ASTM C1741-18
(Test Method)Standard Test Method for Bleed Stability of Cementitious Post-Tensioning Tendon Grout
Standard Test Method for Bleed Stability of Cementitious Post-Tensioning Tendon Grout
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.
4.2 The procedure for this test was developed by Schokker et al.4 based on previous work by Schupack.5
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 tissue upon prolonged exposure.2)
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C1741 − 18
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* 3.2 Definitions of Terms Specific to This Standard:
3.2.1 bleed stability, n—of cementitious grout, resistance to
1.1 This test method is designed to determine the bleed
bleeding.
stability of freshly-mixed cementitious grout under static
3.2.2 bleeding, n—of cementitious post-tensioning tendon
pressure.
grout, autogenous flow of mixing water within, or its emer-
1.2 Units—The values stated in SI units are to be regarded
gence from, newly placed grout; caused by the settlement of
as standard. No other units of measurement are included in this
the solid materials within the grout and the filtering action of
standard.
strands and wires when subjected to static pressure and
1.3 This standard does not purport to address all of the
capillary action.
safety concerns, if any, associated with its use. It is the
3.2.3 grout, n—mixture of cementitious material and water,
responsibility of the user of this standard to establish appro-
with or without aggregate and admixtures, proportioned to
priate safety and health practices and determine the applica-
produce a pourable consistency without segregation of the
bility of regulatory limitations prior to use. (Warning—Fresh
constituents.
hydraulic cementitious mixtures are caustic and may cause
2
3.2.4 post-tensioning, adj—referring to a method of pre-
chemical burns to skin and tissue upon prolonged exposure. )
stressing in which prestressing steel is tensioned after the
1.4 This international standard was developed in accor-
concrete has gained sufficient strength.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4. Significance and Use
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 4.1 This test method is designed to evaluate the bleed
Barriers to Trade (TBT) Committee. stability of a freshly-mixed grout under static pressure. It can
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
2.1 ASTM Standards: materials, replicate tests may be specified. It is intended that
C125 Terminology Relating to Concrete and Concrete Ag- the test pressure, acceptance criteria, and number of replicate
gregates tests be set forth in the contract documents if this test method
C938 Practice for Proportioning Grout Mixtures for is referenced. These values will normally vary depending on
Preplaced-Aggregate Concrete the vertical rise of the post-tensioning tendon.
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
4 5
method, refer to Terminology C125. et al. based on previous work by Schupack.
5. Apparatus
1
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee
5.1 The apparatus consists of a commercially available
C09.41 on Hydraulic Cement Grouts.
pressure filtration funnel, stand, pressure supply with gauge,
Current edition approved Oct. 1, 2018. Published October 2018. Originally
approved in 2011. Last previous edition approved in 2012 as C1741 – 12. DOI:
10.1520/C1741-18.
2 4
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Schokker, A. J., Koester, B. D., Breen, J. E., and Kreger, M. E., “Development
Annual Book of ASTM Standards, Vol 04.02. of High Performance Grouts for Bonded Post- Tensioned Structures,” Research
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Report 1405-2, Center for Transportation Research, October 1999.
5
contact ASTM Customer Service at service@astm.org. 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.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International,
...
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: C1741 − 12 C1741 − 18
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 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. )
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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,
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 1, 2012Oct. 1, 2018. Published July 2012October 2018. Originally approved in 2011. Last previous edition approved in 20112012 as C1741
– 11a.12. DOI: 10.1520/C1741-12.10.1520/C1741-18.
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing,Annual Book of ASTM Standards, Vol 04.02.
3
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 ----------------------
C1741 − 18
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.
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 collecti
...
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