毛乌素沙地砂替代率对高强混凝土抗压强度实验研究

Influence of desert sand replacement ratio on the compressive strength of high strength concrete from Mu Us desert

通过单因素实验,在水胶比、砂率和外加剂掺量不变的情况下,研究不同沙地砂替代率对高强混凝土抗压强度的影响规律,并利用其应力-应变曲线进一步研究沙地砂替代率对高强混凝土抵抗变形能力和韧性的影响。研究结果表明,沙地砂替代建筑用砂配制高强混凝土是可行的,沙地砂高强混凝土中沙地砂的最优替代率为0%~40%。

Under the condition of water-binder ratio, sand ratio and admixture content unchanged, through single factor experiment, the influence of desert sand replacement ratio on the compressive strength of high strength concrete is studied, the stress-strain curve of which is also attained to study the effect of desert sand replacement ratio on the deformation capacity and ductility of high strength concrete. The results show that it is practicable to use desert sand to mix desert sand high strength concrete. The range of desert sand replacement rate is from 0% to 40%.