Research On Application Of Green-growing Porous Concrete In Ecological Slope Protection

With the prosperous development of economic construction in our country,environment degradation problem is becoming increasingly serious.In the project of slope protection,traditional slope protection method has brought irreversible damage to ecological environment,which makes ecological civilization construction becomes imperative.As a new slope protection material,green-growing porous concrete has functions in both slope protection and ecological protection,while at the moment,it lacks systematic research on the design and application of green-growing porous concrete.This article makes discussion and research on the basis of designing of green-growing porous concrete,performances of green-growing porous concrete,plant nature of porous concrete and application of ecological slope protection projects.In view of the design of green-growing porous concrete,first,make design for the index of evaluating green-growing porous concrete performance and confirm green-growing porous concrete 7d compression strength at 6MPa,28 d compression strength ?8MPa,permeability coefficient ?16mm/s,pores alkalinity at 7.0~9.0;permeability coefficient of green-glowing porous concrete ?10mm/s,alkalinity of plants in pores at 7.0~8.5.Then compare and analyze common mixture design method and confirm to adopt volume method to make mixture design;design reasonable preparation process through checking literatures and experiment analysis.Finally choose green-growing porous concrete mixture design method preferably by adopting orthogonal experimental design method and combining related principles of material science and analyze the affecting regularities of aggregate size,design porosity,water-cement ratio,compressive strength of fly ash content on porous concrete,permeability coefficient and alkalinity in pores etc.In view of the green-growing nature of porous concrete and taking plant section for slope protection,plant substrate formulation,alkali environment process in pores of porous concrete and plant nature process as research objects,select festuca elata as slope grass and prepare plant substrate.To meet the plant growth requirement,it takes various kinds of alkali-reducing treatments for the alkali environment in the pores of porous concrete and it finds out that spraying ferrous sulfate is very useful in alkali reduction,which has decrease the alkali degree by 16%.Explore planting process and make planting experiments,attain planting effects as ecological slope protectionprogram with vegetation density at 81pcs/dm2,vegetation height at 18 cm,compression strength at 8.8MPa,permeability coefficient at 11.47mm/s and plant substrate alkalinity at 8.26.In view of project application,analyze porous concrete slope protecting mechanism and vegetation slope protection mechanism and explore the construction technology of green-growing porous concrete in slope protection.Realize the goal of vegetation sprouting after three days and growing to lush ecological protection for slope in 60 days through the practice on slope of 42°,moreover,ecological slope protection has good project benefit,which provides guidance to the engineering application of green-growing porous concrete.