透水混凝土在市政道路施工中的应用

Application of Pervious Concrete in Municipal Road Construction

透水混凝土用水泥作为胶凝材,使用了单一或不连续级配的粗骨料,其中形成了一定的多孔结构,从而将骨料之间联系起来,形成一定的透水性,同时还能够保障材料本身的强度。但是,透水混凝土由于骨料较大,孔隙率较高,因此其强度相对而言还是有一定的差距,只能用在一些对水环境敏感的工程项目中,例如城市绿道、停车场、边坡防护、海绵城市道路等。本文主要讨论透水混凝土在市政道路施工中的应用,基于透水混凝土的特性,在当前建设海绵城市的背景下,透水混凝土有着重要的作用,对缓解城市内涝、提升城市蓄水能力起到巨大作用,从而营造出更舒适的城市空间。

Pervious concrete takes the cement as cementing material,and uses a single or discontinuous gradation of coarse aggregate,which forms certain porous structure a nd connects t he a ggregate,t hus forming certain permeability a nd g uaranteeing t he strength of t he material itself.But relatively speaking,due to large aggregate and high porosity,the strength of pervious concrete is not strong and can only be used in some engineering projects that are sensitive to water,such as urban greenway,parking lot,slope protection,sponge city road,and so on.This paper mainly discusses the application of pervious concrete in municipal road construction.Based on the characteristics of pervious concrete,pervious concrete plays an important role in alleviating urban waterlogging,improving urban water storage capacity and creating more comfortable urban space under the background of constructing sponge city.