摘要
研究了不同品质粉煤灰制备的水泥粉煤灰稳定碎石其7d、28d、180d无侧限抗压强度,并通过计算粉煤灰的0.08mm通过率、活性物质含量以及7d火山灰活度等品质指标与强度之间的灰色关联度,分析了粉煤灰的品质指标与材料强度之间的关系。据此,优选出7d活度作为水泥粉煤灰稳定碎石中粉煤灰品质的评价指标,以活性物质含量作为粉煤灰满足材料长期强度增长性的技术要求。
The 7d,28d,180dunconfined compressive strength of cement-fly ash stabilized crushed stones,prepared with different qualities fly ash,are studied in this paper.The grey correlation degrees between material strengths and quality indexes of fly ash including 0.08mm passing rate,content of active material and 7dpozzolanic activity are calculated and the relationships between them are analyzed also.Hereby,the 7dpozzolanic activity is selected to be evaluation index of fly ash used in cement-fly ash stabilized crushed stones and the content of active material is selected to be technical requirement on strength development.
出处
《公路》
北大核心
2010年第8期195-198,共4页
Highway
关键词
灰色关联分析
水泥粉煤灰稳定碎石
品质指标
活度
grey relational grade analysis
cement-fly ash stabilized crushed stones
quality index
pozzolanic activity
