Methods 

 

Three molds were especially made for prisms of 40mm ´ 40mm ´ 160mm, cylinders of 150 mm diameter x 300 mm height and cubes of 150*150*150 mm.  Dry coarse aggregate, sand and cement were mixed mechanically for one minute to ensure uniformity of the mix, then 50% water with the graphene and water reducing agent were added and mixed thoroughly. Then the rest of water was added, and rotation was continued to spread the materials homogenously. Mixing was continued until a uniformly color is obtained. 

 

After the molds were compacted, the specimens were covered with wet burlap for 24 hours. After 24 hours the sides of the form were stripped away, and the prisms were totally submerged in water up to the testing time at 25°C. A compression testing machine was used. Testing Apparatus consists of a Load Frame 50kN (Tons) capacity. The compression testing machine was used to apply vertical static load with standard rating. All specimens were tested for the compressive and flexural strength. The tested specimens were tested after 7, 28 and 56 days