碳酸钡对混凝土性能影响研究
Journal of Beijing University of Civil Engineering and Architecture(2023)
Abstract
将碳酸钡作为抗硫酸盐腐蚀剂,研究其对水泥胶砂强度和抗硫酸盐腐蚀性的影响,以及对混凝土强度和抗氯离子渗透性能影响,并通过红外测试探究影响机理.试验结果表明:随着碳酸钡掺量由3%增加到6%,水泥胶砂和混凝土强度呈现缓慢减少的趋势;胶砂抗压强度耐腐蚀系数显著提高,抗氯离子渗透性能提高.综合考虑对强度和耐久性的影响,碳酸钡掺量不超过4%.碳酸钡通过与石膏反应而减少钙矾石的生成,进而提高抗硫酸盐腐蚀性.
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