Experimental Study Of Pervious Concrete Pavement In Modern Urban Construction

Ji’nan is well-known, far and near Quancheng, born of water, because the spring and the name. Water is a controlling factor in the ecosystem. In October 2012, the Ministry of water resources, Ji’nan City, officially approved the pilot city for the construction of the national water ecological civilization. In April 2015, Ji’nan city was selected to build a pilot city.Accompanied by urbanization continues to accelerate, continued expansion of Jinan urban construction area, road hardening degree increased year by year, the intensity of urban development is more and more big, "heat island" "rain island effect increased year by year, the original flood storage stagnation zone was diverted, the construction of drainage facilities lag in the development of urban construction, which leads to a series of urban water security problems, such as enhanced heat island effect and impervious surface rate increase, water logging drainage ability is low and. There is also a waste of urban water resources, urban water and runoff rain water pollution and other serious problems. Permeable pavement research will improve the city water security, water environment, water resources and other issues. This paper mainly introduces the three kinds of permeable pavement, permeable brick pavement, permeable concrete pavement and permeable asphalt pavement. Focuses on the pervious concrete compressive strength and frost resistance experiment of influence factors, when the pervious concrete admixture of different admixtures variation in the compressive strength and frost resistance change data, draws the corresponding conclusion, pervious pavement application in the north of the city to provide corresponding reference test.The permeable pavement is composed of three layers, and that is surface layer, base layer and cushion layer, respectively. The principle of permeable pavement is mainly to form large pores by using the gap aggregate or the special requirements additives, so that the road surface has a significant water retention, water permeability and air permeability. With the difference of additives, design structure, patterns and paving technology, it has different effects on permeable pavement.Green rainwater collection system is the highlight of the construction of the national sponge City, similar to a sponge. Based on pervious pavement, green rainwater collection system refers to the pavement structure layer which can set water storage system, and the rainwater infiltrates into underground reservoir or ecological environmental rainwater storage and infiltration system. It will be better to ease the shortage of urban water resources by storage the rainwater. Based on the green rainwater collection facilities on the permeable pavement, the improvement of urban water security, water environment and water resources is very significant. Permeable pavement can increase the storage capacity of urban water resources, alleviate the pressure of urban flood control, beautify the urban environment, reduce the pollution of urban water, adjust the urban microclimate, and maintain the balance of urban soil ecological environment.The construction of Jinan City water ecological civilization and sponge city brings a good opportunity for extension the permeable pavement technology. Meanwhile, the permeable pavement, as an effective measures to build "sponge city", laid the foundation for promoting the construction of "Four Civilizations", that is the civilization of urban water ecological, water-use, administration and consciousness, respectively. In order to provide protection for speeding up the formation of the modern water conservancy development new pattern where "rivers and lakes are in favor of the people’s livelihood and overall development of the Spring City by developing the water resource rationally", and add dynamic to realize the goal of "the spewing of spring, the clear water of lake, unobstructed river, clean water and beautiful scene".