| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a spray material wherein the ability of the constituent acidic liquid set accelerator to accelerate concrete set is improved, the effect of promoting strength development in relation to long-term strength is enhanced, and the set accelerator can be previously added to cement concrete and to provide a spray method using the same. <P>SOLUTION: There are disclosed (1) a spray material prepared by concurrently mixing cement concrete formulated with an admixture containing a calcium aluminate and a calcium aluminoferrite and having a mixing ratio, by mass, of the calcium aluminate to the calcium aluminoferrite of 1:(1-3) with an acidic liquid set accelerator containing sulfur, aluminum, and lithium and (2) a spray method comprising pumping cement concrete formulated with the admixture in (1) and concurrently mixing it with the acid liquid set accelerator in (1). <P>COPYRIGHT: (C)2012,JPO&INPIT |
