Study On Preparation And Hydrated Mechanism Of Low-clinker Slag Cement

Today, the growing awareness of environmental protection, to reduce as far as possible energy cement, clinker high consumption of resources, increase the amount of industrial waste is one of the key issues of sustainable cement industry.To minimize the amount of clinker,increased incorporation of mixed materials, research papers changing the mass proportion of mixed material (slag, fly ash), using some calcined gypsum to replace part of gypsum, adding admixtures without alkali, chlorine and other harmful components,through massive experimental study systematic analysis of effection of the low ratio of raw materials on strength properties of the low-clinker slag cement. Portland cement clinker used in only 30% of the conditions, intensity can be prepared ISO 32.5 slag Portland cement intensity standards, and also has a certain surplus. The stability is qualified and setting time can reach 32.5slag Portland cement national standards.Papers test on various factors on the performance and hydrated mechanism of low-clinker slag cement. The chemically combined water and the reaction degree of slag and fly ash is quantitatively measure. An industry waste-cement system hydrated product and the microscopic structure is analysed through the Infrared spectra, XRD, and SEM mirror micro area observation.According to slag, fly ash and additives on performance of various laws, the hydrated mechanism of low-clinker slag cement is basicly studied.The experimental results and theoretical model presented in this paper will provide a scientific basis in order to take advantage of waste residues, better develop the great potential of mixed material, and establish a mixture design method of Portland cement-waste paste system and realize the prediction of properties.