灰坝固化粉煤灰配合比优化  

MIXING PROPORTION OPTIMIZATION OF SOLIDIFIED FLY ASH IN ASH DAM

作　　者：王学雷 喻林[1] 高佳鑫 WANG Xue-lei;YU Lin;GAO Jia-xin(Institute of Mechanics and Materials,Hohai University,210098,Nanjing,China;Shanghai Jianke Engineering Consulting Co.,Ltd.,200032,Shanghai,China)

机构地区：[1]河海大学力学与材料学院,南京210098 [2]上海建科工程咨询有限公司,上海200032

出　　处：《建筑技术》2021年第10期1187-1190,共4页Architecture Technology

摘　　要：结合某电厂灰坝项目研究筑坝材料,通过相关力学性能试验,分析水泥、粘土掺量对固化粉煤灰抗渗强度、抗剪强度及抗压强度的影响。试验结果表明,掺入水泥和粘土固结材料后,粉煤灰的各项力学性能指标均有不同程度的改善。单掺水泥和双掺水泥粘土的抗渗等级、抗剪强度及抗压强度均随龄期增长不断改善。掺加材料的上限比例:单掺水泥为20%,双掺水泥、粘土为40%。当固化粉煤灰配合比(质量百分比)为水泥∶粘土∶粉煤灰=20%∶20%∶60%时,固化粉煤灰试件的抗渗、抗剪和抗压三项指标综合最佳,为固化粉煤灰最优配合比。Dam building materials were researched according to a power plant ash dam project.The influence of different mixing ratios of cement and clay on the impermeability,shear resistance and compressive strength of solidified fly ash was studied through related mechanical property tests.The test results showed that addition of cement and clay consolidation materials could improve various mechanical properties of fly ash by different degrees.The impervious grade,shear strength and compressive strength of single-cement and double-cement clay were improved with the increasing of the age.The upper limit admixture ratio is 20%for single admixture of cement and 40%for admixture of both cement and clay.The results showed that there were comprehensively the best anti-permeability,anti-shear and anti-pressure indexes when the mixing ratio(mass percentage)of cement,clay and fly ash is 20%,20%and 60%,which was the optimal mixing ratio of solidified fly ash.

关 键 词：灰坝 固化粉煤灰 配合比 优化 

分 类 号：TU52[建筑科学—建筑技术科学]