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Significance and Use
4.1 This test method provides a means of verifying that masonry materials used in construction result in masonry that meets the specified compressive strength.
4.2 This test method provides a means of evaluating compressive strength characteristics of in-place masonry construction through testing of prisms obtained from that construction when sampled in accordance with Practice . Decisions made in preparing such field-removed prisms for testing, determining the net area, and interpreting the results of compression tests require professional judgment.
4.3 If this test method is used as a guideline for performing research to determine the effects of various prism construction or test parameters on the compressive strength of masonry, deviations from this test method shall be reported. Such research prisms shall not be used to verify compliance with a specified compressive strength of masonry.
Note 1: The testing laboratory performing this test method should be evaluated in accordance with Practice .
4.3.1 includes guidance information for the researcher on aspects of materials, construction, and analysis.
1.1 This test method covers procedures for masonry prism construction and testing, and procedures for determining the compressive strength of masonry, fmt, used to determine compliance with the specified compressive strength of masonry, f ′m. When this test method is used for research purposes, the construction and test procedures within serve as a guideline and provide control parameters.
1.2 This test method also covers procedures for determining the compressive strength of prisms obtained from field-removed masonry specimens.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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.
C67 Test Methods for Sampling and Testing Brick and Structural Clay Tile
C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
C140 Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C143/C143M Test Method for Slump of Hydraulic-Cement Concrete
C144 Specification for Aggregate for Masonry Mortar
C270 Specification for Mortar for Unit Masonry
C476 Specification for Grout for Masonry
C780 Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry
C1019 Test Method for Sampling and Testing Grout
C1093 Practice for Accreditation of Testing Agencies for Masonry
C1532 Practice for Selection, Removal, and Shipment of Manufactured Masonry Units and Masonry Specimens from Existing Construction
C1552 Practice for Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing
C1587 Practice for Preparation of Field Removed Manufactured Masonry Units and Masonry Specimens for Testing
E105 Practice for Probability Sampling of Materials
E111 Test Method for Youngs Modulus, Tangent Modulus, and Chord Modulus
ICS Number Code 19.060 (Mechanical testing); 91.080.30 (Masonry)