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Significance and Use
This test method is intended to evaluate the drying shrinkage characteristics of a given unit. The results of this laboratory method are considered in determining concrete masonry crack control provisions.
Note 1—The testing laboratory performing this test method should be evaluated in accordance with Practice C1093.
1.1 This test method covers a routine standardized procedure for determining the linear drying shrinkage of concrete masonry units or related concrete units under specified accelerated drying conditions.
1.2 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.
1.3 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.
C490 Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete
C1093 Practice for Accreditation of Testing Agencies for Masonry
ANSI StandardB94.11M—1993 Twist Drills Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
ICS Number Code 91.100.30 (Concrete and concrete products)
ASTM C426-10, Standard Test Method for Linear Drying Shrinkage of Concrete Masonry Units, ASTM International, West Conshohocken, PA, 2010, www.astm.orgBack to Top