摘要
随着我国建筑行业不断发展,传统混凝土性能已无法满足市场需求。现有研究发现,在混凝土制备过程中加入纳米材料可以对混凝土各方面性能加以改善。其中纳米SiO_(2)不仅来源广泛、经济性好,而且因其特殊的表面效应,对混凝土的力学性能,耐久性等均有较大提升。综述了目前国内外对纳米SiO_(2)增强混凝土在力学性能、耐久性能等方面的研究。且结合国内外现有试验成果,分析了纳米SiO_(2)粒径尺寸、掺量等影响因素对混凝土性能的影响。从微观角度分析纳米SiO_(2)在水泥水化过程中具体的作用机理并与宏观试验结果相互验证。最后总结了目前纳米SiO_(2)增强混凝土在研究及应用过程中存在的主要问题,为未来研究方向提出积极建议。
With the development of construction industry,the mechanical properties of ordinary concrete have been unable to satisfy the market′s demand.Researchers found that,adding nano-materials can improve the properties of concrete significantly.Nano-SiO_(2) was found to be a very extensive and effective additive to concrete for improving mechanical properties and durability.The replacement ratio and diameter of nano-SiO_(2) on mechanical properties and durability of concrete were explored.Additionally,the effects of nano-SiO_(2) on the microstructure of concrete hydration were discussed.So the primary purpose of this study was to point out effects of these factors one by one and delineate how the future research should be oriented.
作者
郑泽宇
陈信展
周聪
孔祥清
ZHENG Zeyu;CHEN Xinzhan;ZHOU Cong;KONG Xiangqing(Department of Civil&Architectural Engineering,Liaoning University of Technology,Jinzhou 121001,China)
出处
《混凝土》
CAS
北大核心
2022年第4期104-109,115,共7页
Concrete
基金
国家自然科学基金(51704029)
兴辽英才计划青年拔尖人才(XLYC1807044,XLYC1807050)。
