Component Optimization and Seepage Simulation Method of Resin Based Permeable Brick

In order to solve the problem of urban surface runoff,it is necessary to study permeable brick deeply.Tensile test and DMA test were used to study the binder material of permeable brick,and a material with the best mechanical properties was selected as the binder of resin based permeable brick;The permeable brick with single gradation and continuous gradation and porosity of 0.1–0.5 gradient is constructed by 3D modeling method.The particle composition and the seepage simulation results of permeable brick under different design parameters were analyzed;A resin-based permeable brick with micro-pores was prepared using the selected binder and desert sand with high roundness as aggregate,and compared with the simulation,its water permeability coefficient is 3.25×10-2 cm/s and the compressive strength is 36.19 MPa.In the seepage simulation of permeable brick,it is known that with the increase of gradation width“value i”,the water permeability coefficient increases.Therefore,in order to control the number of aggregate particles and obtain better seepage performance,the wide gradation of i≥4 and the design porosity of 0.3–0.4 should be considered.This study provides a research basis and a simulation method for the component optimization of resin based permeable brick.

Research on Advantage and New Use of Korshinsk Peashrub Resources

Korshinsk Peashrub, a kind of excellent shrub resources in our country, is widely distributed in＂Three North＂ areas, namely, northeast, northwest and north China. The adaptability and survival rate of Korshinsk Peashrub are quite high and it has a strong resistance to coldness, drought and barren lands. The ability of branching and regeneration is considerably high, and its branches need to be chopped every four to five years, so the period of chopping for Korshinsk Peashrub is short, and the yield is high. Therefore, the advantages of Korshinsk Peashrub, such as abundant resources, easy to obtain, and high yield, should be made full use of, and the branches during chopping period should be fully utilized. Research on Korshinsk Peashrub resources can not only promote new development of the theory that applies to the specific biomass of Korshinsk Peashrub, but also help re- alizing environment friendly and convenient to use. It has great practical significance. The paper mainly introduces the advantages and research status of Korshinsk Peashrub resources in China. On this topic, new use of Korshinsk Peashrub should be explored, so as to make full use of Korshinsk Peashrub resources, and improve their application value further more.