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The Effect of Elevated Temperature on Bond Performance of Alkali-activated GGBFS Paste 被引量:2
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作者 郑文忠 朱晶 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2013年第4期721-725,共5页
The main reaction products were investigated by analysis of microstructure of alkali-activated ground granulated blast furnace slag (GGBFS) paste. An experimental research was performed on bond performance of alkali... The main reaction products were investigated by analysis of microstructure of alkali-activated ground granulated blast furnace slag (GGBFS) paste. An experimental research was performed on bond performance of alkali-activated GGBFS paste as a construction adhesive after exposure to 20-500℃. Through XRD analysis, a few calcium silicate hydrate, hydrotalcite and tetracalcium aluminate hydrate were determined as end products, and they were filled and packed each other at room temperature. In addition, akermanite dramatically increased at 800 ~C and above. The two key parameters, the ultimate load Pu.T and effective bond length Le, were determined using test data of carbon fiber-reinforced polymer (CFRP)-to-concrete bonded joints at elevated temperature. The experimental results indicate that the ultimate load Pu.T remains relatively stable initially and then decreases with increasing temperature. The effective bond length Le increases with increasing temperature except at 300℃. The proposed temperature-dependent effective bond length formula is shown to closely represent the test data. 展开更多
关键词 alkali-activated GGBFS paste MICROSTRUCTURE BOND effective bond length elevatedtemperature
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The Curing Process and Elastic Modulus of HTPB-Containing Polyurethanes
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作者 ZHENG Fu-an (East China Science and Technology University, Shanghai, 200237)SUN Jia-zhong (Institute of Theoretical Chemistry, Jilin University, Changchun, 130023)LUO Kui-de (Red Star Institute of Chemistry, Xiangfan, 441003) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1993年第4期345-350,共6页
By means of the functionality distribution deduced and weight averaged functionality a and molecular size vb2, the sol-gel distribution equations of HTPB(Hydroxyl terminated polybutadiene) + TDI (Toluene-2, 4-diisocya... By means of the functionality distribution deduced and weight averaged functionality a and molecular size vb2, the sol-gel distribution equations of HTPB(Hydroxyl terminated polybutadiene) + TDI (Toluene-2, 4-diisocyanate) expressed by the model of Aai-B2 type polycondensation were solved and the elastic modulus were calculated. The experimental results of HTPB+TDI curing process indicate that a, vb2 and functionality distribution function are available basically. 展开更多
关键词 Curing process Functionality distribution Weight average functionality effective length of bond
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