ASTM C941-16

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

SIGNIFICANCE AND USE
5.1 This test method measures the ability of a grout mixture to retain its mixing water.  
5.2 It is used for qualifying grout fluidifiers to be used in the production of PA concrete.  
5.3 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 standard. No other units of measurement are included in this 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-Jan-2016
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.41 - Hydraulic Cement Grouts

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 − 16
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* 5.2 It is used for qualifying grout fluidifiers to be used in the
production of PA concrete.
1.1 This test method covers the procedure for determining
the water retentivity of freshly mixed hydraulic cement grout 5.3 It may be used to compare the effects of various
mixtures for preplaced-aggregate (PA) concrete. admixtures or materials combinations on the water retentivity
properties of any cement-water grout.
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
6. Apparatus
standard.
6.1 Extraction Apparatus, assembled as in Fig. 1, including
1.3 This standard does not purport to address all of the
the following:
safety concerns, if any, associated with its use. It is the
6.1.1 Funnel, porcelain Büchner filtering, 111 mm inside
responsibility of the user of this standard to establish appro-
diameter at the perforated plate and 500 mL in volume.
priate safety and health practices and determine the applica-
6.1.2 Filter Paper, Specification E832, Type 2, Class G,
bility of regulatory limitations prior to use.
disk, 11-cm diameter filter paper.
2. Referenced Documents 6.1.3 Graduated Cylinder, 250 mL cut down to about 130
2 mL.
2.1 ASTM Standards:
6.1.4 Vacuum Gage or manometer graduated in increments
C125 Terminology Relating to Concrete and Concrete Ag-
of 1 kPa to 100 kPa vacuum.
gregates
6.1.5 Vacuum Pump or other source of reduced pressure,
C219 Terminology Relating to Hydraulic Cement
capable of maintaining a minimum vacuum of 95 kPa on a
E832 Specification for Laboratory Filter Papers
system having a volume of not less than 1 L.
3. Terminology
6.2 Stop Watch, having a least reading of not more than 0.2
3.1 Definitions: s.
3.1.1 For definitions of terms used in this test method, refer
6.3 Thermometer, accurate to 0.5°C, for measuring ambient
to Terminologies C125 and C219.
and grout temperatures.
4. Summary of Test Method
7. Sampling
4.1 The time required for the extraction of a standard
7.1 The test sample shall consist of at least 500 mL of
amount of water by vacuum from a grout specimen is mea-
freshly mixed grout representative of grout in the mixer. Bring
sured.
the temperature of the laboratory sample of grout to 23.0 6
5. Significance and Use 2.0°C and record the tempature.
5.1 This test method measures the ability of a grout mixture 7.2 Maintain the ambient temperature of the room in which
to retain its mixing water. the test is performed at 23.0 6 2°C and record the temperature.
8. Procedure
1
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee
8.1 Place a wetted filter paper on the perforated plate of the
C09.41 on Hydraulic Cement Grouts.
filtering funnel (see Fig. 1). Keep the top of the filtering funnel
Current edition approved Feb. 1, 2016. Published April 2016. Originally
level. Apply and maintain a vacuum of at least 95 kPa in the
approved in 1981. Last previous edition approved in 2010 as C941–10. DOI:
10.1520/C0941-16.
system below the sto
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C941 − 10 C941 − 16
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*
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.standard. No other units of measurement are included in this 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C125 Terminology Relating to Concrete and Concrete Aggregates
C219 Terminology Relating to Hydraulic Cement
E832 Specification for Laboratory Filter Papers
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminologies C125 and C219.
4. Summary of Test Method
4.1 The time required for the extraction of a standard amount of water by vacuum from a grout samplespecimen is measured.
5. Significance and Use
5.1 This test method measures the ability of a grout mixture to retain its mixing water.
5.2 It is used for qualifying grout fluidifiers to be used in the production of PA concrete.
5.3 It may be used to compare the effects of various admixtures or materials combinations on the water retentivity properties
of any cement-water grout.
6. Apparatus
6.1 Extraction Apparatus, assembled as in Fig. 1, including the following:
6.1.1 Funnel, porcelain Büchner filtering, 111 mm inside diameter at the perforated plate and 500 mL in volume.
6.1.2 Filter Paper, Specification E832, Type 2, Class G, disk, 11-cm diameter filter paper.
6.1.3 Graduated Cylinder, 250 mL cut down to about 130 mL.
6.1.4 Vacuum Gage or manometer graduated in increments of 1 kPa to 100 kPa (30-in. Hg) vacuum.
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.41
on Hydraulic Cement Grouts.
Current edition approved June 15, 2010Feb. 1, 2016. Published July 2010April 2016. Originally approved in 1981. Last previous edition approved in 20022010 as
C941–02.–10. DOI: 10.1520/C0941-10.10.1520/C0941-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C941 − 16
FIG. 1 Extraction Apparatus
6.1.5 Vacuum Pump or other source of reduced pressure, capable of maintaining a minimum vacuum of 95 kPa (28 in. Hg) on
a system having a volume of not less than 1 L.
6.2 Stop Watch, having a least reading of not more than 0.2 s.
6.3 Thermometer, accurate to 0.5°C (1.0°F), 0.5°C, for measuring ambient and grout temperatures.
7. Sampling
7.1 The test sample shall consist of at least 500 mL of freshly mixed grout representative of grout in the mixer. The Bring the
temperature of the laboratory sample of grout shall be to 23.0 6 2.0°C (73.5 6 3.5°F).and record the tempature.
7.2 Maintain the ambient temperature of the room in which the test is performed at 23.0 6 2°C and record the temperature.
8. Procedure
8.1 DampenPlace a singlewetted filter paper disk and place it on the perforated plate of the filtering funnel (see Fig. 1). Keep
the top of the filtering funnel level. Apply to and maintain a minimum vacuum vacuum of at least 95 kPa in the system below the
stopcock of 95 kPa (28 in. Hg) for the duration of the test. Introduce grout into the funnel until it is filled flush with the top. Open
the stopcock between the filtering funnel and the graduated cylinder and at the same time
...