ASTM D1635 / D1635M - 12

    Standard Test Method for Flexural Strength of Soil-Cement Using Simple Beam with Third-Point Loading

    Active Standard ASTM D1635 / D1635M | Developed by Subcommittee: D18.15

    Book of Standards Volume: 04.08


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    Significance and Use

    This test method is used to determine the flexural strength of soil-cement. Flexural strength is significant in pavement design and is used to determine slab thickness.

    Note 2—The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.

    1. Scope

    1.1 This test method covers the determination of the flexural strength of soil-cement by the use of a simple beam with third-point loading.

    Note 1—For methods of molding soil-cement specimens, see Practice D1632.

    1.2 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 unless superseded by this standard.

    1.3 UnitsThe 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. The SI units are presented in brackets.

    1.3.1 The gravitational system of inch-pound units is used when dealing with inchpound units. In this system, the pound (lbf) represents a unit of force (weight), while the unit for mass is slugs. The rationalized slug unit is not given, unless dynamic (F = ma) calculations are involved.

    1.4 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.


    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

    D653 Terminology Relating to Soil, Rock, and Contained Fluids

    D1632 Practice for Making and Curing Soil-Cement Compression and Flexure Test Specimens in the Laboratory

    D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction

    D6026 Practice for Using Significant Digits in Geotechnical Data

    E4 Practices for Force Verification of Testing Machines


    ICS Code

    ICS Number Code 93.020 (Earth works. Excavations. Foundation construction. Underground works)

    UNSPSC Code

    UNSPSC Code 11111501(Soil); 30111601(Cement)


    DOI: 10.1520/D1635_D1635M-12

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