江西建材Issue(1)：6-11,6.
改性超细水泥浆液物理力学性能试验研究
Experimental Study on the Physical and Mechanical Properties of Modified Ultra-fine Cement Slurry
摘要
Abstract
Aiming at the shortcomings of superfine cement slurry,the water extraction rate,fluidity,initial and final setting time,uniaxial com-pressive strength and expansion rate of modified superfine cement slurry were studied by adding different contents of expansion agent UEA,nano water reducing agent FDN-C and triisopropanolamine accelerating agent TIPA.The results show that with the addition of water reducer FDN-C increasing from 0 to 0.8 g,the minimum water extraction rate of modified superfine cement slurry is 17ml,which is 37.04%lower than that of pure superfine cement slurry,and the fluidity decreases from 234 mm to 183 mm.The initial setting time of(U30F0.4T4.0)ratio is the shortest,and the initial setting time is 506 min,which is 33.68%faster than that of pure ultrafine cement slurry.The peak 3 d com-pressive strength of the U30F0.8T4.0 ratio is 10.46 MPa,and the peak 28 d compressive strength of the U30F0.8T1.2 ratio is 8.1 MPa,and the strength of each age is not less than 2.5 MPa,which meets the engineering requirements.When the expansion agent UEA content is 10%,the expansion rate of the test block is the largest,and the expansion rate of the 3～28 d test block is 0.803%～0.956%higher than that of the pure ultra-fine cement test block.The research results can provide some reference for special grouting reinforcement and water sealing pro-jects.关键词
超细水泥/流动度/凝结时间/抗压强度/膨胀率Key words
Superfine cement/Fluidity/Setting time/Compressive strength/Expansion rate分类
建筑与水利引用本文复制引用
李良浩,冯啸,侯本敖,孙文..改性超细水泥浆液物理力学性能试验研究[J].江西建材,2024,(1):6-11,6.基金项目
国家自然科学青年基金《考虑渗滤效应的砂层注浆水泥浆液扩散与加固机理研究》(项目编号:52009075) （项目编号:52009075）
山东省自然科学青年基金《软弱砂土层渗透注浆中水泥颗粒运移-滤出规律及加固机理研究》(项目编号:ZR2020QE262). （项目编号:ZR2020QE262）
