Standard Specification for Functional Additions for Use in Hydraulic Cements

ABSTRACT
This specification covers methods to investigate the effectiveness of a material to beneficially change the properties of hydraulic cements when the material is interground with the clinker during manufacture of the cement. Cement, mortar, and concrete shall be tested and the individual grades shall conform to specified values of autoclave expansion, drying shrinkage, normal consistency, standard consistency, setting time, compressive strength, false set, water content, flexural strength, bond to steel, volume change, resistance to freezing and thawing, and bleeding. Accelerating addition, retarding addition, set-control addition, water-reducing addition, water-reducing and accelerating addition are detailed.
SCOPE
1.1 This specification covers methods to investigate the effectiveness of a material to beneficially change the properties of hydraulic cements when the material is interground with the clinker during manufacture of the cement.  
1.2 The values stated in SI units are to be regarded as the standard.  
1.3 The effect of additions in cement may markedly change properties other than those they are intended to modify. This specification is designed to test for such changes. Table 1 sets forth values for those properties of cement pastes and mortars that would permit a judgment of the changes effected by an addition. Likewise, Table 2 sets forth similar criteria for concrete. Certain additions may be found effective for more than one purpose as indicated in 3.1.4 and 3.1.5.

General Information

Status
Historical
Publication Date
30-Jun-2005
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM C688-00(2005) - Standard Specification for Functional Additions for Use in Hydraulic Cements
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 688 – 00 (Reapproved 2005)
Standard Specification for
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Functional Additions for Use in Hydraulic Cements
This standard is issued under the fixed designation C 688; 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 C 219 Terminology Relating to Hydraulic Cement
C 226 Specification forAir-EntrainingAdditions for Use in
1.1 This specification covers methods to investigate the
the Manufacture of Air-Entraining Hydraulic Cement
effectiveness of a material to beneficially change the properties
C 232 Test Method for Bleeding of Concrete
of hydraulic cements when the material is interground with the
C 234 Test Method for Comparing Concretes on the Basis
clinker during manufacture of the cement.
3
of the Bond Developed with Reinforcing Steel
1.2 The values stated in SI units are to be regarded as the
C 266 Test Method for Time of Setting of Hydraulic-
standard.
Cement Paste by Gillmore Needles
1.3 The effect of additions in cement may markedly change
C 403/C 403M TestMethodforTimeofSettingofConcrete
properties other than those they are intended to modify. This
Mixtures by Penetration Resistance
specification is designed to test for such changes. Table 1 sets
C 451 Test Method for Early Stiffening of Hydraulic Ce-
forth values for those properties of cement pastes and mortars
ment (Paste Method)
that would permit a judgment of the changes effected by an
C 465 Specification for ProcessingAdditions for Use in the
addition. Likewise, Table 2 sets forth similar criteria for
Manufacture of Hydraulic Cements
concrete. Certain additions may be found effective for more
C 595 Specification for Blended Hydraulic Cements
than one purpose as indicated in 3.1.4 and 3.1.5.
C 596 Test Method for Drying Shrinkage of Mortar Con-
2. Referenced Documents
taining Hydraulic Cement
2
C 666 Test Method for Resistance of Concrete to Rapid
2.1 ASTM Standards:
Freezing and Thawing
C 39/C 39M Test Method for Compressive Strength of Cy-
C 845 Specification for Expansive Hydraulic Cement
lindrical Concrete Specimens
C 1157M Performance Specification for Blended Hydraulic
C78 Test Method for Flexural Strength of Concrete (Using
Cement
Simple Beam with Third-Point Loading)
C 109/C 109M Test Method for Compressive Strength of
3. Terminology
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
3.1 Definitions:
Specimens)
3.1.1 accelerating addition—a functional addition that ac-
C 143/C 143M Test Method for Slump of Hydraulic Ce-
celerates the setting or early strength, or both, of concrete and
ment Concrete
mortar.
C 150 Specification for Portland Cement
3.1.2 retarding addition—a functional addition that retards
C 151 Test Method for Autoclave Expansion of Hydraulic
the setting of concrete and mortar.
Cement
3.1.3 set-control addition—a functional addition composed
C 157/C 157M Test Method for Length Change of Hard-
essentially of calcium sulfate in any hydration state from
ened Hydraulic Cement, Mortar, and Concrete
CaSO to CaSO ·2H O.
4 4 2
C 187 Test Method for Normal Consistency of Hydraulic
3.1.4 water-reducing addition—a functional addition used
Cement
to reduce the quantity of mixing water required to produce
concrete and mortar of a given consistency.
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This specification is under the jurisdiction of ASTM Committee C01 on
3.1.5 water-reducing and accelerating addition—a func-
Cement and is the direct responsibility of Subcommittee C01.20 on Additions.
tional addition that reduces the quantity of mixing water
Current edition approved July 1, 2005. Published August 2005. Originally
required to produce concrete of a given consistency and that
approved in 1971. Last previous edition approved in 2000 as C 688 – 00.
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
3
the ASTM website. Withdrawn.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C 688 – 00 (2005)
TABLE 1 Criteria for Evaluating Neat Cement and Mortar Containing Functional Cement Additions
Type of Addition
Tests
Water-Reducing Water-Reducing and
Water Reducing Retarding Accelerating Set-Control
and Retarding Accelerating
Normal consistency, deviation from control, −1.0 min +1.0 max +1.0 max −1.0 min −1.0 mm 61.0 max
A
percentage points
Standard consistency (flow) deviation from −4.0 min +2.0 max +2.0 max −4.0 min −4.0 min 62.0 max
A
control, percentage points
Se
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