摘要
Activation of the slag cement was performed using a composite activator.Experimental results show that the performance of the cement is remarkably improved.The fineness and specific surface area of the cement are increased by 23.7% and 1.4%,and 3d flexural strength and compressive strength are enhanced by 20.9% and 22.9%,respectively.Microstructure and phase composition of the hydrates were analysed by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The results indicate that Ca(OH) 2 in the hydrates decrease obviously.The morphology of the other hydrates appears to be flocculent,with a dense structure.The improvements of the properties is related to the microstructural changes.
Activation of the slag cement was performed using a composite activator.Experimental results show that the performance of the cement is remarkably improved.The fineness and specific surface area of the cement are increased by 23.7% and 1.4%,and 3d flexural strength and compressive strength are enhanced by 20.9% and 22.9%,respectively.Microstructure and phase composition of the hydrates were analysed by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The results indicate that Ca(OH) 2 in the hydrates decrease obviously.The morphology of the other hydrates appears to be flocculent,with a dense structure.The improvements of the properties is related to the microstructural changes.