Measures of increasing output & fineness of φ2.2 mx6.5 m slag mill;

Concrete crack mending material was prepared by Micro-fine Cement(MC),Granulated Ground Blast Furnace Slag(GGBS) and other admixtures.

From the point of view of engineering application and taking the GGBS and the composite mineral admixture which contains GGBS and FA as research objective,influence of the mineral admixtures on the performances such as durability and mechanical properties of the cementitious material is investigated.

The chloride binding capability of mortar and paste blended with 70% ground granulated blast furnace slag (GGBS) is greatly increased, especially the chemical binding capability.

2+2S) slag grinding system.

Application of the fly ash and ground slag on marine concrete

Effect of ground slag to hydration properties of different cement fineness

The influences of the fly ash and ground slag on performances of the strength,contraction,frost-resistance,impervious of Cl-and elasticity modulus of the LC45 light-weight concrete was researched.

It is found that fly Ash(FA)reduce Autogenous shrinkage,silica fume(SF)and ground granulated blast furnace slag(GBS)increases Autogenous shrinkage.

The performance of ground granulated blast furnace slag to resist the chloride corrosion is analyzed by the internal chloride e.

After 90 day s curing in 20℃ water, through accelerated freeze-thaw test, the frost resistance of HSC and SFRHSC specimens, with 20% weight of fly ash, silica fume or ground granulated blast furnace slag (GGBFS), were strdied.

In order to improve durability of pavement concrete by mechanism analysis,the high performance pavement concrete(HPPC) specimen was made by mixing with the wasted fine slag of steel-making which was regarded as the 6th constituent.

How to reduce the cement and how to optimize the mix proportion of binder in the high performance concrete (HPC) were studied by experiments on the high performance concrete with silica fume-fine slag composite.

5, limestone gravel of 5～20 mm, NNO type water-reducing agent and mineral mixture (grade Ⅱ fly ash and fine slag) are selected as components to form C70 and C80 high performance concrete with expected slump, while cement quantity is merely 450 kg/m3.