Study Of Green-growing Concrete Technology For Slope Protection

With the increasing prominentment of environmental problems, green-growing concrete technology for slope protection,which has both engineering protection and environmental ecological effect characteristics,is catching more and more people's attention. This article use experiment and numerical simulation method to study three kinds of green-growing concrete technology for slope protection.This paper adopts volume method to calculate the porous fiber concrete's mix proportion, and the best water-cement for porous fiber concrete ratio is determined by test.Starched method is used in porous fiber concrete's mixing, and finally porous fiber concrete test-components are molded under a certain pressure. Analysis of experimental results indicated that ,when concrete's void ratio of porous concrete is less than 30%,it can entirely fulfills the Japan criteria of green-growing porous concrete for slope protection through the addition of suitable amount of fiber materials.This paper adopts polymer on porous fiber reinforced concrete pore surface treatment, alkaline environment of pores inside the porous fiber reinforced concrete pore got effectively improved. We add a certain amount of soil stabilizer enzyme into the planting base material which is on the surface of porous concrete to improve the anti-scouring performance of planting base material, and it can provides plant seeds with a stable initial environment for sprouting. After compounding planting base material into slurry with a certain fluidity, it can fill the pores inside porous fiber reinforced concrete by osmotic way. Plants grow well after necessary maintenance and management.Green-growing concrete block for purifying water quality uses 390mm×240mm×190mm as its lord block type's size , cooperated with half piece size of 190mm×240mm×190mm . Block uses the form of single lumen and distribution of holes on its surfaces (except the two surfaces which are made of porous fiber reinforced concrete). The mortar between the surfaces which have distribution of holes will form a kind of pin key after condensation , which helps to improve the shear performance of masonry structure. Based on analysing the result of purification tests, we can draw a conclusion that, as time goes on ,block's one-time removal rates of harmful substances in the wastewater show a trend of first increaseing, then decreasing, and finally stabilizing. Block's one-time removal rates of CoDcr, TN and TP can separately reach the highest 87%, 70% and 90%, which shows that green-growing concrete block for purifying water quality has a good water purification function.Through the indoor experiment, it concluds that anti-scouring and green-growing concrete blocks mentioned by this article can more effectively reduced the scour of subgrade slope rainfall than traditional pore-cave revetment blocks . Based on the numerical simulation analysis of anti-scouring and green-growing concrete block's influence of rainfall infiltration of subgrade slope,we can draw a conclusion that,with the same hole's rate, anti-scouring and green-growing concrete blocks with horizontal holes can more effectively reduce the amount and depth of rain infiltration than traditional pore-cave revetment blocks with vertical holes,and this effect shows a trend of first increasing and then decreasing as rainfall lasting.