粉煤灰为燃煤电厂的副产品,混凝土中掺用粉煤灰具有降低水化热的优点,且能取得显著的技术经济效益。近年采国外又在水工隧洞、调压井、溢洪道护坦和边墙等水工建筑物的混凝土中掺用粉煤灰,主要目的是增加混凝土的抗蚀性,改善其抗渗性,提高混凝土的耐久性。本文介绍的水工隧洞的混凝土,在衬砌时掺用粉煤灰的情况,并以英国迪诺威克(Dinorwic)抽水蓄能电站实例加以说明。 Fly ash is a by-product of coal-fired power plants. Admixing fly ash to concrete has the advantage of reducing heat of hydration, and can achieve significant technical and economic benefits. In recent years, mining abroad, mining and construction of hydraulic tunnels, surge tanks, retaining walls and spillway sidewalls and other hydraulic structures mixed with fly ash, the main purpose is to increase the corrosion resistance of concrete to improve its impermeability and improve The durability of concrete. This article describes the concrete of hydraulic tunnels, the case of fly ash mixed with lining, and is illustrated by the example of Dinorwic pumped storage power station in the United Kingdom.