ASTM C1646 / C1646M - 16

    Standard Practice for Making and Curing Test Specimens for Evaluating Resistance of Coarse Aggregate to Freezing and Thawing in Air-Entrained Concrete

    Active Standard ASTM C1646 / C1646M | Developed by Subcommittee: C09.67

    Book of Standards Volume: 04.02


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    Significance and Use

    4.1 This practice provides standard requirements for proportioning concrete, and for preparing and conditioning test specimens suitable for evaluating the durability of coarse aggregate in air-entrained concrete subjected to freezing and thawing in accordance with Test Method C666/C666M.

    4.2 Concrete having an adequate air-void system may not be resistant to freezing and thawing if it contains coarse aggregate that becomes critically saturated. An aggregate particle is considered to be critically saturated when there is insufficient unfilled pore space to accommodate the expansion of water that accompanies the freezing.

    1. Scope

    1.1 This practice covers procedures for making and curing test specimens for evaluating resistance of normal-weight coarse aggregates to freezing and thawing in air-entrained concrete in accordance with Test Method C666/C666M, Procedure A or B.

    1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

    1.3 This practice does not purport to address all 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 use.2)


    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

    C33 Specification for Concrete Aggregates

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

    C125 Terminology Relating to Concrete and Concrete Aggregates

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

    C150 Specification for Portland Cement

    C173/C173M Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method

    C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory

    C231 Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

    C490 Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete

    C494/C494M Specification for Chemical Admixtures for Concrete

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

    D75 Practice for Sampling Aggregates

    ACI Standard

    211.1


    ICS Code

    ICS Number Code 91.100.30 (Concrete and concrete products)

    UNSPSC Code

    UNSPSC Code 30111800(Aggregates)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/C1646_C1646M-16

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM C1646 / C1646M-16, Standard Practice for Making and Curing Test Specimens for Evaluating Resistance of Coarse Aggregate to Freezing and Thawing in Air-Entrained Concrete, ASTM International, West Conshohocken, PA, 2016, www.astm.org

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