ASTM C1019-20 PDF Download

The ASTM C1019-20 standard is a test method that outlines procedures for sampling and testing grout used in masonry construction. Grout in masonry is a fluid mixture of cementitious materials and aggregate with a high water content for ease of placement.

The standard emphasizes the importance of removing excess water from grout specimens to provide compressive strength test results that are more indicative of the grout's strength in the wall. To achieve this, molds are made from masonry units with the same absorption and moisture content as those used in the construction process.

The test method serves two purposes: it can be used to help select grout proportions by comparing test values, or it can be used as a quality control test to ensure uniformity in grout preparation during construction.

It's important to note that while this test method simulates the absorption conditions experienced by grout in the wall, it does not exactly reproduce the physical exposure condition and curing of the grout. Additionally, test results obtained from grout specimens taken from a wall should not be compared to results obtained using this test method.