The physical properties and the activity of Tibets pozzolan, and the maximum content of pozzolan in the concrete are analyzed.

This paper analyzes the relations between the optimum content of the flyash and the slump,strength grade,grouting temperature and raw materials.

But now there are a few researches on the optimum content of the fiber.

On experiment analysis of optimum mix amount of modified asphalt in Asphalt of Trinidad Lake

The influence law of the different mole ratio liquid sodium aluminate accelerated agent on the cement performance was studied and its acceleration mechanism and the reason of existing optimum mix amount were investigated.

Grey connection analysis between property of fly ash and its optimal content

The results showed that the strength of high volume fly-ash concrete could reach the middle and low strength grade with low w/b and low volume of cement.

Through compounding of the 40%～90% high volume fly ash concrete and using of type HD-EA fly ash activator,the paper studied on the strength development laws of HVFAC with different ages,which will promote development of fly ash utilize technology and relieve pollution on the environment.

In this paper,Shrinkage,steel fiber corrosion,carbonation resistance and chloride-permeation resistance of high volume fine mineral mixture of RPC has been investigated by the experiment.

Study on durability of high content fly ash active powder concrete;