长江科学院院报2017，Vol.34Issue(12)：115-121,7.DOI:10.11988/ckyyb.20160800
页岩陶粒植生型多孔混凝土制备与植生试验研究
Shale Ceramsite Porous Concrete for Plant Growing: Preparation and Planting Test
摘要
Abstract
The aim of this research is to study the influence of grain size distribution of shale ceramsite on the bulk density,compressive strength,void ratio and pH value in the internal voids of porous concrete for plant growing.First of all,we set up two groups of grain size distribution of shale ceramsite,and measured the basic physical properties such as stack density,apparent density,void ratio and bibulous rate for mixture proportion design.Furthermore,we added fly ash,compound fertilizer,FeSO4 and vinyl acetate emulsion into yellow brown loam to prepare modified soil,which was further mixed with humus and vermiculite powder in a proportion of 2∶2∶1 to obtain planting substrate flurry of a fluidity of 210-240 mm.Then we carried out planting tests with two planting structures:a.seeds in humus overhead the porous concrete;b.seeds in substrate among voids of the porous concrete.Test results showed that with the changes of grain size distribution and target void ratio,the bulk density of 12 groups of porous concrete varied between 600-800 kg/m3;compressive strength of the porous concrete at the age of 28-day was above 5 MPa;and the pH value of internal voids between 11 to 12.Under necessary maintenance and management conditions,plants could completely grow well in the porous concrete,indicating that the mixture proportion of planting substrate is good.关键词
页岩陶粒/多孔混凝土/密度/pH值/抗压强度/空隙率/植生Key words
shale ceramsite/porous concrete/bulk density/pH value/compressive strength/void fraction/vegetating分类
建筑与水利引用本文复制引用
刘琦,夏振尧,刘大翔,张伦,姚小月,许文年..页岩陶粒植生型多孔混凝土制备与植生试验研究[J].长江科学院院报,2017,34(12):115-121,7.基金项目
国家自然科学基金项目(41202250) （41202250）
长江科学院开放研究基金项目(CKWV2015205/KY) （CKWV2015205/KY）
三峡大学研究生科研创新基金项目(SDYC2016023) （SDYC2016023）
