AASHTO TP 118-17 (2021) PDF Download
Standard EN Sample
Standard Method of Test for Characterization of the Air-Void System of Freshly Mixed Concrete by the Sequential Pressure Method
Also Known As:
The AASHTO TP 118-17 (2021) standard outlines a procedure for determining the air content and system air metric (SAM) number of freshly mixed concrete. This is done by observing the change in volume of the concrete when subjected to sequential changes in test pressure.
The standard provides guidelines for performing the test, including the apparatus and equipment required. It specifies that the test should be conducted with a pressure chamber, which is used to apply a series of pressure increments to the concrete sample. The change in volume of the concrete is then measured and recorded.
The air content of the concrete is determined by calculating the volume of air voids in the sample, while the SAM number is a measure of the air-void system characteristics of the concrete. The SAM number provides information on the spacing, size, and distribution of air voids in the concrete, which is important for assessing the durability and frost resistance of the material.
| Language(s) | English |
| File Size | 1.5 MB |
