Concrete Deputy Inspector Training Exam And Correct Answers.

As per ASTM C31 6,000 - PSI concrete test specimens cast on site may be temporarily stored under which of the following conditions? - Answer Temperature rand between 68 and 78 defreesF When the specifications for slump are not written as "not to exceed" requirement, the tolerance permitted for a specified slump of 2in is plus or minus - Answer 1-1/2 The air content of air entrained, when sampled from a truck mixer at the point of discharge, shall be within a tolerance of (plus or minus) ______ percent of the specified air content. - Answer 1.5 Per ASTM C 31, Specimens shall not be transported from field to lab before how many hours - Answer 8 hours The slump test is used to measure the ________ of concrete. - Answer Consistency Field- cast test specimens not transported to the testing lab prior to the age ___ hours shall be demolded prior to transportation - Answer 8 Samples of concrete are being taken from revolving drum truck, for making test specimens to determine compliance with specification requirements. - Answer At 2 or more spaced intervals during discharge Before concrete is placed, reinforcing bars shall be free from... - Answer Mud, oil or other nonmetallic coatings. In a freeze-thaw environment, durability of hardened concrete is increased by the use - Answer Calcium chloride When field made concrete test cylinders are to determine compliance with specification requirements, the maximum temperature for initial storing in the field after molding is_____ degrees - Answer 80