POWDERY SETTING REGULATOR, CEMENT CONCRETE, QUICK- SETTING CEMENT CONCRETE, AND METHOD FOR WORKING QUICK- SETTING CEMENT CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a setting regulator securing the fluidity or force-feed property of cement concrete over a period of time required in working site or longer and capable of setting sprayed cement concrete in a short time when incorporated with a quick-setting agent at a necessary time.;SOLUTION: This powdery setting regulator for cement concrete comprises slaked lime, an organic acid and gypsum, but no quick-setting agent. Another objective method for working quick-setting cement concrete is characterized by that cement concrete formulated with no quick-setting agent is mixed with the above powdery setting regulator to prepare a cement concrete and just before using the cement concrete, a quick-setting agent is mixed into the cement concrete to put the resultant cement concrete to working; wherein the original cement concrete formulated with no quick-setting agent may be incorporated with a water reducing agent.;COPYRIGHT: (C)2001,JPO