High Performance of Stone Chippings Concrete with High Fine Content

In order to make full use of stone chippings, alleviate the contradiction of increased demand and supply shortage of river sand. On the basis of the method of dense aggregate packing, this paper explores a way utilizing stone chippings with high fine content(more than 10% fine content), poor graded crushed stone, grade II flyash and S95 slag powder to prepare HPC with stone chippings 100% replacing river sand. The experiment results show that this mix design method is feasible, and its designed concrete has good workability, high dosage of mineral admixtures, high strength, high chloride ion penetration resistance, low cement content, low cost and so on.