ASTM C941-02

Standard Test Method for Water Retentivity of Grout Mixtures for Preplaced-Aggregate Concrete in the Laboratory

SIGNIFICANCE AND USE
This test method measures the ability of a grout mixture to retain its mixing water.
It is used for qualifying grout fluidifiers to be used in the production of PA concrete.
It may be used to compare the effects of various admixtures or materials combinations on the water retentivity properties of any cement-water grout.
SCOPE
1.1 This test method covers the procedure for determining the water retentivity of freshly mixed hydraulic cement grout mixtures for preplaced-aggregate (PA) concrete.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Dec-2002
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.41 - Hydraulic Cement Grouts

Relations

• Replaces: ASTM C941-96 - Standard Test Method for Water Retentively of Grout Mixtures for Preplaced-Aggregate Concrete in the Laboratory
• Effective Date: 10-Dec-2002
• Replaced By: ASTM C941-10 - Standard Test Method for Water Retentivity of Grout Mixtures for Preplaced-Aggregate Concrete in the Laboratory
• Effective Date: 15-Jun-2010
• Referred By: ASTM C937-23 - Standard Specification for Grout Fluidifier for Preplaced-Aggregate Concrete
• Effective Date: 10-Dec-2002
• Referred By: ASTM C938-19 - Standard Practice for Proportioning Grout Mixtures for Preplaced-Aggregate Concrete
• Effective Date: 10-Dec-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C941–02
Standard Test Method for
Water Retentivity of Grout Mixtures for Preplaced-Aggregate
1
Concrete in the Laboratory
This standard is issued under the fixed designation C941; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5.1.1 Funnel, porcelain Büchner filtering, 111 mm inside
diameter at the perforated plate and 500 mL in volume.
1.1 This test method covers the procedure for determining
5.1.2 Filter Paper, Specification E832, Type 2, Class G,
the water retentivity of freshly mixed hydraulic cement grout
disk, 11-cm diameter filter paper.
mixtures for preplaced-aggregate (PA) concrete.
5.1.3 Graduated Cylinder, 250 mL cut down to about 130
1.2 The values stated in SI units are to be regarded as the
mL.
standard. The values given in parentheses are for information
5.1.4 Vacuum Gage or manometer graduated in increments
only.
of 1 kPa to 100 kPa (30-in. Hg) vacuum.
1.3 This standard does not purport to address all of the
5.1.5 Vacuum Pump or other source of reduced pressure,
safety concerns, if any, associated with its use. It is the
capable of maintaining a minimum vacuum of 95 kPa (28 in.
responsibility of the user of this standard to establish appro-
Hg) on a system having a volume of not less than 1 L.
priate safety and health practices and determine the applica-
5.2 Stop Watch, having a least reading of not more than 0.2
bility of regulatory limitations prior to use.
s.
2. Referenced Documents 5.3 Thermometer, accurate to 0.5°C (1.0°F), for measuring
2
ambient and grout temperatures.
2.1 ASTM Standards:
E832 Specification for Laboratory Filter Papers
6. Sampling
3. Summary of Test Method
6.1 The test sample shall consist of at least 500 mL of
freshly mixed grout representative of grout in the mixer. The
3.1 The time required for the extraction of a standard
temperature of the laboratory sample of grout shall be 23.0 6
amount of water by vacuum from a grout sample is measured.
2.0°C (73.5 6 3.5°F).
4. Significance and Use
7. Procedure
4.1 This test method measures the ability of a grout mixture
7.1 Dampen a single filter paper disk and place it on the
to retain its mixing water.
perforatedplateofthefilteringfunnel(seeFig.1).Keepthetop
4.2 It is used for qualifying grout fluidifiers to be used in the
of the filtering funnel level.Apply to and maintain a minimum
production of PA concrete.
vacuum in the system below the stopcock of 95 kPa (28 in. Hg)
4.3 It may be used to compare the effects of various
for the duration of the test. Introduce grout into the funnel until
admixtures or materials combinations on the water retentivity
it is filled flush with the top. Open the stopcock between the
properties of any cement-water grout.
filtering funnel and the graduated cylinder and at the same time
5. Apparatus
start the stop watch. Perform these operations not more than 1
min after taking the grout sample from the mixer.
5.1 Extraction A
...