of Indian Standards, after the draft
finalized by the Flooring, Wall Finishing and Roofing Sectional Committee had been approved by the Civil
Engineering Division Council.
This standard (Part 14) was first published in 2006. This first revision incorporates the experience gained with the
use of this standard and brings the standard in line with the latest developments in this field.
This Indian Standard is published in several parts. The other parts in this series are:
Part 1 Determination of dimensions and surface quality
Part 2 Determination of water absorption and bulk density
Part 3 Determination of moisture expansion using boiling water
Part 4 Determination of linear thermal expansion
Part 5 Determination of resistance to thermal shock
Part 6 Determination of modulus of rupture and breaking strength
Part 7 Determination of stain and chemical resistance of unglazed tiles
Part 8 Determination of stain and chemical resistance of glazed tiles
Part 9 Determination of crazing resistance of glazed tiles
Part 10 Determination of frost resistance
Part 11 Determination of resistance to surface abrasion of glazed tiles
Part 12 Determination of resistance to deep abrasion of unglazed tiles
Part 13 Determination of scratch hardness of surface according to Mohs’ scale
Part 15 Sampling and basis for acceptance
Part 16 Determinations of lead and cadmium given off by glazed tiles
In the formulation of this standard considerable assistance has been derived from the ISO 10545-5 : 1996 ‘Ceramic
tiles — Part 5: Determination of impact resistance by measurement of coefficient of restitution’.
The composition of the Committee responsible for the formulation of this standard is given in Annex A.
In reporting the results of a test or analysis made in accordance with this standard, if the final value, observed or
calculated, is to be rounded off, it shall be done accordance with IS 2 : 1960 ‘Rules for rounding off numerical
values ( revised  )’.
 IS 13630 (Part 14) : 2019

Indian Standard
CERAMIC TILES — METHODS OF TEST,
SAMPLING AND BASIS FOR ACCEPTANCE
PART 14 DETERMINATION OF IMPACT RESISTANCE
BY MEASUREMENT OF COEFFICIENT OF RESTITUTION
( First Revision )

1 SCOPE 4.3 Concrete Blocks

This standard (Part 14) defines a method of test for 4.3.1 The dense concrete blocks shall be of approximate
determining the impact resistance of ceramic tiles by dimensions 75 mm × 75 mm × 50 mm and prepared
measuring the coefficient of restitution. in moulds of this size or alternatively cut from large
For the purpose of this Indian standard the coefficient concrete slabs.
of restitution (e) between two impacting bodies is
4.3.2 The following method describes the preparation
defined as the relative velocity of departure divided by
of dense concrete blocks made from gravel/sand, but
the relative velocity of approach.
other aggregates may be used and then the surface
2 PRINCIPLE water absorption test may not be appropriate.

Determination of coefficient of restitution by dropping 4.3.3 Concrete block or slabs may be made by adding
a steel ball from a fixed height on to the test specimen one part by mass of Portland cement to 4.5 to 5.5 parts
and measuring the height of rebound. by mass of aggregate. The aggregate shall be gravel
sand of 0 to 8 mm particle size with a continuous
3 APPARATUS grading curve between the limits A and B in Fig. 2.
The total fines of particle size, below 0.125 mm in the
3.1 Chrome Steel Ball, of 19 ± 0.05 mm diameter. mix of concrete, including Portland cement, should be
about 500 kg/m3
3.2 Ball Release Apparatus ― Consisting of a heavy
steel base on leveling screws with a vertical steel bar to 4.3.4 The water/cement ratio shall be 0.5. Thoroughly
which is attached an electromagnet, a guide tube and mix the constituents in a mechanical mixer and trowel
test until support (see Fig. 1) . into moulds of the required size. Compact for 90 s
at 50 Hz on a vibrating table.
The test unit is clamped firmly in a position so that
the dropping steel ball impinges on the center of the 4.3.5 Condition the slabs for 48 h at 23 ± 2°C and
horizontal tile surface. A clamping device is shown in 50 ± 5 percent relative humidity before removing them
Fig. 1 but any suitable system may be used. from the moulds. Thoroughly rinse off any mould
release agent. Throughout the remaining conditioning,
3.3 Electronic Timing Device ― Which, by
the slabs shall be held vertically leaving gaps between
means of a microphone, measures the time interval
them. Immerse in water at 20 ± 2°C for 6 days, then in
between the first and second impacts when the ball
air at 23 ± 2°C and 50 ± 5 percent relative humidity for
is dropped on to the test specimen. This apparatus is
21 days. The assembly face of the concrete shall have
optional.
an absorption of surface water after 4 h in the range
of 0.5 cm3 to 1.5 cm3 when three specimens are tested
4 PREPARATION FOR THE ABOVE TEST in accordance with the method shown in Annex A and
Fig. 3.
4.1 Number of Test Specimens
A minimum of five pieces in dimensions 75 mm × 4.3.6 Blocks subsequently cut from concrete slabs
75 mm cut from five tiles. Tiles with facial dimensions by wet methods require a minimum of 24 h drying at
less than 75 mm may be used. 23 ± 2°C and 50 ± 5 percent relative humidity before
assembly in test units.
4.2 Brief Description of Test Units
4.4 Epoxide Resin Adhesive
The test units consist of test specimens fixed to mature
concrete blocks by means of rigid epoxide resin The adhesive shall not contain ingredients which
adhesive. increase flexibility. A suitable adhesive consist of

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IS 13630 (Part 14) : 2019

Fig. 1 Ball Release Apparatus

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 IS 13630 (Part 14) : 2019

Fig. 2 Grading Curves for Gravel Sand of 8 mm Maximum Particle Size

All dimensions in millimetres.

Fig. 3 Apparatus for Measuring the Surface Water Absorption of
Concrete Blocks or Slabs

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IS 13630 (Part 14) : 2019

2 parts by mass of an epoxide resin which is a reaction be ignored. Edge chipping of surface relief should be
product of epichlorhydrin and diphenylol propane noted but may be ignored in classifying tiles.
and one part by mass of a curing agent which is an
activated aromatic amine. Pure silica filler of average 5.6 Repeat the whole procedure for the other test
particle size 5.5 µm, measured by the Coulter counter units.
or other similar methods, is thoroughly mixed with the
other constituents in just sufficient proportion to form a 6 EXPRESSION OF RESULTS
mixture that does not flow.
For a ball impacting a horizontal static surface the
coefficient of restitution is given by:
4.5 Assembly of Test Units
v
Coefficient of restitution (e) =
4.5.1 Spread about 2 mm thickness of epoxide resin u
adhesive over the upper surface of a mature concrete
block in a uniform layer. Place three 1.5 mm diameter where
steel or plastics spacer pegs in the middle of three
v = velocity of departure (rebound), and
of the sides so that a sufficient amount of each peg
projects to allow it to be removed later. Press a test u = velocity of approach.
specimen, with the proper face upwards, into the If,
adhesive and scrape off excess adhesive from the h1 = height of drop, in cm; and
sides before gently removing the three spacer pegs.
Allow to stand in a temperature of 23 ± 2°C and at h2 = height of rebound, in cm.
50 ± 5 percent relative humidity for 3 days prior to Then,
testing. v2 = 2 g h2 and u2 = 2 gh1
h
Hence, e2 = 2
4.5.2 If tiles of less than 75 mm × 75 mm facial h1
dimensions are to be tested place one tile so that its If the height of rebound is determined by allowing the
center coincides with the center of the surface of the ball to bounce twice and measuring the time interval
block. Use cut piece of the tile to complete the 75 mm between bounces the equation of motion is:
× 75 mm area.
s = ut + ½ at2
5 PROCEDURE where
s = height of rebound, in cm;
5.1 Adjust the ball-release apparatus by means of the
leveling screws so that steel bar is vertical. Place the test u = velocity at peak rebound height;
unit under the electromagnet so that a steel ball released = zero;
from the electromagnet will fall onto the centre of a test a = acceleration due to gravity;
unit clamped in position.
= g (= 981 cm/s2); and
5.2 Place a test unit in the support with the proper face t = T/2, where T = time interval, in s.
of the test specimen upwards and horizontal. Release
the steel ball from a height of 1 m above the proper Hence,
face of the test unit and allow it to bounce. Measure the s = 122.6 ( T 2) = h2.
height of rebound by a suitable detector and calculate
the coefficient of restitution (e).
7 CALIBRATION
5.3 Alternatively allow the ball to bounce twice, note
Assemble five test units (see 4.5) using 8 ± 0.5 mm
the time between bounces to the nearest millisecond
thick unglazed B1a tiles (water absorption ≤ 0.08) with
and calculate the height of rebound and hence the
plane surfaces. Test in accordance with 5. The average
coefficient of restitution.
height of rebound (h2) shall be 72.5 ± 1.5) cm so that
5.4 Any suitable means of measuring the height of coefficient of restitution is 0.85 ± 0.01.
rebound or the time interval between the two impacts
may be used. 8 REQUIREMENT FOR PASSING
5.5 Examine the surface of the tile for signs of The normal requirement for light duty installations is
indentation or cracking. All minor Hertzian cracks a coefficient of restitution of 0.55 and for heavier duty
which cannot be seen from a distance of 1m with the applications; minimum coefficient of restitution of 0.90
naked eye or with spectacles if usually worn, should is required.

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 IS 13630 (Part 14) : 2019

9 TEST REPORT c) Coefficient of restitution of each of the five test

specimens,
a) Reference to the Indian Standard,
d) Average coefficient of restitution, and
b) Description of the tiles,
e) Any indentation or cracking of test specimens.

ANNEX A
( Clause 4.3.5 )
DETERMINATION OF THE WATER ABSORPTION
AT THE SURFACE OF CONCRETE BLOCKS OR SLABS

A-1 PROCEDURE A-1.3 Record the water level after 1, 2, 3 and 4 h

and obtain a curve of surface water absorption versus
A-1.1 Attach a graduated glass cylinder (see Fig. 3) to the time.
concrete surface by means of a suitable sealant around
the perimeter of the base. Allow the sealant to cure. A-1.4 Test the surface in 3 specimens and obtain an
average surface water absorption after 4 h.
A-1.2 Fill the graduated cylinder to the zero mark with
de ionized or distilled water.

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IS 13630 (Part 14) : 2019

ANNEX B
( Foreword )
COMMITTEE COMPOSITION
Flooring, Wall Finishing and Roofing Sectional Committee, CED 05
Organization Representative(s)
In Personal Capacity (L/109, Sarita Vihar, New Delhi) Shri Ashok Khurana (Chairman)
Ardex Endura India Pvt Ltd, Bengaluru Shri K. P. Paulson
Shri Gopinath Krishnan (Alternate)
Building Materials & Technology Promotion Council, Shri S. K. Gupta
New Delhi Shri Pankaj Gupta (Alternate)
Carborundum Universal Limited, Chennai Shri R. Rajagopalan
Dr N. Ramasubramanian (Alternate)
Central Public Works Department, New Delhi Shri Rajesh Kumar Kaushal
Shri Arun Kumar Tyagi (Alternate)
CSIR − Central Building Research Institute, Roorkee Shri S. K. Singh
Shri Achal Kumar Mittal (Alternate)
CSIR − Central Glass & Ceramic Research Institute, Dr Satyendra Nath Misra
Kolkata
CSIR − Central Road Research Institute, New Delhi Dr Rakesh Kumar
Choksi Laboratories Limited, Indore Shri R. D. Mathur
Shri Ramesh Basappa (Alternate)
Construction Chemicals Manufacturers Association, Shri Upen Patel
Navi Mumbai Shri Samir Surlaker (Alternate)
Construction Industry Development Council, Shri P. R. Swarup
New Delhi Shri Ravi Jain (Alternate)
Delhi Development Authority, New Delhi Chief Engineer (Dwk)
Superintending Engineer (P) (Alternate)
Directorate General of Border Roads, New Delhi Col Indra Kumar Jaggi
Engineers India Limited, New Delhi Shri J. K. Bhagchandani
Shri Akhilesh Maurya (Alternate)
Gyan Construction Company, Mumbai Representative
H. R. Johnson (India) Limited, Dewas Shri Arun Rao
Indian Council of Ceramic Tiles & Sanitaryware, Shri Arun Rao
New Delhi Shri P. K. Sharma (Alternate)
Institution of Engineers (India), New Delhi Shri K. K. Kapila
Lloyd Insulation (India) Pvt Limited, New Delhi Shri Mohit Khanna
Shri K. K. Mitra (Alternate)
Mapie Construction Products India Pvt Ltd, Dr G. S. Ravi Shankar
Bengaluru Shri Abhijit Dutta (Alternate)
Military Engineer Services, Engineer-in-Chief’s Shrimati Mala Mohan
Branch, New Delhi Shrimati Namrata Kohli (Alternate)
Modern Tiles & Marble, New Delhi Shri Subhash Kapoor
Shri Kameswar Rau (Alternate)
Morbi Dhuva Glaze Tiles Association, Morbi Shri Nilesh Jetparia
Shri Jeram Madhav Kavar (Alternate)
Municipal Corporation of Greater Mumbai, Mumbai Representative

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 IS 13630 (Part 14) : 2019

Organization Representative(s)
MYK Laticrete India, Hyderabad Dr P. Arjunan
Shri N. Radhakanth (Alternate)
National Council for Cement and Building Materials, Dr S. K. Breja
Ballabgarh
National Highways Authority of India, New Delhi Shri S. C. Jindal
Shri R. P. Khandelwal (Alternate)
National Test House, Kolkata Shri D. V. S. Prasad
Shri Aloke Dev (Alternate)
National Tiles Corporation, Panchkula Shri Prem Chand Gupta
Shri S. R. Garg (Alternate)
New Delhi Municipal Corporation, New Delhi Representative
Premier Polyfilm Limited, Ghaziabad Dr Sanjeev K. Verma
Shri R. K. Narad (Alternate)
Research, Designs and Standards Organization, Executive Director (Works)
Ministry of Railways, Lucknow Shri Ashutosh Kumar (Alternate)
Responsive Industries Limited, Mumbai Shri Rishabh Agarwal
Shri Abhishek Agarwal (Alternate)
Shriram Institute of Industrial Research, New Delhi Dr P. K. Kaicher
Dr Laxmi Rawat (Alternate)
Somany Ceramic Ltd, Bahadurgarh Shri G. G. Trivedi
Dr Ashutosh Goel (Alternate)
Super Tiles and Marble Private Limited, Mumbai Shri Ashok Rajpurohit
Shri Sudhakar Modi (Alternate)
Ultratech Cement Limited, Mumbai Shri B. Kumar
Xebec Design and Facilities Private Limited, Shri Deepak Gahlowt
New Delhi Shri Samir Banerji (Alternate)
BIS Directorate General Shri Sanjay Pant, Scientist ‘F’ and Head (Civil Engineering)
[ Representing Director General (Ex-officio) ]

Member Secretary
Shri Srikanth Yajjala
Scientist ‘C’ (Civil Engineering), BIS

and

Shri Milind Gupta

Scientist ‘C’ (Civil Engineering), BIS

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This Indian Standard has been developed from Doc No.: CED 05 (10845).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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