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Significance and Use
4.1.1 The material to be tested is placed in the mold in a fluid or plastic state. As the material makes a transition to a solid state, it adheres to and captures the end studs.
4.1.2 The linear shrinkage measured is the change in length that occurs after the material is rigid enough and strong enough to move the studs.
4.2 This test method can be used for research purposes to provide information on linear changes taking place in the test materials. Other dimensional changes may occur that do not manifest themselves as changes in length.
1.1 This test method covers the measurement of the linear shrinkage during setting and curing and the coefficient of thermal expansion of chemical-resistant mortars, grouts, monolithic surfacings, and polymer concretes.
1.2.1 The change in length after curing is measured and used to calculate shrinkage.
1.2.2 The change in length at a specific elevated temperature is measured and used to calculate the coefficient of thermal expansion.
1.4 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C287 Specification for Chemical-Resistant Sulfur Mortar
C490 Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete
C904 Terminology Relating to Chemical-Resistant Nonmetallic Materials
ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)
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ASTM C531-00(2012), Standard Test Method for Linear Shrinkage and Coefficient of Thermal Expansion of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top