轻骨料透水混凝土的研究

Research on Lightweight Aggregates Pervious Concrete

用粘土陶粒作为粗骨料、膨胀珍珠岩作为细骨料和其他胶凝材料(水泥和粉煤灰)通过人工搅拌的方法配制轻骨料透水混凝土,研究不同的水泥、粉煤灰和细轻骨料用量对混凝土抗压强度、孔隙率、透水系数、pH值及表观密度等性能的影响。结果表明,随着水泥、粉煤灰和细轻骨料用量的增加,轻骨料透水混凝土的强度增加、表观密度增大,而孔隙率、透水系数会降低,pH值变化不大。

The lightweight aggregates pervious concrete is prepared by handing mixing,which is used by the ceramisite clay as coarse lightweight,the expand perlite as fine lightweight aggregates,fly ash and ordinary portland cement.The effects of various dosages of cement,fly ash and fine lightweight aggregates on the compressive strength,porosity,permeability coefficient,pH value and apparent density of prepared concrete are researched.The results show that with the dosage increase of cement,fly ash and fine lightweight aggregates,strength and apparent density of concrete increase,but the porosity and permeability coefficient decrease,and the pH value changes a little.