公路桥箱梁混凝土早期裂缝原因分析

摘要

Cracks on the concrete of highway bridge girders occurs frequently after being pouring.Deep cracks have oc-curred on the top and flange plate of a box girder of a highway concrete bridge.After testing on the materials used and anal-ysis on the crack-resistant test datum,the main reason of the cracks has been found.%公路桥梁梁部混凝土浇筑完成的早期经常会出现裂缝问题，某工程预应力混凝土箱梁顶板施工完毕到拆模期间，在箱梁顶板与翼板处出现不同程度通透裂缝。通过对原材料及混凝土抗裂性试验数据分析，找出与混凝土自身性能相关的产生裂缝的主要原因。