干旱区生态环境知识资源中心

In order to replace the natural sand with Fiber Engineered Cementitious Composites (PVA-ECC) in desert sand, the PVA-ECC of desert sand was put forward. Four factors, namely, water-cement ratio, fly ash content, PVA fiber content and desert sand substitution, The four-level orthogonal test was used to analyze the compressive properties, and flexural properties of desert sand PVA-ECC of 7d aged. The effects of each dosage on the PVA-ECC strength and ductility of desert sand were analyzed. Impact. The results show that the substitution rate of desert sand has little effect on the compressive strength, splitting tensile strength and flexural strength of desert sand PVA-ECC, and the water-cement ratio and fly ash content are the most important factor of compressive strength.