A new type of cement was prepared with ground limestone powder, blastfumace slag, steel slag and gypsum without calcination. The fraction of ground limestone powder in the cement was as high as 40 wt%-60 wt% without P...A new type of cement was prepared with ground limestone powder, blastfumace slag, steel slag and gypsum without calcination. The fraction of ground limestone powder in the cement was as high as 40 wt%-60 wt% without Portland clinker. All of its physical properties can meet the requirements of masonry cement standards. The impact of limestone content on physical properties of the cement and determined its impact on law was investigated. The steel slag can excit the aquation activity of this cement effectively, and the influence of its quantity on the strength of the materials was studied, which shows that the optimum quantity of mixing is 10%. By way of changing the different content of the lime stone by quartzy sample, the law of the compression strength and the PH value was determined, confirming that the lime stone can promote the early aquation of the slag and improve the early strength. The main hydration product of this cement is calcium aluminate hydrate, ettringite and calcium silicate hydrate, as indicated by XRD and SEM analysis.展开更多
文摘A new type of cement was prepared with ground limestone powder, blastfumace slag, steel slag and gypsum without calcination. The fraction of ground limestone powder in the cement was as high as 40 wt%-60 wt% without Portland clinker. All of its physical properties can meet the requirements of masonry cement standards. The impact of limestone content on physical properties of the cement and determined its impact on law was investigated. The steel slag can excit the aquation activity of this cement effectively, and the influence of its quantity on the strength of the materials was studied, which shows that the optimum quantity of mixing is 10%. By way of changing the different content of the lime stone by quartzy sample, the law of the compression strength and the PH value was determined, confirming that the lime stone can promote the early aquation of the slag and improve the early strength. The main hydration product of this cement is calcium aluminate hydrate, ettringite and calcium silicate hydrate, as indicated by XRD and SEM analysis.
