超硫酸盐水泥植生多孔混凝土性能试验研究

选用一种低碱度超硫酸盐水泥制备了多孔混凝土,研究了不同掺量脱硫石膏对多孔混凝土pH值和力学性能的影响,分析了狗牙根、高羊茅、早熟禾、黑麦草和白喜草在多孔混凝土中的植生情况。结果表明:当脱硫石膏掺量为15%～20%,P·O 52.5水泥掺量为5%时,多孔混凝土的抗压强度最高;水胶比为0.3时,多孔混凝土的施工性和力学性能最优;脱硫石膏、P·O 52.5水泥和水胶比对多孔混凝土的pH值影响较小。制备的多孔混凝土pH值较低,能够满足植物生长需求,其中,高羊茅和白喜草在多孔混凝土中的植生性能最佳。

Experimental Study on the Performance of Super Sulphated Cement Eco-porous Concrete

The super sulfate cement with low alkalinity was selected to prepare the eco-porous concrete,the effects of different content of desulfurization gypsum on the pH value and mechanical properties of eco-porous concrete were studied,and the planting performance of bermudagrass,tall fescue,kentucky bluegrass,ryegrass and bahia grass in eco-porous concrete was analyzed.The results show that the compressive strength of eco-porous concrete is the highest when the content of desulfurized gypsum is 15%~20%and the content of P·O 52.5 cement is 5%.When the water-binder ratio is 0.30,the workability and mechanical properties of eco-porous concrete are optimal.The content of desulfurized gypsum,P·O 52.5 cement and water-binder ratio have little influence on the pH value of eco-porous concrete.The prepared eco-porous concrete has a low pH value and can meet the needs of plant growth.Among them,tall fescue and bahia grass have the best planting performance in eco-porous concrete.