Research on properties of concrete with pre-hydrated fly ash and grounded furnace slag;

By test of performances effect recycled mill admitxture and grounded furnace slag on concrete,on the basis of diverse characteristics influence of each on concrete,adopting admitxture compound technique makes admitxture properties;advantage complement.

Application of slag powder ground in conorete;

Effect of the introduction of hydration inducting additive, accelerator and finely ground slag into cement on the hydra-tion, strength and pore size distribution of the paste was studied.

In the construction of the foundation slab of Terminal T3B Project at Beijing Capital International Airport,fly ash and fine slag powder were used,and the quantity of cement was reduced to lower than that of the code,without anti-freezing agent being admixed.

Adopting such three fields as modified ligneous calcium, the compound use of leading gas agent and various maintainable conditions, the problem of improving the cubic stability of low cement-water ratio concrete with a large additive amount of grinding fine ore is discussed.

The early hydration activation of pulverized slag powder, Class C fly ash and Class F fly ash were determined and analyzed systematically by the Environmental Scan Electron Microscope (ESEM) and the TG-DTA.

The carbonation depths of the pulverized slag powder mortar,flyash mortar and slag\|flyash combination mortar are measured systematically.

A quantitative mathematics function about the relationships between the compressive strength of the concrete and the compositions of ternary blended binders of cement-pulverized slag powder-superfine class F fly ash was educed by means of simplex-centroid experimental design.