纳米材料优化水泥基材料性能的研究进展

发布时间：2018-06-20 13:09

本文选题：水泥基材料 + 纳米材料　；参考：《中国材料进展》2017年09期

【摘要】：近年来高铁、跨海大桥等大型工程建设对水泥基材料的性能提出了更高的要求。纳米科技与纳米材料是从微观角度提升水泥基材料性能的重要手段,近年来,以纳米二氧化硅、纳米碳酸钙、碳纳米管、石墨烯等为代表的纳米材料在水泥基材料性能优化方面的研究有了长足的进展。目前的研究进展表明,纳米材料可以从多方面提升水泥基材料的性能,包括加速水化,提升早期强度;改善水化产物的组成与形貌,增加水泥基材料微结构密实度,提升力学性能与耐久性。就性能优化程度而言纳米材料在本领域具有巨大的应用潜力。同时,分散性问题是目前纳米材料在水泥基材料中应用面临的主要问题,提供成熟可商业化的分散性解决方案是纳米材料应用中亟待解决的问题。此外,目前对于用于水泥混凝土的纳米材料的结构设计与改性方面的研究也有可以继续深化的空间。
[Abstract]:In recent years, the construction of high-speed rail and sea-crossing bridges has put forward higher requirements for the performance of cement-based materials. Nanotechnology and nanomaterials are important means to improve the properties of cement-based materials from a micro perspective. In recent years, nano-silica, nano-calcium carbonate, carbon nanotubes, The research on the performance optimization of cement-based materials represented by graphene and other nano-materials has made great progress. The current research progress shows that nano-materials can improve the properties of cement-based materials in many ways, including accelerating hydration, enhancing early strength, improving the composition and morphology of hydration products, and increasing the density of microstructures of cement-based materials. Improve mechanical properties and durability. In terms of the degree of performance optimization, nanomaterials have great application potential in this field. At the same time, the dispersion problem is the main problem in the application of nanomaterials in cement based materials at present. It is urgent to solve the problem of providing mature and commercialized dispersibility solutions in the application of nanomaterials. In addition, there is room for further research on the structural design and modification of nanomaterials used in cement concrete.
【作者单位】：江苏苏博特新材料股份有限公司高性能土木工程材料国家重点实验室;东南大学材料科学与工程学院;
【基金】：国家杰出青年科学基金项目(51225801) 国家自然科学基金-青年基金项目(51408273) 江苏省自然科学基金-青年基金项目(BK20131013)
【分类号】：TU528

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