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水利(水电)工程上使用的石油沥青称为水工沥青。沥青混凝土是以石油沥青为胶结材料与砂石矿粉混合拌制而成的新型防渗防护材料。它作为水利工程上的一项新技术,早在三十年代已被应用于水库大坝的防渗斜墙。由于沥青防渗在技术经济上有一系列优点,因此,在五十至七十年代,被世界各国广泛采用。据近年的粗略统计,国外已兴建了100多座沥青混凝土防渗墙土石坝,几十项海湾港岸防护工程,几十项运河和渠道防渗工程以及十
Petroleum asphalt used in water conservancy (hydropower) engineering is called hydraulic asphalt. Asphalt concrete is a new anti-seepage protective material made of petroleum asphalt mixed with sand and gravel powder. As a new technology in hydraulic engineering, it has been applied to seepage-proof sloping walls of reservoir dams in the 1930s. Since asphalt seepage prevention has a series of technical and economic advantages, it was widely adopted by all countries in the world in the 1950s and the 1970s. According to the rough statistics in recent years, more than 100 earth-rock dam with asphalt concrete impervious walls have been built abroad, with dozens of protection projects in the Gulf Coast, dozens of canal and canal seepage control projects and ten