摘要
为揭示烧料礓石-遗址土裂隙注浆浆液的工作性能,分析不同水固比、浆液配比、浆液组成(烧料礓石-粉磨遗址土(CGN-G)、烧料礓石-天然松散遗址土(CGN-N))对浆液流变性能、流动性以及泌水稳定性的影响.结果表明,CGN-G、CGN-N浆液的稠度系数随水固比、浆液配比的减小而增大,流动度、泌水率均与之相反;相比CGN-N浆液,CGN-G浆液的流变指数、流动度、泌水率平均降低3.28%、7.50%、83.62%,稠度系数平均增大3.28%;扫描电镜和颗粒分析试验揭示颗粒微观形貌、比表面积、颗粒堆积状态是影响烧料礓石-遗址土裂隙注浆浆液流变性能、流动性以及泌水稳定性的重要因素.证明CGN-G浆液具备更为均衡的工作性能,适宜作为土遗址裂隙注浆材料.
In order to scientifically reveal the working performance of fissure grouting slurry calcined ginger nuts modified by earthen site's soil,we analyzed the effects of different water solid ratios,slurry ratios,slurry compositions(calcined ginger nuts modified by natural earthen site's soil(CGN-N),calcined ginger nuts modified by grinding earthen site's soil(CGN-G))on the rheological performance,fluidity and bleeding stability of slurry.The results showed that the consistency coefficient of CGN-G and CGNN slurry increased with the decrease in the water-solid ratio and slurry ratio,while the fluidity and bleeding rate behaved in the opposite.Compared with CGN-N slurry,the rheological index,fluidity and bleeding rate of CGN-G slurry were reduced by 3.28%,7.50%and 83.62%on average,and the consistency coefficient was increased by 3.28%on average.Scanning electron microscope and particle analysis revealed that particle micro-morphology,specific surface area and particle stacking state were important factors affecting the working performance of its slurry.It is proved that CGN-G slurry has a more balanced working performance and is suitable as a grouting material for cracks in soil sites.
作者
文鑫
王南
张景科
陈银桥
张浩
邱启波
WEN Xin;WANG Nan;ZHANG Jing-ke;CHEN Yin-qiao;ZHANG Hao;QIU Qi-bo(College of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China;Gansu Provincial Institute of Cultural Relics and Archaeology,Lanzhou 730000,China;Key Laboratory of Mechanics on Disaster and Environment in Western China with the Ministry of Education,Lanzhou University,Lanzhou 730000,China)
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第5期664-670,680,共8页
Journal of Lanzhou University(Natural Sciences)
基金
国家重点研发计划项目(2020YFC1520700)
兰州大学中央高校基本科研业务费专项资金项目(lzujbky-2022-22)
甘肃省重点研发计划项目(23YFFA0008)。
关键词
土遗址
烧料礓石
注浆浆液
工作性能
颗粒级配
earthen site
calcined ginger nut
grouting slurry
working performance
particle gradation
