低湿变温环境对硫酸盐作用下水泥砂浆性能的影响OA北大核心CSTPCD
Effect of Low Humidity and Varying Temperature Environment on Performance of Cement under Sulfate Attack
基于西部钢筋混凝土基础设施所处环境特点,将水泥砂浆试件在低湿变温环境中进行半浸泡硫酸盐腐蚀,结合XRD、SEM、LF-NMR和电导滴定SO42-等测试手段研究了低湿变温环境对硫酸盐半浸泡腐蚀水泥基材料的影响.结果表明:对于低湿变温环境中的水泥砂浆试件,其液面以上30 mm内的水膜区硫酸盐腐蚀程度较低,而液面以上30～60 mm的蒸发区腐蚀程度较高,并出现明显剥落现象;饱和度较小的Na2SO4溶液对砂浆试件蒸发区的腐蚀更为严重;蒸发区1 000 n…查看全部>>
Based on environmental characteristics of reinforced concrete infrastructure in western China,cement mortar specimens were subjected to semi-immersed sulfate corrosion in low humidity and varying temperature.The influences of low humidity and varying temperature on semi-immersion sulfate attack cement-based materials were studied by combination of XRD,SEM,LF-NMR,and conductivity titration of sulfate ions.The results show that under low humidity and varying t…查看全部>>
贾艳涛;李之恒;王大富;吴萌
河海大学力学与材料学院,南京 211100东南大学材料科学与工程学院,南京 211189东南大学材料科学与工程学院,南京 211189东南大学材料科学与工程学院,南京 211189
土木建筑
矿物掺合料温度硫酸盐腐蚀SO42-孔径分布
mineral admixturetemperaturesulfate corrosionsulfate ionpore size distribution
《硅酸盐通报》 2024 (6)
1965-1974,10
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