Effect of Activated Gangue on Plasticizing Efficiency of Plasticizers

Abstract:

The effect of activated ground gangue(AG), while equally replacing cement with different proportions, on fluidity of cement pastes added with plasticizers was investigated by experiments. The effect of AG on plasticizing efficiency of plasiticizers was also compared with that of other mineral admixtures, i.e. slag powder(Slag) and high calcium fly ash(HCFA). The results show that as for 3brand Portland cements and 3type plasticizers used in the experiment,replacing partial cement with AG reduces the plasticizing efficiency of plasticizers;however, replacing partial cement with Slag or HCFA can increase the plasticizing efficiency of plasticizers.Finally,the paper presents an analysis of the acting mechanism of AG, Slag and HCFA on plasticizing efficiency of plasticizers.

Key words:mineral admixture; activated gangue; plasticizer; compatibility; plasticizing efficiency