Influence of silica-based hybrid material on the gas permeability of hardened cement paste

17th IUMRS International Conference in Asia

Li, R.^1,2 ; Hou, P.^1,2 ; Xie, N.^1,2 ; Zhou, Z.^1,2 ; Cheng, X.^1,2

School of Materials Science and Engineering, University of Jinan, Jinan

250022, China^1

Shandong Provincial Key Laboratory of Preparation, Measurement of Building Material, Jinan

250022, China^2

关键词: Cement based material;    Cementitious materials;    Gas transport properties;    Hardened cement paste;    Hybrid nanocomposites;    Inorganic hybrids;    Silica-based hybrid;    Surface treatment agents;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/182/1/012043/pdf
DOI  :  10.1088/1757-899X/182/1/012043

来源: IOP

【 摘 要 】

Surface treatment is one of the most effective ways to elongate the service life of concrete. The surface treatment agents, including organic and inorganic types, have been intensively studied. In this paper, the silica-based hybrid nanocomposite, which take advantages of both organic and inorganic treatment agents, was synthesized and used for surface treatment of hardened cement-based material. The effectiveness of organic and inorganic hybrid nanocomposite was evaluated through investigations on the gas permeability of cement-based materials. The results showed that SiO2/PMHS hybrid nanocomposite can greatly decrease the gas transport properties of hardened cement-based materials and has a great potential for surface treatment of cementitious materials.