盐渍土地区输电线路基础混凝土抗硫酸盐腐蚀试验研究  

Experimental study on sulfate corrosion resistance of concrete of transmission line foundation in salt soil region

作　　者：汪春风 李志宏 张斌 马安刚 于本田[3] 王继林 

机构地区：[1]国网甘肃省电力公司经济技术研究院,甘肃兰州730030 [2]甘肃众联建设工程科技有限公司,甘肃兰州730070 [3]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《中国建材科技》2017年第6期54-57,共4页China Building Materials Science & Technology

摘　　要：为研究输电线路基础混凝土在硫酸盐腐蚀作用下的劣化规律,以盐渍土地区输电线路不同强度等级混凝土为研究对象,采用硫酸盐干湿循环的试验方法,测试了不同混凝土在标准养护条件和硫酸盐腐蚀条件下混凝土强度变化规律。研究结果表明:标准养护条件下,混凝土强度随龄期增长而提高;硫酸盐腐蚀条件下,混凝土强度随着干湿循环次数增加,表现为先提高后降低的规律,且混凝土强度等级越低,强度出现降低的转折点越早。In order to study on the deterioration of concrete of transmission line foundation in salt soil region, the method of sulfate wetting and drying cycle was used to test the influence of different concrete between standard curing conditions and sulfate corrosion. The results show that the strength of concrete increases with age under standard curing. Under the condition of sulfate corrosion, the strength of concrete increases and then decreases with the increase of the number of wet and dry cycles. The turning point in intensity of the lower strength concrete reduction occurs earlier.

关 键 词：混凝土 抗硫酸盐腐蚀 强度 劣化 

分 类 号：TU528[建筑科学—建筑技术科学]