【作者】 王守德； 芦令超； 轩红钟；

【Author】 WANG Shoude,LU Lingchao,XUAN Hongzhong(University of Jinan,School of Materials Science and Engineering,Jinan,250022)

【机构】 济南大学,材料科学与工程学院；

【摘要】 结合X射线衍射和扫描电镜分析,研究了石膏和矿渣掺量对阿利特-硫铝酸钡钙水泥浆体膨胀性能的影响。结果表明:在阿利特-硫铝酸钡钙水泥中,随着石膏掺量的增加,膨胀率增加;随着养护龄期的延长,其膨胀率趋于稳定,水泥中钙矾石的形成是水泥浆体的主要膨胀源;添加适量矿渣可使阿利特-硫铝酸钡钙水泥砂浆结构更加致密,改善了砂浆内部的微观结构和水化产物的组成,从而减小其膨胀率,当掺量过高时,会显著增加其膨胀率,钙矾石和水镁石的形成是矿渣水泥的主要膨胀源。更多还原

【Abstract】 The influences of gypsum and slag on the expansion of alite-calcium barium sulphoaluminate cement were investigated by the means of XRD and SEM.The experimental results indicated that the expansion increased when the content of gypsum mixed rose.And the expansion of became stable with the hydrated period prolonged.The formation of ettringite phase is the main expansion source.Appropriate slag would make the structure of cement denser and improve the microstructure of mortar.Therefore,the cement with appropriate slag had smaller expansion.However,the expansion of cement with much slag would increase sharply.The formation of ettringite and brucite were the main expansion source of the cement with slag.更多还原