论文部分内容阅读
针对水玻璃-水泥(soluble glass-cement,SC)注浆材料在地层加固过程中抗水溶蚀性能差和工业废渣得不到有效利用等问题,用工业废渣完全取代SC注浆材料中的水泥制备出水玻璃-工业废渣(矿渣、钢渣、粉煤灰)(soluble glass-activated industrial residue slag,SAS)注浆材料。模拟淡水侵蚀环境,对SAS和SC两体系注浆材料进行了水溶蚀试验研究,结果表明SAS系列抗水溶蚀性能优于SC系列的。在水溶蚀作用180d条件下,SAS注浆材料的强度无损失,而SC系列结石体强度损失率达50%;SAS系列的Si溶出量、溶出物质总量和电导率等都低于SC系列的。压汞法、X射线衍射、扫描电镜测试结果也表明:SAS具有致密的微观结构和低溶解度的水化产物,从微观层次证明了SAS系列注浆材料的高抗水溶蚀性能。
Aiming at the problems that the grouting material of soluble glass-cement (SC) is poor in water-erosion resistance and industrial waste can not be effectively utilized in the process of stratum reinforcement, the industrial waste slag is completely replaced by the cement in SC grouting material Water glass - industrial waste slag (slag, slag, fly ash) (soluble glass-activated industrial residue slag, SAS) grouting material. Simulation of freshwater erosion environment, the SAS and SC grouting materials were water erosion test, the results show that the SAS series of water corrosion resistance superior to the SC series. Under 180d water dissolution, the strength of SAS grouting material was no loss, but the strength loss rate of SC series stones was 50%. The dissolution amount of Si, total amount of dissolved substances and conductivity of SAS series were lower than that of SC series . The results of mercury intrusion porosimetry, X-ray diffraction and scanning electron microscopy also show that SAS has a dense microstructure and low solubility of hydration products, and the microstructure shows the high water corrosion resistance of SAS grouting materials.