Recycled-aggregate Green Ecological Concrete Research

With the quick development of building industry,the value of construction wastesis also soaring to unprecedented heights.Besides the charges of handling constructionwaste is very high，it also causes a lot of environmental problems and social harmfuleffects. Recycled concrete is a kind of restoring vegetation concrete confected byrecycled aggregate and industrial waste which was the primary materials. At the sametime,this concrete can save on the large number expenditure ofcleaning,transportation and disposing.On the other hand,it will reduce the exploitationof natural stone and sand,protect environment,and safe guard durative development ofsocial.Recycled concrete fully meets three meanings of“green”,which putted forwardby World Environment Organization:(1)saving resource and energy sources;(2)notdestroy environment,while infavor of environment;(3)durative development,not onlymeet the request of men of present，but also not hurt the benefits of offspring.So theRecycled Conerete belongs to durative developed “green conerete”.Concrete’sproduction and construct technology must develop in the way of saving resource,alleviating the burthen of environment, maintenancing zoology balance. It isrepresenting the up to the minute development in the future.And this paper mainly focuses on using recycled aggregate to prepare greenecological concrete, which has a high effective porosity, high strength, low alkalinity,high utilization of waste and good durability. The main research content is to studythe influencing factors on effective porosity, compressive strength, alkali environmentand durability performance of green ecological concrete and to determine the bestmix ratio. Study is carried on the selection of suitable ecological concrete vegetation;growth requirements to local characteristics of plants; planting structure researchsuitable for different engineering applications, preparation of nutrient soil slurrycorresponding. And construction technology is applied to a practical project forfeasibility research of green ecological concrete engineering application.