Abstract：This paper studied the multiple-mineral concrete activator compatible with polycarboxylate auperplasticizer. The activator was used in concrete to observe the influence on the strength,workability,durability of the concrete with different curing conditions and mixing amounts. The active hydration products were investigated with the modem analysis method such as SEM,XRD to find out the acting mechanism of that activator.It can be found that the activator can effectively improve the early stage compressive strength without the deterioration of workability,and the hydration of C2S,C3S in cementitious binder is accelerated by the activator,it also enhance the activity of multiple-mineral remarkably and accelerate its secondary hydration reaction. And through practical application in a berth project of KeMen Port,Liang Jiang. We have tested the durability of concrete,which is a mixed type I activator. The results of the sample for the test have shown that the durability of concrete such as long-term strength,anti-carbonization and sulphate resistance is appropriate to the standard.

Keyword：polycarboxylate superplasticizer;multiple-mineral concrete;activator;compressive strength;