MA型轻混凝土的力学性能

MECHANICAL PERFORMANCE OF MA LIGHT CONCRETE

德国通过采用混合型集料的配料方案,以筒压强度较低的普通粘土陶粒研制成功了低表观密度、高性能的轻集料混凝土(MA型高性能轻混凝土),它可现浇或预制,且可泵性好、施工方便。试验研究表明,在其中加入碎石可抵御微裂纹的扩展;加入陶料可明显改善集料与砂浆界面的粘结牢度;加入矿渣和粉煤灰,可使混凝土孔隙率下降、强度增长。

The mixed aggregate plan was adopted by Germany to develop light aggregate concrete(MA high performance light concrete)with low apparent density,high performance successfully on the basis of normal clay.It can be made by the way of cast-in-place or prefabricate.It is easy to be pumped and constructed.The research results show that this concrete with some gravel in it can prevent the expansion of minor crack.Low porosity ratio and improved strength of concrete can be made by adding slag and pulverized fuel ash.