| 纳米氧化物对水泥基料化学收缩的影响 |
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| 引用本文： | 刘春梅,赵秋松,王艳,段忠鑫,吴福飞.纳米氧化物对水泥基料化学收缩的影响[J].四川建材,2021(1). |
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| 作者姓名： | 刘春梅 赵秋松 王艳 段忠鑫 吴福飞 |
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| 作者单位： | 贵州师范大学材料与建筑工程学院 |
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| 基金项目： | 贵州师范大学2018年度“大学生科研训练计划”:纳米材料对水泥基材料化学收缩与孔隙率的影响(DK2018A050);贵州省教育厅青年科技人才成长项目:纳米材料对水泥基材料化学收缩与孔隙率的影响(黔教合KY字[2018]125号)。 |
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| 摘 要： | 采用ASTM化学收缩试验方法,研究纳米SiO2、MgO、Al2O3对水泥基材料化学收缩变化的影响,明确纳米材料种类的差异性。结果表明,各实验组水泥基材料化学收缩均经历三阶段:急速变化区、缓慢变化区、平稳区,7d始水泥基材料化学收缩基本稳定。几种纳米材料的最佳掺量对水泥基材料的化学收缩改善作用大小为:SiO2>Al2O3>MgO。研究发现,纳米材料种类和掺量的不同对化学收缩的影响也较大,在选用时,需综合考虑。
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| 关 键 词： | 水泥基 纳米材料 化学收缩 |
Effect of nano-oxide on the chemical shrinkage of cement-based materials |
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| LIU Chunmei,ZHAO Qiusong,WANG Yan,DUAN Zhongxin,WU Fufei.Effect of nano-oxide on the chemical shrinkage of cement-based materials[J].Sichuan Building Materials,2021(1). |
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| Authors: | LIU Chunmei ZHAO Qiusong WANG Yan DUAN Zhongxin WU Fufei |
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| Affiliation: | (School of Materials and Architectural Engineering,Guizhou Normal University,Guiyang 550025,China) |
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| Abstract: | The ASTM chemical shrinkage test method was used to study the effect of nano-SiO2,MgO,and Al2O3 on the chemical shrinkage changes of cement-based materials,and to clarify the differences in the types of nanomaterials.The results show that the chemical shrinkage of the cement-based materials in each experimental group has gone through three stages:rapid change zone,slow change zone,and stable zone.The chemical shrinkage of the cement-based material was basically stable at 7days.The optimal amount of several nano-materials to improve the chemical shrinkage of cement-based materials is:SiO2>Al2O3>MgO.The study found that the difference in the type and amount of nano-materials also has a greater impact on chemical shrinkage,which needs to be considered when selecting. |
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| Keywords: | cement-based nanomaterials chemical shrinkage |
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