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| 1 | Preparation and Performance Research of Cement-based Grouting Materials with High Early Strength and Expansion显示文摘Main performance of the cement grouting materials made up by Portland cement(PC) and sulphoaluminate cement(SAC) was investigated in this program, a kind of expanding agent(EA) which was mainly constituted by metakaolin and alunite was utilized for the compensation of the shrinkage, the hydration products and micro structure of the grouting materials were researched by X-ray diffraction(XRD) and scanning electron microscopy(SEM). The results showed that a high expansion rate of the grouting materials could be reached as the expanding agent mixed in 6% of PC mass; the addition of SAC in the S2(PC:SAC:EA=34:6:2.25) brought a further improvement of the expansion rate of the grouting materials, the analysis of XRD and SEM showed that due to the reaction of expanding agent and SAC in the grouting materials, more ettringite crystal was generated, which resulted in a higher early strength, the addition of SAC played an expansion and strength reinforcement role in the grouting materials. | 张毅 LI Wei 李东旭 | 2017 | Journal of Wuhan University of Technology(Materials Science)2017，32，5： | 4 |
| 2 | Experimental Study on Viscosity Characteristics of Expanding Polymer Grout显示文摘The viscosity evolution for different temperatures was studied experimentally.A time-varying viscosity model was derived and the influence of the initial temperature on gel time was analyzed.The experimental results show that the viscosity of polymer grout increases exponentially with time.It can be divided into two phases.Before gelation,the viscosity variable quantity is very small.At the gel point,there is a sudden increase in viscosity.The initial viscosity and gel time decrease with the increasing initial temperature within a certain range,The study contributes to deepening understanding of the rheological properties of polymer grout,which can provide some references for polymer grouting construction. | 郝梅美 李晓龙 WANG Xinling ZHONG Yanhui ZHANG Bei WANG Fuming 张玉龙 | 2021 | Journal of Wuhan University of Technology(Materials Science)2021，36，2： | 1 |
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