Study On Performance Of Color Permeable Concrete

With the rapid development of the economy of our country,the level of our productivity has been greatly improved,and with the accelerating process of urbanization,urban infrastructure construction has become a very important factor in social development.In particular,the urban pavement,which is very critical to the urban outlook,is no longer the original muddy road.It has been gradually replaced by the cement asphalt pavement,which is often made up of water-resistant materials.The waterlogging of the city is caused by the impermeability of the road surface.As a new kind of green environmental protection material,permeable concrete is formed by cement,coarse aggregate and mixing water.On the basis of certain strength,water permeability can be guaranteed,but because the strength of permeable concrete is not very high,most of the scenes used are only in some pedestrian roads and bicycle lanes,but because of its good permeability,It effectively alleviates the problem of urban waterlogging and has been applied very well in the actual urbanization construction.Therefore,how to better promote the good use of permeable concrete in urban road construction requires a more in-depth study of this new material.This paper mainly analyzes and studies the performance of color permeable concrete,and summarizes the basic concept,structure model and basic theory o f mix design of color permeable concrete by consulting relevant literature.The macroscopic structure model of permeable concrete and the failure theory of permeable concrete are discussed.Through influence of raw materials on the performance of color pervious concrete,it is concluded that four different colorants have certain influence on the basic performance of pervious concrete,among which yellow colorant can improve the mechanical properties of pervious concrete.The corresponding compressive and flexural strength of pervious concrete reaches 28.2 MPa and 6.5 MPa when the content of 20%.The permeability coefficient of color permeable concrete decreases with the increase of the amount of yellow coloring agent.When the amount of yellow coloring agent is 20%,the corresponding permeability coefficient is 1.82 mm/s.The influence of red coloring agent on permeability coefficient of permeable concrete is small.The permeability coefficient of blue coloring agent can reach 2.38 mm/s.Under the condition o f immersion,four kinds of color concrete have good color anti-aging performance.Under the condition of natural sunshine,blue and green concrete have poor color anti-aging performance,red concrete takes second place,and yellow concrete is the best.In the experimental study of the effect of construction technology on the performance of color permeable concrete,it is found that the construction process has a great influence on its performance.The maximum compressive strength of concrete in 28 days was reached to 26.3MPa,and the permeability coefficient is 2.86mm/s.