多孔混凝土植生性能试验研究  

Studies on the suitable of porous concrete for planting

作　　者：蒋昌波[1,2] 刘易庄[1] 向泰尚[1,2] 肖政[1,2] 

机构地区：[1]长沙理工大学水利工程学院,湖南长沙410004 [2]长沙理工大学水沙科学与水灾害防治湖南省重点实验室,湖南长沙410004

出　　处：《混凝土》2014年第5期152-156,共5页Concrete

基　　金：交通部西部交通建设科技项目(20113287461690;20113283631180);广东省交通运输厅科技项目计划重大项目(2012-01-002);湖南省"十二五"水利工程重点学科资助计划;湖南省研究生科研创新项目资助(CX2013B372)

摘　　要：为了深入研究植生型多孔混凝土的适生性,根据水灰比、骨料级配和孔隙率的不同拌制出27组多孔混凝土制品。自然养护28d后,在其上植生狗牙根,观察狗牙根的表征生长情况,并记录其覆盖率及株高。结果表明,多孔混凝土的适生性不仅取决于孔隙率,同时也受粗集料粒径以及水灰比的影响。孔隙率越大,粗集料粒径越大越有利于狗牙根的生长。在低孔隙率(20%、25%)情况下,狗牙根的覆盖率随水灰比的增大而增大,但在高孔隙率(30%)情况下,狗牙根的覆盖率随水灰比的增大先增大后减少。In order to further research the suitability of porous concrete for planting,this paper studied 27 kinds of porous concrete which have different water-cement ratio,aggregate gradation and void ratio.Alter 28 days nature curing,bermudagrass were planted on the porous concrete.By observing the bermudagrass growth situation and recording its coverage rate and height on each porous concrete this paper found that the suitability of porous concrete not only depends on void ratio ,but also on the coarse aggregate size and water-cement ratio.Bermudagrass grow better under a larger void ratio and a bigger coarse aggregate size condition.In the low void ratio（ 20%, 25%） conditions, bermudagrass coverage ratio increases with the increase of water-cement ratio, while in the high void ratio （30%） conditions, bermudagrass coverage ratio first increases and then decreases with the increase of water-cement ratio.

关 键 词：多孔混凝土 狗牙根 孔隙率 覆盖率 

分 类 号：TU528.2[建筑科学—建筑技术科学]