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The method of determining air content of concrete containing lightweight aggregate is the pressure method ☑: False. Relatively dense Is the following statement true or false? When making a test cylinder from concrete being used in construction, the field technician must also measure the slump of the concrete. ☑: True While the technician is checking the slump of the concrete, there is a decided falling away or shearing off of concrete from one side of the sample. What should the technician do? ☑: Disregard the test and retest on another portion of the sample. Preparation of specimens for transport includes: ☑: Determination that at least 8 hours has elapsed since final set
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