石渣粉砌块的改性试验研究

摘要

石渣粉砌块是利废、清淤且成本低廉的建筑材料，其填充墙容易开裂的主要原因在于石渣粉砌块的收缩变形比较大。掺加减缩剂、聚丙烯纤维和膨胀剂均能对石渣粉砌块分别起到减缩、限缩和补偿收缩的效果，双掺聚丙烯纤维与膨胀剂更有利于提高砌块填充墙的整体抗裂效果。%Stone slag powder block is a kind of low cost recycling building material. But its larger shrinkage results in cracks of the block wall. Through adding reducing agent, polypropylene fiber and expansion agent in raw material,its shrinkage can be reduced, so that the crack resistance of block wall can be improved.