增密硅灰泵送混凝土在鱼天隧道中的应用

The Application of Pumping Concrete of Densitied Silica Fume in the Yutian Tunnel

增密硅灰是一种便于运输、便于使用能更好地应用于混凝土的高效多功能添加剂。混凝土可泵性可用流变学的概念来描述。ＬＴＳ─１型增密硅灰泵送混凝土添加剂能显著地改善泵送混凝土可泵性，同时也明显地提高硬化后混凝土的均质性和强度等性质。

Densitied silica fume is a kind of excellent multi-function replenishment, especially for concrete. It is easy to transport, and convenient to use. The pumpability of concrete can be described by the concept of rheology. LTS-1 replenishment of pumping concrete of densitied silica fume can markedly improve the pumpability of pumping concrete and obviously increase the quality and strength of hardened concrete.