Study on the Mechanical Properties of Ecological Engineeredcementitious Composite (ECO-ECC) Which Contained PVA Fiber and recycled Brick Powder Exposed To Low Temperature

摘要

there are several experiments were studied about the Engineering Cementitious Composite (ECC) after exposure to low and high temperature that focus on Mechanical Properties of ECC, included tensile strength, compressive strength, toughness, young modulus, ductility, flexural strength, durability of ECC after exposure to low and high temperature. But there is no study about Mechanical Properties of Ecological Engineering Cementitious Composite (ECO-ECC) which contained Recycled Brick Powder after exposure to low temperature.In this paper, we were studied about compressive strength, flexural strength and bending strength of ECC that was contained PVA fiber and Clay Break after exposure to low temperature. In this study, the compressive test, flexural test and bending test according to the China Testing Material was carried out two type of concretes: the first one is the normal concrete which use the natural materials and PVA fiber, and the second is the concrete was contained PVA fiber and the recycled material with four difference type of volume combination at 25%, 50%, 75% , and 100% of Clay Break and used PVA fiber equal 1.75% of cement and fly ash. Our specimens were putted in low temperature until the testing day (7days ) after demold, and using low temperature are 0 oC , 10o ? C , 20o ? C , and 30o ? C . PVA played in the important role for increasing strength to the specimen.