ASTM C185
Full Name
ASTM C185 – Standard Test Method for Air Content of Hydraulic Cement Mortar
Scope
ASTM C185 covers the determination of the air content of hydraulic cement mortar under specific conditions. The test helps to evaluate the air-entraining potential of hydraulic cement, which is important for its durability and performance in concrete applications.
Specifically, the standard addresses:
- Mortar preparation: it outlines the procedure for preparing a mortar sample using the hydraulic cement under test and standard sand, with a specific water content to achieve a desired flow.
- Air content measurement: the standard describes the use of a volumetric method to measure the air content of the prepared mortar sample.
- Apparatus: it specifies the apparatus required for the test, including a flow table, flow mold, caliper, cylindrical measure, and other accessories.
- Calculations: it provides formulas for calculating the air content based on the measured volume of the mortar and the volume of the cylindrical measure.
- Interpretation: the results are used to determine if the hydraulic cement meets the air-entraining or non-air-entraining requirements of the applicable specification.
However, ASTM C185 does not cover:
- Air content of concrete: this test is specifically designed for hydraulic cement mortar and does not directly measure the air content of concrete.
- Factors influencing air content in concrete: the air content of concrete is influenced by various factors other than the air-entraining potential of the cement, such as the mixing process, aggregate properties, and admixtures.
Overall, ASTM C185 provides a standardized method for assessing the air-entraining potential of hydraulic cement, which is crucial for ensuring the quality and performance of concrete in various applications.
ASTM C185 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C185 standard.
Contact us today to learn more about our testing capabilities and how we can support your business.
Resources
Keywords
air content; hydraulic cement mortar; volumetric method; flow table; flow determination; mixing water; standard sand; measure