Standard Test Method for Sampling and Testing Grout
Grout used in masonry is a fluid mixture of cementitious materials and aggregate with a high water content for ease of placement.
During construction, grout is placed within or between absorptive masonry units. Excess water must be removed from grout specimens in order to provide compressive strength test results more nearly indicative of the grout strength in the wall. In this test method, molds are made from masonry units having the same absorption and moisture content characteristics as those being used in the construction.
This test method is used to either help select grout proportions by comparing test values or as a quality control test for uniformity of grout preparation during construction.
The physical exposure condition and curing of the grout are not exactly reproduced, but this test method does subject the grout specimens to absorption conditions similar to those experienced by grout in the wall.
Note 2—Test results of grout specimens taken from a wall should not be compared to test results obtained with this test method.
1.1 This test method covers procedures for both field and laboratory sampling and compression testing of grout used in masonry construction. Grout for masonry is specified under Specification C 476.
Note 1—The testing agency performing this test method should be evaluated in accordance with Practice C 1093.
1.2 The values stated in inch-pound units are to be regarded as the 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.
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