外掺MgO筑坝技术在长沙水电站拱坝中的应用

Admixture MgO Used for Building Changsha Double-curved Arch Dam

大体积混凝土常规温控措施费工费钱 ,表面散热、封闭灌浆等需要工期较长。在广东省阳春市长沙水电站拱坝建设中 ,通过研究 ,采用了外掺MgO微膨胀混凝土快速筑坝技术 ,全坝不分缝 ,达到了节省人力物力、经济快速的目的。

The conventional temperature control and closed circuit grouting measures for building large volume concrete work usually spend a great number of expenses and time, therefore, the MgO material is used as admixture to make microex pansive concrete for building Changsha arch dam. The total dam is joint-free, and the labour force and expenses are cut down.