文章信息/Info

Title:

Research Advances on Performance Optimization of Cementitious Materials using Nanomaterials

作者:

嚴涵; 冉千平;  舒鑫;  于誠;  楊勇;  劉加平

(1.江蘇蘇博特新材料股份有限公司 高性能土木工程材料國家重點實驗室，江蘇 南京 211100)
(2.東南大學 材料科學與工程學院，江蘇 南京 211189)

Author(s):

Yan Han;  Ran Qianping;  Shu Xin;  Yu Cheng;  Yang Yong;  Liu Jiaping

(1. Jiangsu Sobute New Materials Co. Ltd., Nanjing 211100, China)
(2. School of Materials Science & Engineering, Southeast University, Nanjing 211100, China)

關鍵詞:

水泥基材料; 納米材料; 力學性能; 耐久性; 分散性

Keywords:

Cementitious Materials;  Nanomaterials;  Mechanical Property;  Durability;  Dispersity

文獻標志碼:

A

摘要:

近年來高鐵跨海大橋等大型工程建設對水泥基材料的性能提出了更高的要求。納米科技與納米材料是從微觀角度提升水泥基材料性能的重要手段，近年來，以納米二氧化硅、納米碳酸鈣、碳納米管、石墨烯等為代表的納米材料在水泥基材料的性能優化方面的研究有了長足的進展。目前的研究進展表明，納米材料主要從數個方面提升水泥基材料的性能，包括加速水化，提升早期強度；改善水化產物的組成與形貌，增加水泥基材料微結構密實度，提升力學性能與耐久性。就性能優化程度而言納米材料在本領域具有巨大的應用潛力。同時，分散性問題是目前納米材料在水泥基材料中應用面臨的主要問題，提供成熟可商業化的分散性解決方案是納米材料應用中亟待解決的問題。此外，目前對于用于水泥混凝土的納米材料的結構設計與改性方面的研究也有可以繼續挖掘的空間。

Abstract:

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 has made significant progresses in applying nanomaterials such as nano silica, nano calcium carbonate, carbon nanotube and grapheme in cementitious systems. Present 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 applausible. 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 is still to be further explored.