ASTM C845 / C845M - 18

    Standard Specification for Expansive Hydraulic Cement

    Active Standard ASTM C845 / C845M | Developed by Subcommittee: C01.13

    Book of Standards Volume: 04.01


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    Abstract

    This specification covers hydraulic cements that expand during the early hardening period after setting. The cement covered by this specification is suitable for use in shrinkage-compensating concrete and shall be designated as Type E-1. Expansive cement shall conform to the requirements as to chemical composition prescribed. Expansive cement shall conform to the physical requirements prescribed. The cement shall be sampled and the properties shall be determined with the following test methods: sampling, chemical analysis, time of setting, air content, restrained expansion of mortar, compressive strength, and density.

    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 hydraulic cements that expand during the early hardening period after setting.

    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 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard.

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

    ASTM Standards

    C33/C33M Specification for Concrete Aggregates

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

    C114 Test Methods for Chemical Analysis of Hydraulic Cement

    C183/C183M Practice for Sampling and the Amount of Testing of Hydraulic Cement

    C185 Test Method for Air Content of Hydraulic Cement Mortar

    C188 Test Method for Density of Hydraulic Cement

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

    C688 Specification for Functional Additions for Use in Hydraulic Cements

    C806 Test Method for Restrained Expansion of Expansive Cement Mortar

    C807 Test Method for Time of Setting of Hydraulic Cement Mortar by Modified Vicat Needle


    ICS Code

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

    UNSPSC Code

    UNSPSC Code 30111601(Cement)


    Referencing This Standard
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    DOI: 10.1520/C0845_C0845M-18

    Citation Format

    ASTM C845 / C845M-18, Standard Specification for Expansive Hydraulic Cement, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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