ASTM C941-96

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

SCOPE
1.1 This test method covers the procedure for determining the water retentively 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.  
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: 31-Dec-1995
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.41 - Hydraulic Cement Grouts

Relations

• Replaced By: ASTM C941-02 - Standard Test Method for Water Retentivity of Grout Mixtures for Preplaced-Aggregate Concrete in the Laboratory
• Effective Date: 10-Dec-2002
• Referred By: ASTM C938-19 - Standard Practice for Proportioning Grout Mixtures for Preplaced-Aggregate Concrete
• Effective Date: 01-Jan-1996
• Referred By: ASTM C937-23 - Standard Specification for Grout Fluidifier for Preplaced-Aggregate Concrete
• Effective Date: 01-Jan-1996

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 941 – 96
Standard Test Method for
Water Retentivity of Grout Mixtures for Preplaced-Aggregate
Concrete in the Laboratory
This standard is issued under the fixed designation C 941; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 5.1.4 Vacuum Gage or manometer graduated in increments
of 1 kPa to 100 kPa (30-in. Hg) vacuum.
1.1 This test method covers the procedure for determining
5.1.5 Vacuum Pump or other source of reduced pressure,
the water retentivity of freshly mixed hydraulic cement grout
capable of maintaining a minimum vacuum of 95 kPa (28 in.
mixtures for preplaced-aggregate (PA) concrete.
Hg) on a system having a volume of not less than 1 L.
1.2 The values stated in SI units are to be regarded as the
5.2 Stop Watch, having a least reading of not more than 0.2
standard.
s.
1.3 This standard does not purport to address all of the
5.3 Thermometer, accurate to 0.5°C (1.0°F), for measuring
safety concerns, if any, associated with its use. It is the
ambient and grout temperatures.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6. Sampling
bility of regulatory limitations prior to use.
6.1 The test sample shall consist of at least 500 mL of
2. Referenced Documents freshly mixed grout representative of grout in the mixer. The
temperature of the laboratory sample of grout shall be 23 6
2.1 ASTM Standards:
1.7°C (73.4 6 3°F).
E 832 Specification for Laboratory Filter Papers
7. Procedure
3. Summary of Test Method
7.1 Dampen a single filter paper disk and place it on the
3.1 The time required for the extraction of a standard
perforated plate of the filtering funnel (see Fig. 1). Keep the top
amount of water by vacuum from a grout sample is measured.
of the filtering funnel level. Apply to and maintain a minimum
4. Significance and Use
vacuum in the system below the stopcock of 95 kPa (28 in. Hg)
for the duration of the test. Introduce grout into the funnel until
4.1 This test method measures the ability of a grout mixture
it is filled flush with the top. Open the stopcock between the
to retain its mixing water.
filtering funnel and the graduated cylinder and at the same time
4.2 It is used for qualifying grout fluidifiers to be used in the
start the stop watch. Perform these operations not more than 1
production of PA concrete.
min after taking the grout sample from the mixer.
4.3 It may be used to compare the effects of various
7.2 When 60 mL of water have been removed from the
admixtures or materials combinations on the water retentivity
sample, stop the stop watch.
properties of any cement-water grout.
7.3 When using this method for acceptance testing of a
5. Apparatus
grout fluidifier, take the test sample within 1 min after
completion of 3
...