不同掺量粉煤灰轻骨料混凝土的强度试验研究

Experimental Study on Strength of Lightweight Aggregate Concrete with Different Contents of Fly Ash

以内蒙古东部区富含天然浮石为粗骨料,通过在轻骨料混凝土中掺入粉煤灰0%、15%、20%、30%、45%、60%的试验中,将其3 d、7 d、14 d、21 d、28 d、90 d的抗压强度进行对比;并研究冻融循环作用下,对不同粉煤灰掺量的轻骨料混凝土的耐久性和抗冻性影响,得到对于天然浮石轻骨料混凝土,20%为最佳粉煤灰掺量。

To study the durability and freezing resistance of the lightweight aggregate concrete（LAC） that use the natural pumice from the east Inner Mongolia as coarse aggregate under freeze-thaw cycles.This paper tests and compares these compressive strength of LAC with 0%,15%,20%,30%,45% or 60% fly-ash in 3 d,7 d,14 d,21 d,28 d,and 90 d.The result suggests that the natural pumice LAC with 20% fly-ash is the best choice.