Astm C642 Density Absorption Voids In Hardened Concrete

Now comes the counter-intuitive part. To find the voids, you must fill them. The dry sample is placed in a water bath at 21 ± 2°C (70 ± 4°F) for at least 48 hours. But that’s not enough to reach full saturation. Air gets trapped in fine pores.

ASTM C642 is a widely used standard test method for determining the density, absorption, and voids in hardened concrete. This test method is essential for evaluating the durability and performance of concrete structures, as it helps to identify potential issues with the concrete's composition, placement, and curing. astm c642 density absorption voids in hardened concrete

The precision and bias of the test method are as follows: Now comes the counter-intuitive part