Study on the Fire Resistance of Concrete with Chemical Admixture

碩士 === 國立臺灣科技大學 === 營建工程技術學系 === 82 === This study mainly investigates the influence of chemical admixture on the fire resistance of concrete . The type of admixture used are common in engineering field including type A,C,D,F and G. T...

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Main Authors: Chen-Nan Shen, 沈政南
Other Authors: Der-HSIEN Shen
Format: Others
Language:zh-TW
Published: 1994
Online Access:http://ndltd.ncl.edu.tw/handle/20730070192355525696
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spelling ndltd-TW-082NTUST5120632016-02-08T04:06:26Z http://ndltd.ncl.edu.tw/handle/20730070192355525696 Study on the Fire Resistance of Concrete with Chemical Admixture 化學摻料對混凝土耐火性能影響之探討 Chen-Nan Shen 沈政南 碩士 國立臺灣科技大學 營建工程技術學系 82 This study mainly investigates the influence of chemical admixture on the fire resistance of concrete . The type of admixture used are common in engineering field including type A,C,D,F and G. The specimens were made for macro/micro and mechanical property test. An electric furnace was used to simulate a high temperature environment. All the test results were compared with those of pure concrete(no chemical admixture) to assess the influence of chemical admixture on the fire resistance of concrete. This research also investigates the mechanism of fire resistance from the inserting of chemical admixture into the cement paste, mortar and concrete. The results show that chemical admixture except type A and type C has positive effect for the fire resistance on concrete, especially by adding superplasticizer(ie.type F) . According to XRD and SEM , superplasticizer can refine cement paste and reduce voids. Ultrasonic tests also prove that chemical admixture can improve the interfaces of aggregate in concrete. The residual strength reduction of concrete with chemiical admixture has been found slighter. The out-look is almost the same as that concrete with no chemical admixture. Der-HSIEN Shen 沈得縣 1994 學位論文 ; thesis 189 zh-TW
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language zh-TW
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description 碩士 === 國立臺灣科技大學 === 營建工程技術學系 === 82 === This study mainly investigates the influence of chemical admixture on the fire resistance of concrete . The type of admixture used are common in engineering field including type A,C,D,F and G. The specimens were made for macro/micro and mechanical property test. An electric furnace was used to simulate a high temperature environment. All the test results were compared with those of pure concrete(no chemical admixture) to assess the influence of chemical admixture on the fire resistance of concrete. This research also investigates the mechanism of fire resistance from the inserting of chemical admixture into the cement paste, mortar and concrete. The results show that chemical admixture except type A and type C has positive effect for the fire resistance on concrete, especially by adding superplasticizer(ie.type F) . According to XRD and SEM , superplasticizer can refine cement paste and reduce voids. Ultrasonic tests also prove that chemical admixture can improve the interfaces of aggregate in concrete. The residual strength reduction of concrete with chemiical admixture has been found slighter. The out-look is almost the same as that concrete with no chemical admixture.
author2 Der-HSIEN Shen
author_facet Der-HSIEN Shen
Chen-Nan Shen
沈政南
author Chen-Nan Shen
沈政南
spellingShingle Chen-Nan Shen
沈政南
Study on the Fire Resistance of Concrete with Chemical Admixture
author_sort Chen-Nan Shen
title Study on the Fire Resistance of Concrete with Chemical Admixture
title_short Study on the Fire Resistance of Concrete with Chemical Admixture
title_full Study on the Fire Resistance of Concrete with Chemical Admixture
title_fullStr Study on the Fire Resistance of Concrete with Chemical Admixture
title_full_unstemmed Study on the Fire Resistance of Concrete with Chemical Admixture
title_sort study on the fire resistance of concrete with chemical admixture
publishDate 1994
url http://ndltd.ncl.edu.tw/handle/20730070192355525696
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