ASTM C940-16 PDF Download

ASTM C940-16 is a standard test method that measures the expansion and bleeding properties of freshly mixed grouts used in preplaced-aggregate concrete (PA concrete) and cementitious post-tensioning tendon grouts. The purpose of this test is to determine the behavior of the grout when it is in its fluid state.

The test involves preparing a sample of the grout and measuring its initial volume. The sample is then allowed to sit undisturbed for a specified period of time, during which any expansion or bleeding of the grout is observed. The expansion is measured as a percentage increase in volume, while the bleeding is measured as the amount of water, expressed as a percentage of the total volume of the grout, that is expelled from the sample.

This test method is particularly valuable in assessing the quality and performance of grouts that will be used in PA concrete and cementitious post-tensioning tendon grouts. It provides important information about their ability to withstand pressure and support the surrounding concrete or structure. The results of this test can be used to make informed decisions regarding the suitability of different grouts for specific applications, ensuring that they meet the necessary performance specifications.