题目内容
Vibrators are used to consolidate the concrete to reduce ______ in the mix.
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______ is the most common method used in the field to determine the air content of cement concrete.
Workability of cement concrete can be measured by ______ test and ______ test.
The four chemical components of asphalt are asphaltene, aromatic, ______ , and ______ .
Someone wants to test the high temperature grade of an asphalt binder, the DSR experiment was conducted and the results were shown as below. Could you help determine the high temperature grade of the asphalt binder?Tests52゜C58゜C64゜C70゜CG* (kPa)δ(°)G* (kPa)δ(°)G* (kPa)δ(°)G* (kPa)δ(°)Original asphalt DSR1.23821.10851.02870.8589RTFO aged DSR2.60782.35802.21851.8087
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