2010年12月31日 · 1.1 This test method covers determination of the air content of freshly mixed concrete from observation of the change in volume of concrete with a change in pressure.

2023年9月12日 · Significance and Use of ASTM C231. This test’s purpose is to get the air content of a sample of concrete using a pressure meter. In the meter, you have a known volume of air …

ASTM Test Methods 3. Significance and Use 3.1 This test method covers the determination of the air content of freshly mixed concrete. The test determines the air content of freshly mixed …

2023年5月17日 · This standard is issued under the Þxed designation C231/C231M; the number immediately following the designation indicates the year of original adoption or, in the case of …

You'll learn about entrained air and how to use the air meter.

Describe the Air Meters, Types A and B, and related apparatus required for determination of air content by the pressure method. Recall the steps for determination of aggregate correction …

2009年7月1日 · Scope 1.1 This test method covers determination of the air content of freshly mixed concrete from observation of the change in volume of concrete with a change in …

astm c231/c231m-24 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method 1.1 This test method covers determination of the air content of freshly mixed …

ASTM C231 outlines the procedure for determining the air content of freshly mixed concrete using a pressure meter. This method is based on Boyle’s Law, which states that the pressure of a …

This test method covers determination of the air content of freshly mixed concrete from observation of the change in volume of concrete with a change in pressure. ASTM C231 is …