寒冷地区机场道面高耐久性混凝土的研究及应用

Research on High Durability Concrete of Runway in Cold Region

寒冷地区多数机场的混凝土道面陆续出现破坏现象。这些破坏均不是由荷载引起 ,而是由于混凝土耐久性不良引起 ,这严重影响飞机安全起降 ,必须尽快予以解决。而解决寒区机场道面混凝土耐久性破坏的根本措施是提高混凝土密实度 ,改善混凝土孔结构 ,降低混凝土渗透性。本课题利用自行研制的LAS— 1高效外加剂配制成功渗透性明显降低的高耐久性混凝土 (HDC) ,其抗冻融性、耐腐蚀性及耐磨性均明显提高 ,不仅适用于新修混凝土道面 ,而且适用于混凝土道面修补 。

? Most damage of concrete runway in cold region is not caused by load but by the poor durability of concrete.It affects the safe taking off and landing of planes.And the basic measure to solve the problem of durability damage of runway concrete is to increase the concrete density,or to improve the hole structure of concrete to decrease the osmosis of concrete.The high durability concrete(HDC),whose osmosis resistance,frost thaw resisting,corrosion resistance and wear resistance are all improved greatly.It is can be used not only to build the new runway but also rehabilitate the old runway,and can increase the service life of concrete runway in cold region. 〔