In order to achieve green sustainable development,the cement industry is committed to promoting low-carbon and ultra-low emissions,through the development of new low-carbon materials,the use of industrial solid waste resources,reduce clinker consumption and pollutant emissions.The ultra-fine composite mineral admixture prepared by scientific proportioning of fly ash,slag powder,desulfurization gypsum and admixture is used to produce low-carbon cement by partially replacing clinker,and the influence of ultra-fine composite mineral admixture on cement performance is analyzed.The results show that the 28d compressive strengths and 28d flexural strengths of P·O42.5 cement for three companies are obviously improved by adopting 20％ultrafine composite mineral admixture to replace cement clinker in P·O42.5 cement.The ultrafine composite mineral admixture has the good feasibility to repace cement clinker.
Superfine composite mineral admixtureQuality controlCompressive strengthEconomic benefitsCarbon emission
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