再生细骨料对蓄水层渗蓄性能的影响

Effect of Recycled Fine Aggregate on Permeability of Layer

为了给海绵城市建设中蓄水层使用再生砖骨料提供科学依据,以进一步推动建筑垃圾资源化的发展,通过改变单粒级细骨料蓄水层的粒径与再生骨料掺量,探究了各种因素对骨料蓄水层蓄水能力及透水能力的影响。结果表明,当骨料粒径减小时,蓄水层蓄水能力因骨料间隙储水能力的增加而增大;当再生骨料掺量增加时,蓄水层蓄水能力因骨料自身吸水能力的增加而增大;在此过程中,蓄水层的透水能力呈现相反的规律,因此在需要综合考虑透水与蓄水能力的海绵城市设施中应用再生骨料蓄水层时需按要求对骨料粒径以及再生骨料掺量进行调整。

In order to provide a scientific basis for the use of recycled brick aggregates in the construction of aquifers in sponge cities,to further promote the development of construction waste resources.In this paper,the effects of various factors on the water storage capacity and water permeability of aggregate aquifers were investigated by changing the particle size of the single-grained fine aggregate aquifer and the amount of recycled aggregate.The results show that when the aggregate particle size decreases,the water storage capacity of the aquifer decreases due to the decrease of the water storage capacity of the aggregate;when the amount of recycled aggregate increases,the water storage capacity of the aquifer is due to the aggregate itself.The water absorption capacity increases with the increase of water absorption capacity.In this process,the water permeability of the aquifer is in the opposite law,so it is necessary to apply the aquifer in the sponge city facility that needs comprehensive consi-deration of the permeability and water storage capacity.The particle size and the amount of recycled aggregate are adjusted.