粉煤灰粒径对高浓度胶结充填材料性能的影响研究
发布时间：2018-11-07 18:25
【摘要】：为研究粉煤灰粒径对高浓度胶结充填材料性能的影响,对原状粉煤灰进行研磨分析,获得不同粒径特征的粉煤灰颗粒群。通过测试粉煤灰-水泥-煤矸石混合料的堆积空隙率,研究了粉煤灰粒径特征对混合干料空隙率的影响,以及料浆流变特征、坍落度和单轴抗压强度与粉煤灰粒径之间的关系。研究结果表明,充填料浆坍落度与混合干料堆积空隙率线性相关,料浆屈服应力和塑性粘度随粉煤灰粒径的减小而减小,单轴抗压强度随粒径的减小而增大。
[Abstract]:In order to study the effect of particle size of fly ash on the properties of high concentration cemented filling materials, raw fly ash was ground and analyzed, and different particle groups of fly ash with different particle size characteristics were obtained. The influence of particle size characteristics of fly ash on the porosity of dry mixture and the relationship among rheological characteristics, slump, uniaxial compressive strength and particle size of fly ash were studied by testing the stacking void ratio of fly ash-cement-coal gangue mixture. The results show that the slump of the filling slurry is linearly related to the porosity of the mixed dry mixture, the yield stress and the plastic viscosity of the slurry decrease with the decrease of the particle size of fly ash, and the uniaxial compressive strength increases with the decrease of the particle size.
【作者单位】： 中国矿业大学(北京)资源与安全工程学院;
【基金】：“十一五”国家科技支撑计划资助项目((2011BAB48B02) 中央高校基本科研业务费专项资金资助项目(2014QZ03)
【分类号】：TD823.7
本文编号：2317211
[Abstract]:In order to study the effect of particle size of fly ash on the properties of high concentration cemented filling materials, raw fly ash was ground and analyzed, and different particle groups of fly ash with different particle size characteristics were obtained. The influence of particle size characteristics of fly ash on the porosity of dry mixture and the relationship among rheological characteristics, slump, uniaxial compressive strength and particle size of fly ash were studied by testing the stacking void ratio of fly ash-cement-coal gangue mixture. The results show that the slump of the filling slurry is linearly related to the porosity of the mixed dry mixture, the yield stress and the plastic viscosity of the slurry decrease with the decrease of the particle size of fly ash, and the uniaxial compressive strength increases with the decrease of the particle size.
【作者单位】： 中国矿业大学(北京)资源与安全工程学院;
【基金】：“十一五”国家科技支撑计划资助项目((2011BAB48B02) 中央高校基本科研业务费专项资金资助项目(2014QZ03)
【分类号】：TD823.7
【相似文献】
相关期刊论文 前2条
1 高福烨;关于煤灰聚合条件的探讨[J];煤气与热力;1982年01期
2 ;[J];;年期
相关会议论文 前2条
1 李文春;陈克;宋金刚;樊建人;;灰粒冲击炉内换热器管壁的数值模拟[A];2006年中国机械工程学会年会暨中国工程院机械与运载工程学部首届年会论文集[C];2006年
2 李文春;陈克;宋金刚;樊建人;;灰粒冲击炉内换热器管壁的数值模拟[A];安全与可靠性——2006流体机械与压力容器技术论坛论文集[C];2006年
，本文编号：2317211
本文链接：https://www.wllwen.com/kejilunwen/kuangye/2317211.html
