水泥質材料中混合化學掺料不相容原因的探討

碩士 === 國立臺灣師範大學 === 化學系 === 98 === Mixing the Naphthalene sulfonate-based superplasticizer and the carboxylic-based superplasticizer in concrete let the workability be obvious worse. How to resolve this phenomenon is an important topic to this research. In this research, the first to use three k...

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Main Author: 胡翔皓
Other Authors: 許貫中
Format: Others
Language:zh-TW
Published: 2010
Online Access:http://ndltd.ncl.edu.tw/handle/23933090271799460428
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spelling ndltd-TW-098NTNU50650312015-10-13T18:35:09Z http://ndltd.ncl.edu.tw/handle/23933090271799460428 水泥質材料中混合化學掺料不相容原因的探討 胡翔皓 碩士 國立臺灣師範大學 化學系 98 Mixing the Naphthalene sulfonate-based superplasticizer and the carboxylic-based superplasticizer in concrete let the workability be obvious worse. How to resolve this phenomenon is an important topic to this research. In this research, the first to use three kinds of different combinative dosage of the mixed superplasticizer, respectively 1:3,1:1,3:1. The Naphthalene sulfonate-based superplasticizer compared to the carboxylic-based superplasticizer is 3:1,and then there are the worst cement paste’s fluidity. In the worst-flow condition(3:1), the research results show that changing the pH value of water of increase in the flow of cement paste and there is no apparent help. In the same conditions(3:1), the mixing superplasticizer in the water which have the visional precipitation when add NaCl and CaCl2 in the water. But while the same salt concentration add in the pure Naphthalene sulfonate-based superplasticizer and the carboxylic-based superplasticizer, there are no precipitation in both water solution. The experimental results show that mixed superplasticizer solution will be salting-out when there is more salt concentration in the solution. But adding 10mL acetone in the solution, the turbidity of solution will become decreasing which the turbidity result form the precipitation. To decreasing the salting-out result form the cement’s salt dissolving in the solution that can decrease cement workability.We replace 5mL water to 5mL acetone and the flow of cement paste is more increasing.This meaning that the workability of mixed superplasticizer is worse because of salting-out. 許貫中 2010 學位論文 ; thesis 95 zh-TW
collection NDLTD
language zh-TW
format Others
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description 碩士 === 國立臺灣師範大學 === 化學系 === 98 === Mixing the Naphthalene sulfonate-based superplasticizer and the carboxylic-based superplasticizer in concrete let the workability be obvious worse. How to resolve this phenomenon is an important topic to this research. In this research, the first to use three kinds of different combinative dosage of the mixed superplasticizer, respectively 1:3,1:1,3:1. The Naphthalene sulfonate-based superplasticizer compared to the carboxylic-based superplasticizer is 3:1,and then there are the worst cement paste’s fluidity. In the worst-flow condition(3:1), the research results show that changing the pH value of water of increase in the flow of cement paste and there is no apparent help. In the same conditions(3:1), the mixing superplasticizer in the water which have the visional precipitation when add NaCl and CaCl2 in the water. But while the same salt concentration add in the pure Naphthalene sulfonate-based superplasticizer and the carboxylic-based superplasticizer, there are no precipitation in both water solution. The experimental results show that mixed superplasticizer solution will be salting-out when there is more salt concentration in the solution. But adding 10mL acetone in the solution, the turbidity of solution will become decreasing which the turbidity result form the precipitation. To decreasing the salting-out result form the cement’s salt dissolving in the solution that can decrease cement workability.We replace 5mL water to 5mL acetone and the flow of cement paste is more increasing.This meaning that the workability of mixed superplasticizer is worse because of salting-out.
author2 許貫中
author_facet 許貫中
胡翔皓
author 胡翔皓
spellingShingle 胡翔皓
水泥質材料中混合化學掺料不相容原因的探討
author_sort 胡翔皓
title 水泥質材料中混合化學掺料不相容原因的探討
title_short 水泥質材料中混合化學掺料不相容原因的探討
title_full 水泥質材料中混合化學掺料不相容原因的探討
title_fullStr 水泥質材料中混合化學掺料不相容原因的探討
title_full_unstemmed 水泥質材料中混合化學掺料不相容原因的探討
title_sort 水泥質材料中混合化學掺料不相容原因的探討
publishDate 2010
url http://ndltd.ncl.edu.tw/handle/23933090271799460428
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