A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The warp knitted bi-axial directionally oriented structure (DOS) reinforcement substrates applied to building construction are discussed in comparison to woven fabrics. One of usage barriers of reinforced cement with glass-grid is its sensitivity to alkali existed in the cement which will lead to the reduction of its service-life. There are some methods to improve its durability. Sol-gel- method is suitable for coating the surface of material. A panel is immersed into the sol. After the gel-derived film formed on the surface of it, the coated panel should be heated. Then coating is formed on it. The pre-hydrolytic solution of tetrabutyl titanate (TBT) or tetraethyl silicate (TEOS) should be prepared carefully so that uniform, clear and transparent solution can be obtained. The preparation of TBT solution must be processed without water. Thus the TBT must be added into absolute ethyl alcohol (EtOH). Then the well mixed solution is properly mixed with Methyl Methacrylate (MMA). The coated sheets are heated. TiO2-MMA or SiO2-MMA coating system has good resistance to alkali. MMA is served as an anti-alkali composition in the sol-gel coating method, which can enhance the toughness of the coating. Coated glass fibers have obvious reinforcement effect even after maintained in 80 deg C water. Usually, the reinforced effect can be kept for almost 40 years.
The warp knitted bi-axial directionally oriented structure (DOS) reinforcement substrates applied to building construction are discussed in comparison to woven fabrics. One of usage barriers of reinforced cement with glass-grid is its sensitivity to alkali existed in the cement which will lead to the reduction of its service-life. There are some methods to improve its durability. Sol-gel- method is suitable for coating the surface of material. A panel is immersed into the sol. After the gel-derived film formed on the surface of it, the coated panel should be heated. Then coating is formed on it. The pre-hydrolytic solution of tetrabutyl titanate (TBT) or tetraethyl silicate (TEOS) should be prepared carefully so that uniform, clear and transparent solution can be obtained. The preparation of TBT solution must be processed without water. Thus the TBT must be added into absolute ethyl alcohol (EtOH). Then the well mixed solution is properly mixed with Methyl Methacrylate (MMA). The coated sheets are heated. TiO2-MMA or SiO2-MMA coating system has good resistance to alkali. MMA is served as an anti-alkali composition in the sol-gel coating method, which can enhance the toughness of the coating. Coated glass fibers have obvious reinforcement effect even after maintained in 80 deg C water. Usually, the reinforced effect can be kept for almost 40 years.
Application of bi-axial warp knitted structures in concrete constructions
Die Anwendung von biaxialen Kettengewirkestrukturen im Betonbau
Journal of Dong Hua University. English Edition ; 18 ; 101-103
2001
3 Seiten, 5 Bilder, 2 Tabellen, 2 Quellen
Article (Journal)
English
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