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What are the tests that can be performed on fresh concrete specimens?
In general, the testing of freshly mixed (as opposed to hardened) concrete should be representative. This means that the sampling should follow ASTM C172 specification. Examples of tests that follow representative sampling include slump testing, temperature measurement, unit weight and yield, air content tests, strength tests, and water/cement ratio.
Additional tests that can be performed on fresh concrete include time of setting, accelerated curing, chloride content, and bleeding of concrete.
ASTM C143 (tests the consistency of the concrete mixture; is also a measure of the stiffness of the mix)
For more information, see FATQ "What does the slump test tell me about modern concrete?"
ASTM C1064 (should be completed within 5 minutes after obtaining the sample)
Unit Weight and Yield
Air Content Test
Cement and Water Content (Water/Cement Ratio)
Time of Setting
NRMCA method (see NRMCA Technical Information Letter No. 437)
Bleeding of Concrete
For more information, consult the following resources: