Experimental study of alkali-activated compound industrial by-products;

Study on hydration mechanism of alkali-activated meta-kaolin cementitious material;

Using alkali-activated compound slag muck as cementitious materials to make environment burthen-down concrete is a kind of good approach to use various industry slag mucks effectively.

Effect of alkali activation on fly ash activity;

The fly ash is an industrial residue,it can be alkali-activated,and the reaction product has a lot of champion performance than the traditional gel material,such as excellent acidresistivity,resistance to elevated temperatures,resistance to sulphate attack,low shrinkage ratio,etc.

Alkali-activation as the first method is used to prepare the fly ash Geopolymer and the orthogonal test is used to optimize its ratio.

The results showed that the water glass alkali activator had best effect to reinforce the compressive strength of geopolymeric cement.

The results from probing into some key properties of the geoplymer show that the activating effect using water glass as a activator is not as good as using pure NaOH; the optimum proportion of slag to flyash is 4∶6 and the optimum blending ratio of alkali-activator is 10%;curing temperature of the geoplymer in water ought to be above 30℃; and cation Ca2+ plays an important ro.