CE 3700 Chapter : Lab Report 4
Document Summary
The purpose of this test is to determine the difference in ultimate compressive strengths pertaining to different w/c ratios. Using cylindrical concrete samples the compressive strength was measured using the destructive testing method. This test is useful in finding out what water to cement ratio is best for highest compressive strength. This data is used to design the proper concrete mix in compliance with specification. The type of cement used was a type i portland cement with a w/c ratio of 0. 45 for group 1, 0. 5 for group 2, and 0. 55 for group 3. Fine aggregate, course aggregate, and tap water were used for the mixtures, in compliance with astm c150, and astm. First the course aggregate and two thirds of the total calculated water amount was placed into the concrete mixer to get the course aggregate to the ssd condition. Then the fine aggregate, concrete, and remaining water was placed into the mixer.
