超低强度高流动水下不分散混凝土的配制研究

2.中交武汉港湾工程设计研究院有限公司，湖北 武汉  430048）

    摘要：为对海底隧道沉管未铺设基础进行后注浆处理，研发一种具备超低强度高流动水下不分散混凝土注浆材料。通过研究增粘剂掺量、胶凝材料用量、掺合料种类及掺量、水胶比对混凝土抗压强度、流动性、水下不分散性能的影响规律，总结了超低强度高流动水下不分散混凝土的配制方法。

    关键词：超低强度；高流动性；水下不分散；配制

    中图分类号：TU528.36        文献标识码：A        文章编号：1001-702X（2018）08-0104-04

 

Study on preparation of ultra-low strength，high flowability and underwater non-dispersible concrete

ZHOU Shaohao1，SHI Zhengxiong1，ZHANG Ruogang1，LIU Kexin2，YANG Jun2

（1.Central-Southern Safety and Environment Technology Institute Co. Ltd.，Wuhan 430071，China；

2.CCCC Wuhan Harbour Engineering Design and Research Co. Ltd.，Wuhan 430048，China）

    Abstract：In order to carry out post grouting treatment for subsea tunnel immersed foundation without laying foundation，a grouting material with ultra-low strength，high flowability and underwater non-dispersible was investigated. The effects of the amount of viscosity-modifying admixture，the amount of cementitious material，the type and amount of concrete admixtures，water binder ratio on the compressive strength，fluidity and underwater non-dispersibility of concrete were studied. The preparation method of ultra-low strength，high flowability and underwater non dispersible concrete was summarized.

    Key words：ultra-low strength，high flowability，underwater non-dispersible，preparation method