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Study on Carbonation Resistance of Polymer-Modified Sulphoaluminate Cement-Based Materials

The use of tricyclic copolymer latex (AMPS) can effectively improve the carbonation resistance of sulphoaluminate cement. This paper investigated polymer AMPS and polycarboxylic acid to modify sulphoaluminate cement materials by exploring the carbonation level of sulphoaluminate cement paste and mor...

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Autores principales: Zhang, Ping, Zhang, Bingxin, Fang, Yanfeng, Chang, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738528/
https://www.ncbi.nlm.nih.gov/pubmed/36500132
http://dx.doi.org/10.3390/ma15238635
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author Zhang, Ping
Zhang, Bingxin
Fang, Yanfeng
Chang, Jun
author_facet Zhang, Ping
Zhang, Bingxin
Fang, Yanfeng
Chang, Jun
author_sort Zhang, Ping
collection PubMed
description The use of tricyclic copolymer latex (AMPS) can effectively improve the carbonation resistance of sulphoaluminate cement. This paper investigated polymer AMPS and polycarboxylic acid to modify sulphoaluminate cement materials by exploring the carbonation level of sulphoaluminate cement paste and mortar and the strength before and after carbonation. Then, the optimal dosage of polymer and polycarboxylic acid was obtained so that the carbonation resistance of sulphoaluminate cement reached the best state. The compressive strength was significantly improved by adding AMPS for sulphoaluminate cement paste and mortar. After carbonation, the strength decreased and combined with the carbonation level; it was concluded that the carbonation resistance of sulphoaluminate cement materials was the best when the optimal dosage of AMPS and polycarboxylic acid was 5% and 1.8%, respectively. Due to the addition of AMPS, the hydrated calcium aluminosilicate (C-A-S-H) and hydrated calcium silicate (C-S-H) gels, generated by the hydration of sulphoaluminate cement and the surface of unreacted cement particles, are wrapped by AMPS particles. The water is discharged through cement hydration. The polymer particles on the surface of the hydration product merge into a continuous film, which binds the cement hydration product together to form an overall network structure, penetrating the entire cement hydration phase and forming a polymer cement mortar with excellent structural sealing performance. To prevent the entry of CO(2) and achieve the effect of anti-carbonation, adding polycarboxylic acid mainly improves the sample’s internal density to achieve the anti-carbonation purpose.
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spelling pubmed-97385282022-12-11 Study on Carbonation Resistance of Polymer-Modified Sulphoaluminate Cement-Based Materials Zhang, Ping Zhang, Bingxin Fang, Yanfeng Chang, Jun Materials (Basel) Article The use of tricyclic copolymer latex (AMPS) can effectively improve the carbonation resistance of sulphoaluminate cement. This paper investigated polymer AMPS and polycarboxylic acid to modify sulphoaluminate cement materials by exploring the carbonation level of sulphoaluminate cement paste and mortar and the strength before and after carbonation. Then, the optimal dosage of polymer and polycarboxylic acid was obtained so that the carbonation resistance of sulphoaluminate cement reached the best state. The compressive strength was significantly improved by adding AMPS for sulphoaluminate cement paste and mortar. After carbonation, the strength decreased and combined with the carbonation level; it was concluded that the carbonation resistance of sulphoaluminate cement materials was the best when the optimal dosage of AMPS and polycarboxylic acid was 5% and 1.8%, respectively. Due to the addition of AMPS, the hydrated calcium aluminosilicate (C-A-S-H) and hydrated calcium silicate (C-S-H) gels, generated by the hydration of sulphoaluminate cement and the surface of unreacted cement particles, are wrapped by AMPS particles. The water is discharged through cement hydration. The polymer particles on the surface of the hydration product merge into a continuous film, which binds the cement hydration product together to form an overall network structure, penetrating the entire cement hydration phase and forming a polymer cement mortar with excellent structural sealing performance. To prevent the entry of CO(2) and achieve the effect of anti-carbonation, adding polycarboxylic acid mainly improves the sample’s internal density to achieve the anti-carbonation purpose. MDPI 2022-12-03 /pmc/articles/PMC9738528/ /pubmed/36500132 http://dx.doi.org/10.3390/ma15238635 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Ping
Zhang, Bingxin
Fang, Yanfeng
Chang, Jun
Study on Carbonation Resistance of Polymer-Modified Sulphoaluminate Cement-Based Materials
title Study on Carbonation Resistance of Polymer-Modified Sulphoaluminate Cement-Based Materials
title_full Study on Carbonation Resistance of Polymer-Modified Sulphoaluminate Cement-Based Materials
title_fullStr Study on Carbonation Resistance of Polymer-Modified Sulphoaluminate Cement-Based Materials
title_full_unstemmed Study on Carbonation Resistance of Polymer-Modified Sulphoaluminate Cement-Based Materials
title_short Study on Carbonation Resistance of Polymer-Modified Sulphoaluminate Cement-Based Materials
title_sort study on carbonation resistance of polymer-modified sulphoaluminate cement-based materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738528/
https://www.ncbi.nlm.nih.gov/pubmed/36500132
http://dx.doi.org/10.3390/ma15238635
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