厦门海沧大桥混凝土裂缝补强灌浆处理

 大型混凝土结构浇注过程中遇气温骤降，难免会产生收缩裂缝。采用EFN系列弹性环氧补强固结灌浆材料对厦门海沧大桥箱形基础裂缝进行灌浆处理，效果良好。详述了浆材选择、注浆压力设定、施工工艺及检测效果。由建筑垃圾、矿渣、铁矿礁石等组成的松散地层，分布均匀性差，孔隙率极大，是基坑工程施工的难点之一。针对长江广场杂填土层厚，渗透性强，地下水补给丰富等特点，简要介绍了应用于松散杂填土层的水泥水玻璃注浆防水的设计、施工方法及灌浆效果。

Consolidation grouting for concrete cracks at Xiamen Haicang Bridge

In a large scale pouring concrete structure,contruction cracks can hardly be avoided as temperature suddenly drops.It achieved good results that the cracks of the box foundation of Xiamen Haicang Bridge were treated by using the EFN elastic epoxy consolidation grouting material.The material selection,grouting pressure set up, construction technology and result detection are represented in detail in the paper.