ACI Concrete Oral Exam Questions and Tests with complete solutions | Verified & Updated 2024

ACI Concrete Oral Exam Questions and Tests with complete solutions | Verified & Updated 2024 What must occur before a sample of concrete can be taken from a revolving drum mixer? - Answer ️️ -All Of The Water Must Be Added To The Mixer Describe the different procedures that can be used to collect a sample of concrete from a stationary or revolving drum mixer. - Answer ️️ -Repeatedly Pass A Receptacle Through The Entire Discharge Stream Completely Divert The Discharge Stream Into A Sample Container What are the required steps for collecting a sample of concrete from a stationary or revolving drum mixer? - Answer ️️ -Collect Two Or More Portions Of Concrete Take The Portions At Regularly Spaced Intervals Take The Portions From The Middle Of The Batch Describe the procedure for collecting a sample of pavement concrete deposited on grade. - Answer ️️ -Discharge The Contents Of The Paving Mixer Obtain Samples From At Least Five Different Portions Of The Pile What is the minimum size for a sample when strength test specimens are to be molded? - Answer ️️ -28 L (1 C.) What is the maximum allowable time between obtaining the first and final portions of the composite sample? - Answer ️️ -15 Minutes What is required after the concrete sample has been transported to the place where tests are to be