摘要
为提升水利工程注浆止水堵漏效果,配制了一种丙烯酸盐注浆材料,并对其在不同温度热氧环境下的老化性能进行试验研究。结果表明:丙烯酸盐注浆材料固砂体强度指标随着老化时间的延长近似呈指数型函数降低;温度越高,丙烯酸盐注浆材料的高分子化合物发生裂解的速度加快,网状结构破坏程度越高,强度指标下降幅度越大;在橡胶材料老化模型基础上,结合试验数据,提出丙烯酸盐注浆材料固砂体指数型老化模型,该模型可反映不同热氧环境下固砂体强度指标随时间的变化关系,拟合相关性R~2可达到0.9以上。根据老化模型分析得出,在20℃的理想热氧环境中使用100年,丙烯酸盐注浆材料固砂体的强度指标下降幅度未超过10%,表明该类型材料在水利工程中的抗老化性能优异。
In order to improve the water stop and plugging effect of grouting in hydraulic engineering,an acrylate grouting material was prepared,and its aging performance under different temperature and hot oxygen environment was experimentally studied.The results show that the strength index of sand consolidation body of grouting material decreases approximately exponentially with the extension of aging time;The higher the temperature is,the faster the cracking rate of polymer compound of acrylate grouting material is,the higher the damage degree of network structure is,and the greater the decrease range of strength index is;Based on the rubber material aging model and combined with the test data,an exponential aging model of sand consolidation body of acrylate grouting material is proposed.The model can reflect the change relationship of sand consolidation body strength index with time under different thermal oxygen environment,and the fitting correlation R~2 can reach more than 0.9.According to the analysis of aging model,it is pointed out that the decrease of strength index of acrylic sand grouting material is not more than 10%after 100 years of use in the ideal hot oxygen environment at 20℃,indicating that the material has excellent anti-aging properties in hydraulic engineering.
作者
刘伟
LIU Wei(Shandong Linyi Water Conservancy Engineering Corporation,Linyi 276000,Shandong,China)
出处
《合成材料老化与应用》
2022年第5期72-75,共4页
Synthetic Materials Aging and Application
关键词
水利工程
止水堵漏
丙烯酸盐注浆材料
热氧环境
老化性能
模型
hydraulic engineering
water stop and plugging
acrylate grouting material
hot oxygen environment
aging performance
model
