复杂水溶液环境下灌浆材料耐侵蚀性能的试验研究

Experimental study on corrosion resistance of grouting materials in complex aqueous solution environment

通过研究复杂的水溶液环境对灌浆材料的力学性能和耐侵蚀性能的影响,探索灌浆材料在复杂水溶液中的力学性能和耐侵蚀性能的变化趋势。结果表明,灌浆材料浸入盐环境28 d后再放入NaOH水溶液对灌浆材料的抗压强度无不利影响,而先浸入NaOH水溶液而后浸入盐溶液中,对长期的抗压强度有不利的影响。灌浆材料除了在5%NaSO4侵蚀28 d后浸入10%NaOH水溶液的环境中的耐蚀系数在90、150 d时是小于1.0的,而在其他复杂水溶液环境及龄期下,灌浆材料的耐蚀系数均大于1.0,说明灌浆材料在除了在5%NaSO4侵蚀28 d后浸入10%NaOH水溶液的环境中都着优异的耐侵蚀能力。同时通过对灌浆材料的侵蚀截面图片进行对比,进而对灌浆材料的侵蚀情况进行分析。

By Studing the effect of complex aqueous solution environment on the mechanical properties and corrosion resistance of grouting material,to explore the changing trend of grouting material performance in complex aqueous solution.The results show that the compressive strength of the grouting material is not adversely affected by the immersion of the grouting material in the salt environment for 28 days and then in the NaOH aqueous solution,but first in the NaOH aqueous solution and then in the salt solution,has a detrimental effect on long-term compressive strength.The corrosion resistance coefficient of grouting material was less than 1.0 at 90 d and 150 d in the environment of 10%NaOH water solution after 28 days of 5%NaSO4 corrosion,and in the other kinds of complex water solution environment and age,the corrosion resistance coefficient of grouting materials were more than 1.0.The results showed that the grouting material had excellent corrosion resistance except in the environment where the grouting material was immersed in 10%NaOH solution after 28 days of 5%NaSO4 corrosion.At the same time,the erosion situation of grouting material is analyzed by the erosion section picture of grouting material.