粉煤灰掺用技术在桥梁路基伸缩缝中的应用

The application of fly ash mixing technology in shrinkage joint of bridge roadbed

介绍了长邯高速公路伸缩缝C50混凝土的配合比设计概况,并对粉煤灰混凝土各施工参数的配合比设计进行了分析计算,阐述了外掺粉煤灰混凝土在工程中的应用情况,实践表明,应用“双掺”技术,节约了生产成本,且工程质量也得到了提高,值得推广应用。

This paper introduces the general condition of mixture ratio design of C50 concrete for shrinkage joint in Chang-Han expressway,analyzes and calculates the mixture ratio design of each construction parameters of fly ash concrete,illustrates the application condition of external mixing fly ash concrete in construction,and shows by practices that using "dual mixing" technology can man save production cost and improve construction quality,which is worthy to be popularized.