ACI concrete field Grade 1 Exam Questions and Answers

ACI concrete field Grade 1 Exam Questions and Answers The elapsed time between obtaining the first and final portion of samples that will be used to fabricate a composite sample shall not exceed ———- - Answer- 15 minutes The individual samples shall be combined and remixed with a scope the minimum amount necessary to ensure uniformity. True or false? - Answer- False Start testing for slump, temperature, and air content within ______ minutes after obtaining the final portion of the sample. - Answer- 5 Start molding strength specimens within ____ minutes after fabricating the composite sample. - Answer- 15 The minimum size of the sample when making strength specimens is ____ cubic foot. - Answer- 1 When sampling from paving mixtures, wait until contents of the mixer have been discharged and sample from at least ____ portions of the pile. - Answer- 5