Preparation and Performance of Ternary Early Strength Agent and Quercetin Composite Cement Sealing Material  

作　　者：LIU Jian CHEN Meiting JI Xiaoli XU Chao WANG Chunmei 刘健;吉小利(Department of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;Key Laboratory of Mine Safety and High Efficient Mining Jointly Built by Province and Education Ministry,Anhui University of Science and Technology,Huainan 232001,China;Department of Chemical Engineering and Explosives,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]Department of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China [2]Key Laboratory of Mine Safety and High Efficient Mining Jointly Built by Province and Education Ministry,Anhui University of Science and Technology,Huainan 232001,China [3]Department of Chemical Engineering and Explosives,Anhui University of Science and Technology,Huainan 232001,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2025年第1期130-140,共11页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Key Technologies Research and Development Program(No.2021YFC28000900);the National Natural Science Foundation of China(No.52374178);the Collaborative Innovation Project of Colleges and Universities of Anhui Province(No.GXXT-2020-057)。

摘　　要：A ternary early-strengthening agent consisting of calcium formate+triethanolamine+lithium sulfate was compounded with quercetin to shorten the setting time of cementitious materials while ensuring their early strength.The optimum ratio of the three early-strengthening agents was determined as 0.5%calcium formate+0.04%triethanolamine+0.4%lithium sulfate by response surface methodology.The effects of the ternary early-strengthening agent composed of calcium formate+triethanolamine(TEA)+lithium sulfate on cementitious pore sealing materials under the synergistic effect of quercetin were studied by means of the performance tests of compressive strength,fluidity,and setting time,and the microstructural characterizations of X-ray powder diffractometer(XRD),thermogravimetry(TG-DSC)and scanning electron microscopy(SEM).The study shows that the synergistic effect of ternary early-strengthening agent and quercetin forms a multi-performance composite admixture for cementitious materials.The best performance was obtained with the compounding scheme of 0.5%calcium formate+0.04%triethanolamine+0.4%lithium sulfate ternary early-strengthening agent and 0.05%quercetin.The compressive strength of 1,3,7,and 28 d are 94.8%,39.8%,42%,and 28%higher than those of the blank group,respectively.The initial time and final setting time are 41 and 57 minutes,respectively.According to the microscopic analysis,the network and fibrous C-S-H gels generated by ternary early-strengthening agents are attached to the surface promoted by quercetin,which forms skeleton support while thickening and solidifying the cement slurry,which enhances the early compressive strength of the cement-based materials.

关 键 词：sealing material ternary early-strengthening agent QUERCETIN synergetic effect response surface methodology 

分 类 号：TB42[一般工业技术] TE37[石油与天然气工程—油气田开发工程]