Study on the Influence of Basic Properties of Vegetated Pervious Concrete
Different water-cement ratios,amounts of cementitious materials,aggregate sizes,and blending ratios of ordinary Portland cement and sulfoaluminate cement have varying impacts on the alkalinity,porosity,strength,and permeability of vegetated pervious concrete. Experimental results indicate that the compressive strength of vegetated pervious concrete decreases as the aggregate size increases and increases as the amount of cementitious materials increases. At the same time,compressive strength rises as the water-cement ratio decreases. The amount of cementitious materials is the primary factor affecting porosity,followed by aggregate size,while the water-cement ratio and the blending ratio of ordinary Portland cement and sulfoaluminate cement have minimal impact on porosity. Aggregate size and the blending ratio of ordinary Portland cement and sulfoaluminate cement have a significant influence on alkalinity,while the water-cement ratio and the amount of cementitious materials have very limited effects on alkalinity. Changes in aggregate size and the amount of cementitious materials have a greater impact on permeability,while the blending ratio of ordinary Portland cement and sulfoaluminate cement and the water-cement ratio have little influence on the permeability of vegetated pervious concrete.
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