ASTM C1741-11a

Standard Test Method for Bleed Stability of Cementitious Post-Tensioning Tendon Grout

SIGNIFICANCE AND USE
This test method is designed to evaluate the bleed stability of a freshly-mixed grout under static pressure. It can be used in both the laboratory to qualify grout materials and in the field as a quality control test. When used to qualify grout materials, replicate tests may be specified. It is intended that the test pressure, acceptance criteria, and number of replicate tests be set forth in the contract documents if this test method is referenced. These values will normally vary depending on the vertical rise of the post-tensioning tendon.  
Note 1—Appendix X1 includes a reference for an example of test pressures and bleeding limits.
The procedure for this test was developed by Schokker et al. based on previous work by Schupack.
SCOPE
1.1 This test method is designed to determine the bleed stability of freshly-mixed cementitious grout under static pressure.
1.2 Units—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. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)

General Information

• Status: Historical
• Publication Date: 14-Dec-2011
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.41 - Hydraulic Cement Grouts

Relations

• Replaces: ASTM C1741-11 - Standard Test Method for Bleed Stability of Cementitious Post-Tensioning Tendon Grout
• Effective Date: 15-Dec-2011
• Replaced By: ASTM C1741-12 - Standard Test Method for Bleed Stability of Cementitious Post-Tensioning Tendon Grout
• Effective Date: 01-Jun-2012

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C1741–11a
Standard Test Method for
Bleed Stability of Cementitious Post-Tensioning Tendon
1
Grout
This standard is issued under the fixed designation C1741; 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 the solid materials within the grout and the filtering action of
strands and wires when subjected to static pressure and
1.1 This test method is designed to determine the bleed
capillary action.
stability of freshly-mixed cementitious grout under static
3.2.3 grout, n—mixture of cementitious material and water,
pressure.
with or without aggregate and admixtures, proportioned to
1.2 Units—The values stated in SI units are to be regarded
produce a pourable consistency without segregation of the
as standard. No other units of measurement are included in this
constituents.
standard.
3.2.4 post-tensioning, adj—referring to a method of pre-
1.3 This standard does not purport to address all of the
stressing in which prestressing steel is tensioned after the
safety concerns, if any, associated with its use. It is the
concrete has gained sufficient strength.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Significance and Use
bility of regulatory limitations prior to use. (Warning—Fresh
4.1 This test method is designed to evaluate the bleed
hydraulic cementitious mixtures are caustic and may cause
2
stability of a freshly-mixed grout under static pressure. It can
chemical burns to skin and tissue upon prolonged exposure.)
be used in both the laboratory to qualify grout materials and in
2. Referenced Documents the field as a quality control test. When used to qualify grout
3
materials, replicate tests may be specified. It is intended that
2.1 ASTM Standards:
the test pressure, acceptance criteria, and number of replicate
C125 Terminology Relating to Concrete and Concrete Ag-
tests be set forth in the contract documents if this test method
gregates
is referenced. These values will normally vary depending on
C938 Practice for Proportioning Grout Mixtures for
the vertical rise of the post-tensioning tendon.
Preplaced-Aggregate Concrete
NOTE 1—Appendix X1 includes a reference for an example of test
3. Terminology
pressures and bleeding limits.
3.1 Definitions—For definitions of terms used in this test
4.2 The procedure for this test was developed by Schokker
method, refer to Terminology C125.
4 5
et al. based on previous work by Schupack.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 bleed stability, n—of cementitious grout, resistance to
5. Apparatus
bleeding.
5.1 The apparatus consists of a commercially available
3.2.2 bleeding, n—of cementitious post-tensioning tendon
pressure filtration funnel, stand, pressure supply with gauge,
grout, autogenous flow of mixing water within, or its emer-
pressure regulator, valve, drip wick, and bleed water collection
gence from, newly placed grout; caused by the settlement of
container as shown in Fig. 1 and Fig. 2.
5.1.1 Filtration Funnel—A 47-mm diameter stainless steel
pressure filtration funnel with a nominal capacity of 200 mLas
1
This test method is under the jurisdiction of ASTM Committee C09 on
shown in Fig. 2. The filtration funnel shall have removable
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.41 on Hydraulic Cement Grouts. threaded caps at both ends with a stem for connection of the
Current edition approved Dec. 15, 2011. Published January 2012. Last previous
edition approved in 2011 as C1741–11. DOI: 10.1520/C1741-11a
2 4
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Schokker,A. J., B.D. Koester, J.E. Breen, and M. E. Kreger, “Development of
Annual Book of ASTM Standards, Vol. 04.02. High Performance Grouts for Bonded Post-Tensioned Structures,” Research Report
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 1405-2, Center for Transportation Research, October 1999.
5
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Schupack, M. “Admixture for Controlling Bleed in Cement Grout Used in
Standards volume information, refer to the standard’s Document Summary page on Post-Tensioning,” Precast/Prestressed Concrete Institute Journal, Nov.-Dec. 1974
the ASTM website. , pp. 1-10.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1741–11a
FIG. 1 Test Apparatus
FIG. 2 47-mm Filtration Funnel with 200 mL Nominal Capacity
gas supp
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:C1741–11 Designation:C1741–11a
Standard Test Method for
Bleed Stability of Cementitious Post-Tensioning Tendon
1
Grout
This standard is issued under the fixed designation C1741; 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 is designed to determine the bleed stability of freshly-mixed cementitious grout under static pressure.
1.2 Units—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. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and
2
tissue upon prolonged exposure.)
2. Referenced Documents
3
2.1 ASTM Standards:
C125 Terminology Relating to Concrete and Concrete Aggregates
C938 Practice for Proportioning Grout Mixtures for Preplaced-Aggregate Concrete
3. Terminology
3.1 Definitions—For definitions of terms used in this test method, refer to Terminology C125.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 bleed stability, n—of cementitious grout, resistance to bleeding.
3.2.2 bleeding, n—of cementitious post-tensioning tendon grout, autogenous flow of mixing water within, or its emergence
from, newly placed grout; caused by the settlement of the solid materials within the grout and the filtering action of strands and
wires when subjected to static pressure and capillary action.
3.2.3 grout, n—mixture of cementitious material and water, with or without aggregate and admixtures, proportioned to produce
a pourable consistency without segregation of the constituents.
3.2.4 post-tensioning, adj—referring to a method of prestressing in which prestressing steel is tensioned after the concrete has
gained sufficient strength.
4. Significance and Use
4.1 This test method is designed to evaluate the bleed stability of a freshly-mixed grout under static pressure. It can be used
in both the laboratory to qualify grout materials and in the field as a quality control test. When used to qualify grout materials,
replicate tests may be specified. It is intended that the test pressure, acceptance criteria, and number of replicate tests be set forth
in the contract documents if this test method is referenced. These values will normally vary depending on the vertical rise of the
post-tensioning tendon.
NOTE 1—Appendix X1 includes a reference for an example of test pressures and bleeding limits.
4 5
4.2 The procedure for this test was developed by Schokker et al. based on previous work by Schupack.
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 May 1, 2011. Published June 2011. DOI: 10.1520/C1741-11
Current edition approved Dec. 15, 2011. Published January 2012. Last previous edition approved in 2011 as C1741–11. DOI: 10.1520/C1741-11a
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Annual Book of ASTM Standards, Vol. 04.02.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
4
Schokker, A. J., B.D. Koester, J.E. Breen, and M. E. Kreger, “Development of High Performance Grouts for Bonded Post- Tensioned Structures,” Research Report
1405-2, Center for Transportation Research, October 1999.
5
Schupack, M. “Admixture for Controlling Bleed in Cement Grout Used in Post-Tensioning,” Precast/Prestressed Concrete Institute Journal, Nov.-Dec. 1974 , pp. 1-10.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1741–11a
5. Apparatus
5.1 The apparatus consists of a commercially available pressure filtration funnel, stand, pressure supply with gauge, pressure
regulator, valve, drip wick, and bleed water collection c
...