纳米技术和可持续发展混凝土:独特的新兴组合（英文）

发布时间：2018-05-26 21:34

本文选题：纳米技术 + 可持续发展混凝土　；参考：《硅酸盐学报》2015年10期

【摘要】：在混凝土中加入少量的、至少在一个维度内为纳米尺度(100 nm)的材料,就可能实现某种性能的提升,达到普通材料无法实现的效果。纳米二氧化硅、纳米碳酸钙、纳米碳管和纤维在改进混凝土性能方面受到越来越多的关注。涂料中二氧化钛纳米粒子可以捕获和分解有机和无机污染物,并使外露的混凝土表面实现自清洁。纳米技术和纳米材料可以使钢筋抗腐蚀能力增强。总的来讲,纳米技术能够使混凝土结构的使用周期中实现包括物质和能量消耗的最小化,同时减少建筑物对环境的负面影响,最终实现建筑物使用中的舒适性和友好性。尽管纳米材料和纳米技术在混凝土结构中有较好的前景,但目前对此类新型材料的对混凝土长期性能了解较少,特别是对其毒性方面的了解更少。随着公众对建筑物各方面安全性越来越关注,需要制定相应的毒性测试分析方法,建立更安全的生产工艺,并在混凝土结构中使用更环保的纳米材料。对纳米技术应用于建筑工业中是否能够真正意义上实现可持续发展进行了综述。
[Abstract]:Adding a small amount of material in concrete with at least one dimension of nanoscale (100 nm), it is possible to achieve a certain performance improvement, which can achieve the effect that ordinary materials cannot achieve. Nano-silica, nano-calcium carbonate, carbon nanotubes and fibers have attracted more and more attention in improving the performance of concrete. Titanium dioxide nanoparticles in coatings can capture and decompose organic and inorganic pollutants and self-clean exposed concrete surfaces. Nanotechnology and nanomaterials can enhance the corrosion resistance of steel bars. In general, nanotechnology can minimize material and energy consumption in the life cycle of concrete structures, reduce the negative impact of buildings on the environment, and ultimately achieve comfort and friendliness in the use of buildings. Although nanomaterials and nanotechnology have good prospects in concrete structures, the long-term properties of concrete are less well known about these new materials, especially about their toxicity. As the public pays more and more attention to the safety of various aspects of buildings, it is necessary to formulate the corresponding toxicity test and analysis methods, to establish safer production processes, and to use more environmentally friendly nano-materials in concrete structures. This paper reviews whether the application of nanotechnology in building industry can realize sustainable development in real sense.
【作者单位】： Conmat
【分类号】：TB383.1;TU528

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