The Cee 3030 Construction Materials Class Mixed Concrete With Varying Water Cement Ratios
On March 8th, 2016 the teams mixed concrete with a 0.4 water cement ratio. In addition, each team was assigned an additive to add to the concrete mix. One team per section was assigned 7.5 mL of water reducer, 15.0 mL or water reducer, 7.5 mL of water reducer and 22.1 grams of fiber, and 15 mL of water reducer and 44.2 grams of fiber. The concrete was molded into three, 3” diameter by 6” height cylinders and one 6” diameter by 12” height cylinder. Each team also tested the concrete mix for workability by a slump test and air entrainment by an air entrainment test. Over the next 28 days the cylinders were tested for compressive strength, f’c, unit weight, and resistivity.