lssue
METHOD sTATEMENT 1
TEST METHOD FOR DETERMINATION OF WATER (MOISTURE) Rev. #
CONTENT OF SOIL AND ROCK 01
PURPOSE
1.0
Thic document covers the method for determination of Water (Moisture) content followed by
1.1
theCivil8Geo tech DivisionSoilecdlonofthe company for performing and controlling the
evaluation of sOil used for constructior
quality testing and
SCOPE
2.0
This test method describes
the
metnod tor determination of Water (moisture) content of soil,
2.1 rock and similar material
wnere the reduction in mass by drying due to loss of water.
DEFINITIONS
3.0
Water content by mass (of a material)ne ratio of the mass of water contain in the pore
3.1 Spaces of soil or rock
material, to
tne solla mass or particles, in that materials, expressed as
of 110 #5°C IS used to determine these masses.
Dercentage. A standard temperature
Constant dry mass The state that a water content specimen has attained when further
3.2 loss in for method A or
cause less than 1% or 0.17% additional mass
heating causes or would
B respectively
4.0 APPARATUS
capable of maintaining a minimum temperature of 110A5°C throughout the
4.1 Drying Oven
drying chamber
Balances, readability of 0.1 and 1g
|4.2
4.3 Suitable containers.
etc.
4.4 Miscellaneous, container handling gloves, scoops, spatulas
5.0 PROCEDURE
Two methods are described, as method A and method B. methods differ in the significant
5.1
digits reported and the size of the specimen (mass) required.
Method A: The water content by mass is recorded to nearest 1%
Method B: The water content by mass is recorded to nearest 0.1%
Minimum requirement for mass of test specimen,and balance readability
Method B Water content
Maximum ParticleSize100% Method A Water content recorded recorded to +0.1%
passing to t1%
Sieve size UIt. Sieve size Specimen mass | Balance Specimen mass Balance
readablitylg readabilityYg)|
75.0 3in. 50kg 10 5kg
37.5 1%in._ 10kg_ 0 1Kg
| 19.0 in 2.5kg 250g
9.5 3/8in. 500g 0.1 509 0.1
4.75 No.4 1009
20g
0.1
0.1
209 0.1
0.001
2.00 or less | No.10, orless 209
Doc Ref: CIv-MS-123-01-Water Content-ASTM Page 3of 4
HIS C C L N I s HALL NoI FE F |*ObUC NFAkT URTULI W I H o l 1 WEITTEN PEKISSION OF LONESTAR
Issue
SA METHOD STATEMENT
01
Rev
ESMETHOD FOR DETERMINATION OF
WATER (MOISTURE) 01
CONTENT OF SOIL AND ROCK
specimen
the minimum
size aggregate,
5.2 ample consisting entirely of intact rock or gravel broken into smaller pieces.
sample
mass shall be 500g. Represenlative portion ofthe overnight(12-16 h)
is
sufficient.
additional
In case
test specimen mass, an
5.3 Drying duration: In most cases drying a to a
constant
adequacy of
drying
where there is doubt concernit he
oven drying should be used in two hours interval. oven
specimens in the
same
moist
before placing
5.4 Specimens shall be
removed
(replace
Unless they are being dried overnight. the container from
the oven
remove until the
mass, temperature or
5.5 After the specimen hasdried to constant
container to
cool to room
specimen
with
container.
specimen and of the
r used) allow the Determine the dry
mass
I e r Ccan be handle comfortably.
6.0 CALcULATION
= (Mw/Ms)x100
W=(Moms-Mcs(Mods-Me)}x
100
Where
W Water content(%) (9)
and moist specimen
Mcms Mass of container dried specimen (9)
oven
Mass of container and
Mcds=
Mc = Mass of container (9)
Mw Mass of water ()
(9)
Ms =Mass of oven dry specimen
REPORTING
7.0 1% or 0.1% respect
to the method
A and B
Water content either
7.1
7.2 Date of testing
7.3 Date of reporting
7.4 LTIS Job #
LTIS Sample #
7.5
LTIS Report #
7.6
Client name and address
7.7
Client sample identification
7.8
8.0 REFERENCES
ASTM D 2216-10
8.1
Page 4of 4
Doc Ref: CV-MS-123-01-Water Content-ASTM
4IS CLWEN S -AALL NCO1 EF FE RODUCID IN PAF1 OR F.JIL WITHOU TFE WEITEN =ERVIS SICN OF 1ONESTAR
