Study and application in project on the powder accelerating agent using in the high-intensity water-proofing jetting concrete

The study has been carried out the coordinate usage between the production control,filling material,strengthening material about the powder accelerating agent using in the C20 jetting concrete from its aspects of the effect mechanism,the best adulterate amounts,aluminum oxygen chamotte being produced out at present in mainland.And has produced out the powder accelerating agent using in the high-intensity water-proofing jetting concrete(over C30) with the characters of high-intensity in the early phase,high impervious index and 28-day intensity ratio over 90%(by 70% commonly).According to its using in project,the result of the experiment on its intensity and impervious index is very satisfactory.By the study,the purpose is to improve more function indexes of the powder accelerating agent,to promote the engineering level and synthetically beneficial result about jetting concrete without water.In order to meet the demand of the shoring intensity in early phase in the process of tunnel construction.