Figure 13-26.—Simplified flow chart showing recovery and refining of petroleum asphaltic materials.
Other Concrete Strength Tests
805) and the pullout test method (ASTM C 900), also
The compressive and flexural strength tests that you
are used.
The rebound method employs a rebound hammer
studied above are the two strength tests that you, as an
EA, are expected to know how to perform. One should
that measures the rebound of a spring-loaded plunger
not gain the opinion, however, that those are the only
striking a smooth concrete surface. A rebound number
ways to determine the strength of hardened concrete.
reading indicates the compressive strength of the
Other methods, such as the rebound method (ASTM C
concrete. In the pullout test, the enlarged end of a steel
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