【摘 要】
：
The effects of the proportion of fine aggregate, the maximum size of the aggregate and the proportion of the 9.5mm to 4.75mm particle in the coarse aggregate on
【机 构】
：
School of Material Science and Engineering,Research Institute of Highway
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
【基金项目】
：
The Opening Fund of the Key Laboratory of Silicate Material Science and Engineering, Ministry of Education
论文部分内容阅读
The effects of the proportion of fine aggregate, the maximum size of the aggregate and the proportion of the 9.5mm to 4.75mm particle in the coarse aggregate on the properties of the porous concrete are investigated. Results indicate that the porous concrete with a cement dosage only 150kg/m3 has high strength and satisfying permeability when the aggregate has a passing percentage of 4.75mm around 10% to 5%, with the increase of the maximum size of the aggregate, the strength of the porous concrete decreases and the permeability increases. When the proportion of the 9.5mm to 4.75mm particle in the coarse aggregate is about 20%, there are no interference among the particles by Weymouth theory, the strength of the pervious porous concrete reaches the peak value. The optimum continues gradation limit of the aggregate for porous concrete pervious road base material is recommended according to the theoretical calculation and experimental results.
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