Composition Design And Performance Evaluation On Water-retentive Pavement

With the acceleration of urbanization, people's living standard and life quality are having an unceasing enhancement, but it also brings a series of negative effects, such as global warming, the greenhouse effect and heat island effect, etc. In order to put the low carbon environmental design concept fusion to highway construction, as a kind of new type pavement structure, environmental protection pavement structure gradually aroused people's attention. The water-retentive pavement is one kind of the typical structure. Water-retentive pavement uses a kind of pavement with large air voids, such as opened-grade-friction-cement and porous asphalt concrete. We can achieve its functional requirements by priming water-retentive material. This road can not only reduce itself to the absorption of solar radiation damage, but also can reduce the urban heat island effect. In the environmental protection consciousness of today, because of its environmentally friendly qualities, the water-retentive pavement will get great attention and widely used.This article simply introduces the main structure of the water-retentive pavement and its material selection and mix proportion; At the same time, performance tests were conducted for the maternal structure of the water-retentive pavement and the water-retentive materials structure. In determining the basic pavement structure, we analyze the cooling performance from the maternal structure pore ratio, water-retentive materials'composition proportion and perfusion forms though the indoor and the outdoor tempura test. And eventually chose the best cooling effect pavement structure and perfusion form. On this basis, the pavement structure to adopt the best preserved specimens, preparation of waterborne indoor pavement structure of water stability and overall bearing capacity were tested and evaluated. Finally, according to the domestic and foreign relevant experience, summarizes the suitable construction technology for this road. Meanwhile in response to the call and sustainable development of waterborne pavement preserved comprehensive social benefit evaluation.