通过对混凝土的力学性能、耐久性能、变形性能和热学性能的研究,分析了水胶比、粉煤灰、磷渣等对普通混凝土性能的影响。试验结果表明:不同水胶比条件下,由于磷渣的缓凝作用,早期复掺粉煤灰磷渣混凝土抗压强度低于单掺粉煤灰,后期相差不大,且各龄期劈拉强度和轴拉强度有增高趋势。复掺粉煤灰磷渣混凝土抗渗性、抗碳化性优于单掺粉煤灰混凝土,其早期干缩略低,后期与掺粉煤灰混凝土相当。
Effects of water-binder ratio, fly ash and phosphorus slag on the performance of normal concrete were studied by researching me- chanical property,durability,deformation properties and thermal property of concrete.The experiment indicated that:under the different wa- ter-binder ratio only, due to the setting retarding effect of phosphorus slag powder, the early strength of mixed phosphorus slag and fly ash was lower than only mixed fly ash, but the long-term strength was little difference between the two.The splitting and axial tensile strength,imperme- ability and carbonation resistance of mixed phosphorus slag and fly ash are higher in each age, but the early shrinkage was lower.With the exten- sion of curing ages,the shrinkage was similar to mixed fly ash.