不锈钢渣水泥基材料抗碳化性能试验及预测模型分析Tests and predictive model analysis of carbonation resistance of stainless steel slag cement-based materials
董健苗,马东楊,顾业明,邹明璇,梁康,何其,韩金
摘要(Abstract):
利用不锈钢渣与矿渣制备不锈钢渣掺合料,开展其抗碳化性能试验。通过X射线衍射(XRD)、扫描电子显微镜(SEM)及气孔结构分析等手段对不锈钢渣水泥基材料的组成及微观形貌进行表征,结合力学性能研究其对碳化性能的影响,并建立碳化深度非线性回归预测模型。研究结果表明,随着不锈钢渣掺合料掺量的增加,水泥基材料的碳化深度增大,其中掺量为70%(T5组)试件的56 d碳化深度达21.5 mm,是空白组的3.4倍。微观结构分析表明,不锈钢渣掺合料掺量的增加导致水泥基材料孔隙增多。综合力学性能、碳化性能及微观结构分析,建议不锈钢渣掺合料掺量控制在50%以内。碳化深度预测模型的均方根误差(RMSE)为0.975 56 mm,平均绝对误差(MAE)为0.730 68 mm,决定系数(R~2)为0.911 42,表明该模型模拟值与实测值吻合良好,模型可信度高。
关键词(KeyWords): 不锈钢渣掺合料;不锈钢渣水泥基材料;碳化性能;微观结构;非线性回归预测模型
基金项目(Foundation): 国家自然科学基金项目(51568009);; 广西高校防灾减灾与预应力技术重点实验室开放基金项目(GXKDTJ005)资助
作者(Author): 董健苗,马东楊,顾业明,邹明璇,梁康,何其,韩金
DOI: 10.16375/j.cnki.cn45-1395/t.2026.03.006
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