无砂大孔混凝土的植生性与抗冲性试验研究

Experimental study on plant-growing properties of macroporous concrete without sand

通过试验分析水灰比、水泥用量和骨料品种对无砂大孔混凝土性能的影响,提出了用卵石作粗骨料,水灰比取0.4进行配合比设计,可以使无砂大孔混凝土获得较好的植生性能。以此为基础优选配合比,进行无砂大孔混凝土后期强度、抗冲耐久性和植被模型试验。研究结果表明,这种混凝土具备植被生长的基本条件,可以在堤防护岸工程建设中推广应用。

By analyzing the effect of water-cement ratio, amout of cement, and type of coarse aggregates on properties of concrete, it puts forward that when carrying out the mix proportion design of the concrete, using gravels as aggregate, setting the water-cement ratio as 0.4 can help the maeroporous concrete without sand acquire satisfying plant-growing properties.Based on this idea, experiments to the later period strengths, the erosion resistance property and the vegetation sample of concretes are tried out.Finally, the result of this series of experiments shows that the macroporous concrete without sand possesses necessary conditions for plants to survive and grow up.It is suggested that macroporous concrete without sand can be applied to harness rivers.