中文摘要：

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。

英文摘要：

In recent years, blooming construction of megaprojects has posed higher performance demand for cementitious materials. Nanoscience and nanomaterials are advisable approach to improve the performance of cementitious materials from a microscopic perspective. Recently, researchers have made significant progresses in applying nanomaterials such as nano silica, nano calcium carbonate, carbon nanotube and graphene in cementitious systems. Recent research progress has shown that nanomaterials improve cement ＆ concrete performance through three aspects： hydration acceleration, hydration product optimization and microstructure refinement. Considering the degree of performance optimization, the application potential of nanomaterials is applaudable. However, the dispersion problem of nanomaterials has to be further solved and commercialized dispersion technique should be proposed. Moreover, structural modification of nanomaterials for construction still need to be further explored.