不同混合材对硫铝酸盐水泥性能的影响  

Effect of different mixtures on properties of sulphoaluminate cement

作　　者：马慧 席峥 徐萍 姚亮 徐慧 黄增 MA Hui(Yaobai Special Cement Technology Research and Development Co.LTD.,Xi'an 710100,Shaanxi,China)

机构地区：[1]尧柏特种水泥技术研发有限公司,陕西西安710100

出　　处：《水泥》2024年第9期4-7,58,共5页Cement

摘　　要：不同混合材因化学活性不同、微观形貌差异等原因,在掺入硫铝酸盐水泥中时对水泥的后续水化过程会产生不同作用,从而对水泥的强度、氯离子扩散系数、膨胀率、水化热、微观形貌等产生影响。本文研究了在硫铝酸盐水泥中分别按5%、10%、15%、20%质量分数掺入石灰石、矿渣粉、粉煤灰后,水泥各项性能的变化。通过物理性能检测发现同种混合材在不同掺量下各性能呈规律性变化,其中掺入5%矿渣粉对强度影响最低,掺入5%或10%石灰石粉可有效抵抗氯离子扩散,各掺量粉煤灰都会产生良好的微膨胀效果。Due to differences of chemical activity and microscopic morphology,different mixtures have different effects on the subsequent hydration process of sulfoaluminate cement and thus affect the strength,chloride ion diffusion coefficient,expansion rate,hydration heat and microscopic morphology of cement.This article studies the changes in various properties of cement after adding limestone,slag powder,and fly ash to sulfoaluminate cement at mass fractions of 5%,10%,15%,and 20%respectively.The physical property tests show that the properties of the same mixture changed regularly with different dosages,in which the addition of 5%slag powder has the lowest effect on the strength,the addition of 5%or 10%limestone powder can effectively resist the chloride ion diffusion,and each dosage of fly ash can produce a good micro-expansion effect.

关 键 词：硫铝酸盐水泥 混合材 强度 氯离子扩散系数 膨胀率 

分 类 号：TQ172.44[化学工程—水泥工业] TQ172.7[化学工程—硅酸盐工业]