再生骨料和矿物掺合料对再生混凝土强度的影响

研究了再生骨料取代量和矿物掺合料等因素对再生混凝土强度的影响。结果表明:高品质再生细骨料混凝土的强度高于天然骨料混凝土,且随着再生细骨料取代量的增加而增大;高品质再生粗骨料混凝土的强度接近天然骨料混凝土强度。再生骨料和各种掺合料的适应性比较好,超细矿粉和普通矿粉复掺能够明显提高再生混凝土强度。

THE EXPERIMENTAL STUDY ON STRENGTH OF HIGH-PERFORMANCE RECYCLED CONCRETE

The influences of the recycled coarse and fine aggregate,the replacement rate,mineral admixture,on the strength of high-performance recycled concrete were studied.The results show that:the strength of high-quality recycled fine aggregate concrete is higher than that of natural aggregate concrete,and it increases with the replacement rate.The strength of high-quality recycled coarse aggregate concrete is increase of close to that of the natural aggregate concrete.In the condition of large amount of fly ash,slag and silicon ash are co-doped,the high-performance recycled aggregate concrete with of well work,and well early strength and the late strength of the excellent development can be obtained at the role of super plasticizer.Recycled aggregate well adaptability with various mineral admixtures and super fine slag and the general slag co-doped can significantly increase recycled concrete strength.