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为探究环氧灌浆料在石英砂界面的吸附特性,利用石英砂制作填砂模型,以吸附量为指标,着重考察注浆压力、含水率、温度等对环氧灌浆料在石英砂界面吸附特性的影响。试验结果表明:环氧灌浆料在石英砂界面的吸附量随着注浆压力(p<0.7 MPa时)的升高先增大,而后当注浆压力超过一定值(p>0.8 MPa)时浆液吸附量随注浆压力升高而逐渐减少;由于环氧树脂和水分子的竞争性吸附关系,浆液吸附量随石英砂含水率的提高而减少,最终达到稳定值;由于浆液吸附受分子活性及浆液黏度的双重影响,浆液吸附量随温度的升高逐渐减少。研究结果可为灌浆工程中注浆压力控制、温度控制及浆液改性等方面提供借鉴。
In order to explore the adsorption characteristics of epoxy grouting material on the interface of quartz sand, the sand filling model was made by using quartz sand. The adsorption capacity was taken as an indicator to study the adsorption characteristics of epoxy grouting material on the interface of quartz sand with grouting pressure, water content and temperature Impact. The experimental results show that the adsorption capacity of epoxy grouting material at the interface of quartz sand firstly increases with the increase of grouting pressure (p <0.7 MPa), and then increases with the increase of grouting pressure (p> 0.8 MPa) As the pressure of grouting increases, it gradually decreases. Due to the competitive adsorption between epoxy resin and water molecules, the adsorption capacity of slurry decreases with the increase of quartz sand moisture content, and finally reaches a steady value. Because the adsorption of slurry is affected by molecular activity and slurry viscosity , The amount of sorption decreased gradually with the increase of temperature. The results can provide reference for grouting pressure control, temperature control and slurry modification in grouting project.