ASTM C688 - 14

    Standard Specification for Functional Additions for Use in Hydraulic Cements

    Active Standard ASTM C688 | Developed by Subcommittee: C01.20

    Book of Standards Volume: 04.01

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    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.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. 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 incorporated during manufacture of the cement.

    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 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.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C10/C10M Specification for Natural Cement

    C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens

    C78 Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)

    C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)

    C143/C143M Test Method for Slump of Hydraulic-Cement Concrete

    C150 Specification for Portland Cement

    C151 Test Method for Autoclave Expansion of Hydraulic Cement

    C157/C157M Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete

    C187 Test Method for Amount of Water Required for Normal Consistency of Hydraulic Cement Paste

    C219 Terminology Relating to Hydraulic Cement

    C226 Specification for Air-Entraining Additions for Use in the Manufacture of Air-Entraining Hydraulic Cement

    C232 Test Methods for Bleeding of Concrete

    C234 Test Method for Comparing Concretes on the Basis of the Bond Developed with Reinforcing Steel (Discontinued 2000)

    C266 Test Method for Time of Setting of Hydraulic-Cement Paste by Gillmore Needles

    C403/C403M Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance

    C451 Test Method for Early Stiffening of Hydraulic Cement (Paste Method)

    C465 Specification for Processing Additions for Use in the Manufacture of Hydraulic Cements

    C595 Specification for Blended Hydraulic Cements

    C596 Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement

    C666/C666M Test Method for Resistance of Concrete to Rapid Freezing and Thawing

    C845 Specification for Expansive Hydraulic Cement

    C1157 Performance Specification for Hydraulic Cement

    ICS Code

    ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)

    UNSPSC Code

    UNSPSC Code 30111601(Cement)

    DOI: 10.1520/C0688

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