【摘要】 针对桥梁加固用混凝土要求强度高且需要垂直喷射的特点 ,介绍了喷射混凝土的性能 ,并对喷射混凝土的配合比进行了试验研究。研究结果表明 ,在喷射混凝土中掺入高性能复合外加剂 ,可显著提高喷射混凝土的性能 ,适合桥梁等建筑结构物的修复和加固。更多还原

【Abstract】 Some properties of pumping concrete were introduced and its mixture ratio was also studied.The test results indicated that many performances of pumping concrete were promoted when high performance additives was added into it,which is adapt to the maintenance of bridge and other buildings.更多还原