泵送混凝土的应用

Practical application of pumping concrete

通过在高速公路隧道施工建设中的实践与摸索 ,总结了以往类似工程的一些经验 ,阐述了泵送混凝土的一些基本特性及泵送混凝土的配合比设计 ,原材料的选取 ,泵送混凝土的具体配制及调整。介绍了宁台温高速公路二期工程牛官头隧道二次衬砌泵送混凝土的配制 。

Through practice and trial of tunnel construction i n expressway, summa rize previously similar experience, recount the basic characters and the design of matching proportion of pumping concrete, involve the selection of concrete ra w materials, specific compounding concrete and its adjustment, introduce specifi c matching proportion of No. 2 lining concrete in Niuguantou tunnel of Ningtaiwe n expressway of No. 2 project. At last, an example of matching proportion is lis ted for reference.