陶瓷抛光砖粉与水泥熟料的相互作用
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摘要
通过化学结合水量和水化热的测定,研究陶瓷抛光砖粉与水泥熟料的相互作用,并将之与粉煤灰对比。结果表明:陶瓷抛光砖粉的掺入降低了复合胶凝材料的总水化程度,但促进了复合胶凝材料中水泥熟料的水化;以相同掺量取代水泥熟料,掺抛光砖粉可明显促进水化样早期水化,降低水化热,至水化后期这种促进作用有所降低。在最佳掺量约30%的条件下,抛光砖粉对水泥熟料水化反应的促进作用明显,此时熟料水化程度最高,表现为等效结合水量值最大。掺粉煤灰对水化样的早期水化促进作用不明显,但至水化后期会加速水化。粉煤灰掺量越大,粉煤灰自身的反应程度越低,水泥水化的程度越高。
The interaction between ceramic polishing powder and cement clinker were studied by determining the chemical combined water content and the heat of hydration.The results show that the incorporation of ceramic polishing powder decreases the total hydration degree of complex binders and promotes the hydration degree of cement clinker in complex binders.The speed of hydration of cement at early age was accelerated and the heat of hydration of cement was reduced greatly as well by adding polishing powder.The promotion effects of polishing powder on hydration of cement is the highest under the best content of polishing powder in complex binders,at the same time,hydration degree of cement clinker and the equivalent chemical combined water content are the highest as well.The promotion effect of fly ash on hydration of cement is less than that of polishing powder at early age,but the final hydration speed of cement accelerated by adding fly ash.The hydration degree of fly ash decreased and the hydration degree of cement increased as the content of fly ash in complex binders increasing.
The interaction between ceramic polishing powder and cement clinker were studied by determining the chemical combined water content and the heat of hydration.The results show that the incorporation of ceramic polishing powder decreases the total hydration degree of complex binders and promotes the hydration degree of cement clinker in complex binders.The speed of hydration of cement at early age was accelerated and the heat of hydration of cement was reduced greatly as well by adding polishing powder.The promotion effects of polishing powder on hydration of cement is the highest under the best content of polishing powder in complex binders,at the same time,hydration degree of cement clinker and the equivalent chemical combined water content are the highest as well.The promotion effect of fly ash on hydration of cement is less than that of polishing powder at early age,but the final hydration speed of cement accelerated by adding fly ash.The hydration degree of fly ash decreased and the hydration degree of cement increased as the content of fly ash in complex binders increasing.
引文
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[9]徐子芳,张明旭,闵凡飞.微观表征法研究煤矸石改性水泥砂浆水化机理[J].硅酸盐通报,2010,29(1):243-247.
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[2]缪松兰,马光华,李清涛,等.建筑陶瓷抛光废渣制备轻质陶瓷材料的研究[J].陶瓷学报,2005,6:71-79.
[3]徐奎军,王功勋,祝明桥.养护条件对钢渣粉水化性能的影响[J].硅酸盐通报,2011,30(6):1287-1293.
[4]苗琛,冯春花,李东旭.烧页岩作为水泥混合材的研究[J].硅酸盐通报,2010,29(6):1397-1401.
[5]周传友,苏达根,王功勋,等.陶瓷抛光砖粉作混合材对水泥性能的影响[J].水泥,2007,(1):11-13.
[6]王功勋.陶瓷抛光砖粉作辅助胶凝材料的火山灰性[J].硅酸盐学报,2010,38(7):1229-1234.
[7]胡佩伟,杨华明,陈文瑞,等.高岭土尾砂活化及用于胶凝材料的研究[J].硅酸盐通报,2010,29(2):292-299.
[8]李绍彬,潘志华,胡平淳,等.水泥熟料-粉煤灰体系中粉煤灰活性的复合激发研究[J].硅酸盐通报,2011,30(4):854-859.
[9]徐子芳,张明旭,闵凡飞.微观表征法研究煤矸石改性水泥砂浆水化机理[J].硅酸盐通报,2010,29(1):243-247.
[10]陈益民,许仲梓主编.高性能水泥基础研究-973项目研究进展[M].北京:中国纺织工业出版社,2004:252-258.