ASTM C938-16
(Practice)Standard Practice for Proportioning Grout Mixtures for Preplaced-Aggregate Concrete
Standard Practice for Proportioning Grout Mixtures for Preplaced-Aggregate Concrete
SIGNIFICANCE AND USE
5.1 This practice provides a standard procedure for selecting proportions for mixtures of grout to be used at fluid consistency in the production of PA concrete meeting applicable criteria for strength, density, and other properties.
5.2 This practice is also useful for determining the composition of grout mixed at fluid consistency and meeting specified requirements for filling voids, cavities, and spaces in rock, foundations, and concrete structures.
SCOPE
1.1 This practice describes the laboratory procedure for selecting proportions for grout mixtures required in the production of 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.
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Designation: C938 − 16
Standard Practice for
Proportioning Grout Mixtures for Preplaced-Aggregate
1
Concrete
This standard is issued under the fixed designation C938; 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* C941 Test Method for Water Retentivity of Grout Mixtures
for Preplaced-Aggregate Concrete in the Laboratory
1.1 This practice describes the laboratory procedure for
C942 Test Method for Compressive Strength of Grouts for
selecting proportions for grout mixtures required in the pro-
Preplaced-Aggregate Concrete in the Laboratory
duction of preplaced-aggregate (PA) concrete.
C943 Practice for Making Test Cylinders and Prisms for
1.2 The values stated in SI units are to be regarded as
Determining Strength and Density of Preplaced-
standard. No other units of measurement are included in this
Aggregate Concrete in the Laboratory
standard.
1.3 This standard does not purport to address all of the 3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to establish appro-
3.1.1 For definitions of terms used in this test method, refer
priate safety and health practices and determine the applica-
to Terminologies C125 and C219.
bility of regulatory limitations prior to use.
4. Summary of Practice
2. Referenced Documents
4.1 Grouts at fluid consistency are prepared from one or
2
2.1 ASTM Standards:
more mixtures of cement, pozzolan, fine aggregate, grout
C125 Terminology Relating to Concrete and Concrete Ag-
fluidifier, with or without other chemical admixtures, and
gregates
water, and tested to determine:
C150/C150M Specification for Portland Cement
4.1.1 The properties of the grout, and
C185 Test Method for Air Content of Hydraulic Cement
4.1.2 The properties of PA concrete made with the grout
Mortar
when the grout is intended for such use.
C219 Terminology Relating to Hydraulic Cement
4.2 The procedure and equipment required for mixing this
C618 Specification for Coal Fly Ash and Raw or Calcined
grout are prescribed in this practice.
Natural Pozzolan for Use in Concrete
C637 Specification for Aggregates for Radiation-Shielding
5. Significance and Use
Concrete
C937 Specification for Grout Fluidifier for Preplaced-
5.1 Thispracticeprovidesastandardprocedureforselecting
Aggregate Concrete
proportionsformixturesofgrouttobeusedatfluidconsistency
C939/C939M Test Method for Flow of Grout for Preplaced-
in the production of PAconcrete meeting applicable criteria for
Aggregate Concrete (Flow Cone Method)
strength, density, and other properties.
C940 Test Method for Expansion and Bleeding of Freshly
5.2 This practice is also useful for determining the compo-
Mixed Grouts for Preplaced-Aggregate Concrete in the
sition of grout mixed at fluid consistency and meeting specified
Laboratory
requirements for filling voids, cavities, and spaces in rock,
foundations, and concrete structures.
1
This practice is under the jurisdiction of ASTM Committee C09 on Concrete
6. Apparatus
and Concrete Aggregates and is the direct responsibility of Subcommittee C09.41
on Hydraulic Cement Grouts.
6.1 Mixer, constructed as shown in Fig. 1. The three mixer
Current edition approved Feb. 1, 2016. Published March 2016. Originally
blades shall be made of steel plate, 3-mm thick, with a 100- by
approved in 1982. Last previous edition approved in 2010 as C938–10. DOI:
10.1520/C0938-16.
125-mm elliptical shape. Each blade shall have two 25- by
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
75-mm slots centered on the major axis, and shall be welded to
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the shaft at an angle of approximately 23° with the horizontal
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. in such a way as to force grout to the bottom of the mixer
*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
---------------------- Page: 1 ----------------------
C938 − 16
FIG. 1 Grout Mixer
during rotation. The mixer blades shall be powered to rotate at 8.2 Agitation of the batch shall be continuous until all
approximately 275 r/min under load. samples required from that batch have been drawn.
6.2 Scales or Balance, accurate to within 0.3 % of the test 8.3 Grout in the mixer shall not be retempered by the
mass at any point within range of use. addition of water. If mixing water is added in increments to
adjust fluidity, a
...
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: C938 − 10 C938 − 16
Standard Practice for
Proportioning Grout Mixtures for Preplaced-Aggregate
1
Concrete
This standard is issued under the fixed designation C938; 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 practice describes the laboratory procedure for selecting proportions for grout mixtures required in the production of
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 provided for information
purposes 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
C150C150/C150M Specification for Portland Cement
C185 Test Method for Air Content of Hydraulic Cement Mortar
C219 Terminology Relating to Hydraulic Cement
C618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
C637 Specification for Aggregates for Radiation-Shielding Concrete
C937 Specification for Grout Fluidifier for Preplaced-Aggregate Concrete
C939C939/C939M Test Method for Flow of Grout for Preplaced-Aggregate Concrete (Flow Cone Method)
C940 Test Method for Expansion and Bleeding of Freshly Mixed Grouts for Preplaced-Aggregate Concrete in the Laboratory
C941 Test Method for Water Retentivity of Grout Mixtures for Preplaced-Aggregate Concrete in the Laboratory
C942 Test Method for Compressive Strength of Grouts for Preplaced-Aggregate Concrete in the Laboratory
C943 Practice for Making Test Cylinders and Prisms for Determining Strength and Density of Preplaced-Aggregate Concrete
in the Laboratory
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 Practice
4.1 Grouts at fluid consistency are prepared from one or more mixtures of cement, pozzolan, fine aggregate, grout fluidifier, with
or without other chemical admixtures, and water, and tested to determine:
4.1.1 The properties of the grout, and
4.1.2 The properties of PA concrete made with the grout when the grout is intended for such use.
4.2 The procedure and equipment required for mixing this grout are prescribed in this practice.
1
This practice 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 2010March 2016. Originally approved in 1982. Last previous edition approved in 20022010 as
C938–02.–10. DOI: 10.1520/C0938-10.10.1520/C0938-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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
---------------------- Page: 1 ----------------------
C938 − 16
5. Significance and Use
5.1 This practice provides a standard procedure for selecting proportions for mixtures of grout to be used at fluid consistency
in the production of PA concrete meeting applicable criteria for strength, density, and other properties.
5.2 This practice is also useful for determining the composition of grout mixed at fluid consistency and meeting specified
requirements for filling voids, cavities, and spaces in rock, foundations, and concrete structures.
6. Apparatus
1
6.1 Mixer, constructed as shown in Fig. 1. The three mixer blades shall be made of steel plate, 3-mm ( ⁄8-in.) thick, with a
100100- by 125-mm (4 by 5-in.) elliptical shape. Each blade shall have two 2525- by 75-mm (1 by 3-in.) slots centered on the
major axis, and shall be welded to the shaft at an angle of approximately 23° with the horizontal in such a way as to force grout
to
...
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