This study was supported by National Natural Science Foundation of China. Project No. 51578080, Hunan Provincial Natural Science Foundation of China. Project No. 12JJ3050 and Open Fund of Key Laboratory of Special Environment Road Engineering of Hunan Province (Changsha University of Science and Technology). Project No. kfj110402.
机构署名:
本校为第一且通讯机构
院系归属:
交通运输工程学院
摘要:
Porous concrete due to its high porosity and permeability is considered as an alternative to tunnel pavements base. Based on orthogonal test method, an optimized coarse aggregates gradation with good packing state and uniformity is put forward. Three factors of cement content, sand ratio and water-cement ratio are considered in an orthogonal test with four levels adopted in every factor. The results show the most effective factor affecting 7-day compression strength is cement content, then sand ratio and water-cement ratio. The most effective f...