ASTM C1825 - 18e1

    Standard Guide for Developing Specifications for Masonry Units

    Active Standard ASTM C1825 | Developed by Subcommittee: C15.12

    Book of Standards Volume: 04.05


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    Significance and Use

    5.1 This guide is intended to provide guidance for developing ASTM unit specifications for nontraditional masonry units. The user of this guide is encouraged to review the Form and Style for ASTM Standards as well as the referenced unit specifications and test methods. Note that not all items presented in this guide are necessarily applicable or appropriate in all cases.

    5.2 ASTM specifications are not intended for proprietary products, but rather for a class of products that multiple manufacturers can produce, and are intended to ensure performance using those constituent materials or processes. Therefore, specific attributes that only relate to a specific brand should be avoided.

    5.3 This guide does not identify the complete range of considerations that may be required for a masonry unit manufactured using a non-traditional material. Traditional masonry units possess intrinsic properties that are commonly associated with masonry including but not limited to strength, fire resistance, durability, thermal and acoustical attributes.

    5.4 Non-traditional masonry unit products may meet all the physical property requirements of an existing ASTM standard unit specification, when tested using ASTM standard test methods. Nevertheless, performance of non-traditional masonry units is not assured since the intrinsic properties that are associated with traditional masonry units and assemblies may not be specifically evaluated through testing for specification compliance. Additionally, compliance with the physical properties in existing unit specifications does not mean that non-traditional units are in compliance with those specifications as traditional unit standards are only applicable to units produced with those materials and processes defined within that specification (refer to Appendix X1).

    1. Scope

    1.1 This guide provides general guidance for developing ASTM unit specification for masonry units manufactured with constituent materials, manufacturing methods, and combinations thereof, that are not included in a current ASTM standard. This guide shall not be construed as permitting the use of a product conflicting with requirements of the governing building code.

    1.2 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.3 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

    C1072 Test Methods for Measurement of Masonry Flexural Bond Strength

    C1180 Terminology of Mortar and Grout for Unit Masonry

    C1232 Terminology for Masonry

    C1314 Test Method for Compressive Strength of Masonry Prisms

    C1363 Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus

    C1601 Test Method for Field Determination of Water Penetration of Masonry Wall Surfaces

    D3273 Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber

    D3345 Test Method for Laboratory Evaluation of Solid Wood for Resistance to Termites

    E84 Test Method for Surface Burning Characteristics of Building Materials

    E90 Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements

    E119 Test Methods for Fire Tests of Building Construction and Materials

    E136 Test Method for Behavior of Materials in a Vertical Tube Furnace at 750C

    E514 Test Method for Water Penetration and Leakage Through Masonry

    G154 Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials


    ICS Code

    ICS Number Code 91.080.30 (Masonry)

    UNSPSC Code

    UNSPSC Code


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

    DOI: 10.1520/C1825-18E01

    Citation Format

    ASTM C1825-18e1, Standard Guide for Developing Specifications for Masonry Units, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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