ACI Certification Practice Exam Questions and Answers 100% Pass

ACI Certification Practice Exam Questions and Answers 100% Pass For 4x8 cylinders, how many layers and rod strokes to properly consolidate the concrete? - Answer- 2 layers, 25 strokes For 6x12 cylinders, how many layers and rod strokes to properly consolidate the concrete? - Answer- 3 layers, 25 rod strokes After rodding each layer, the sides of the molds should be tapped 10-15 times with a tapping rod? T/F - Answer- False It should be done with a rubber mallet When rodding the second and/or third layers, the rod must go through the current ;layer and penetrate the previous layer approximately 1" - Answer- True While rodding the top layer and the concrete becomes low, additional concrete must be added before the 25th stroke - Answer- True A tamping rod, flow, or trowel can be used to produce a smooth flat level surface on top of the cylinders - Answer- Tamping rod, flow, trowel, all the above All of the above is correct When a strength specimen is used for acceptance testing, quality control testing, or trial batching a mix design, which type of curing method should be used - Answer- Standard lab cure