高性能混凝土在东海大桥工程中的应用

马颖增

  （城建集团）

   摘要：东海大桥是我国第一次在海上建造的特大型桥梁，采用新型高性能混凝土来抵御海水的侵入和腐蚀，无疑是最好的技术措施。裂缝是混凝土病害中较为常见的现象；它对混凝土的耐久性产生直接的危害；本文着重描述了在该工程施工过程中能采取有效的技术措施来防治它；为今后推广和应用高性能混凝土，扫除了障碍。

   关键词：东海大桥 高性能混凝土 流淌性 裂缝 技术措施 减水剂 配合比试验

                                           The Application of HPC Construction in Donghai Bridge

                                                                                        MA Ying-zeng

Abstract:The Donghai Bridge is the first super large-scale brige ever built across channel in China. Given good performances in resisting seawater intrusion and corrosion, the adoption of new HPC is undoubtedly regarded as one of the best technical measures for the bridge building. One of common defects among concrete construction is the crack, which directs impact upon concrete durability. This paper elaborates effective technical measures to be adopted in preventing the concrete from crack. It is beneficial for boosting the adoption of HPC in future concrete construction.

Key Words: Donghai Bridge；HPC；Flowability；Fissure；Technical Measures；Water Reducing Agent；Mixing Rate Test