Effects of slag powder/metakaolin on the early performance of natural hydraulic lime
Natural Hydraulic Lime (NHL) has exceptional application in restoring ancient buildings compared to Portland cement and conventional air-hardening lime, but the characteristic of slow early performance development limits its fields of application. This paper studied the physical and mechanical prope...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2022-10-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2022.05.014 |
| _version_ | 1797989627767816192 |
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| author | Xu Dong Zhang Dajiang Wang Dongming Qi Guodong Zhang Shuai |
| author_facet | Xu Dong Zhang Dajiang Wang Dongming Qi Guodong Zhang Shuai |
| author_sort | Xu Dong |
| collection | DOAJ |
| description | Natural Hydraulic Lime (NHL) has exceptional application in restoring ancient buildings compared to Portland cement and conventional air-hardening lime, but the characteristic of slow early performance development limits its fields of application. This paper studied the physical and mechanical properties, hydration exothermic properties, phase composition and transformation, and microstructure evolution of slag powder/metakaolin composite NHL during the early hardening process. The influence of slag powder/metakaolin on the hardening process and performance development of NHL are systematically evaluated. Results show that slag powder can improve the fluidity of NHL-based mortar; slag powder/metakaolin generates calcium aluminate hydrate (C<sub>3</sub>AH<sub>6</sub>), calcium carboaluminate hydrate (C<sub>4</sub>A?H<sub>11</sub>) and calcium silicate hydrate (C—S—H) through pozzolanic reaction to promote the setting and hardening of NHL-based materials and significantly improve their compressive and flexural strength. This study provides reference for promoting the application of pozzolanic material composite NHL in the restoration of ancient buildings. |
| first_indexed | 2024-04-11T08:22:14Z |
| format | Article |
| id | doaj.art-44568cfcbc0a40049103a9b00d25e86f |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-11T08:22:14Z |
| publishDate | 2022-10-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-44568cfcbc0a40049103a9b00d25e86f2022-12-22T04:34:52ZengEmergency Management Press矿业科学学报2096-21932022-10-017563264210.19606/j.cnki.jmst.2022.05.01420220514Effects of slag powder/metakaolin on the early performance of natural hydraulic limeXu Dong0Zhang Dajiang1Wang Dongming2Qi Guodong3Zhang Shuai4School of Chemical and Environmental Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaFaculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaNatural Hydraulic Lime (NHL) has exceptional application in restoring ancient buildings compared to Portland cement and conventional air-hardening lime, but the characteristic of slow early performance development limits its fields of application. This paper studied the physical and mechanical properties, hydration exothermic properties, phase composition and transformation, and microstructure evolution of slag powder/metakaolin composite NHL during the early hardening process. The influence of slag powder/metakaolin on the hardening process and performance development of NHL are systematically evaluated. Results show that slag powder can improve the fluidity of NHL-based mortar; slag powder/metakaolin generates calcium aluminate hydrate (C<sub>3</sub>AH<sub>6</sub>), calcium carboaluminate hydrate (C<sub>4</sub>A?H<sub>11</sub>) and calcium silicate hydrate (C—S—H) through pozzolanic reaction to promote the setting and hardening of NHL-based materials and significantly improve their compressive and flexural strength. This study provides reference for promoting the application of pozzolanic material composite NHL in the restoration of ancient buildings.http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2022.05.014natural hydraulic limeslag powdermetakaolinpozzolanic reactionearly performance |
| spellingShingle | Xu Dong Zhang Dajiang Wang Dongming Qi Guodong Zhang Shuai Effects of slag powder/metakaolin on the early performance of natural hydraulic lime 矿业科学学报 natural hydraulic lime slag powder metakaolin pozzolanic reaction early performance |
| title | Effects of slag powder/metakaolin on the early performance of natural hydraulic lime |
| title_full | Effects of slag powder/metakaolin on the early performance of natural hydraulic lime |
| title_fullStr | Effects of slag powder/metakaolin on the early performance of natural hydraulic lime |
| title_full_unstemmed | Effects of slag powder/metakaolin on the early performance of natural hydraulic lime |
| title_short | Effects of slag powder/metakaolin on the early performance of natural hydraulic lime |
| title_sort | effects of slag powder metakaolin on the early performance of natural hydraulic lime |
| topic | natural hydraulic lime slag powder metakaolin pozzolanic reaction early performance |
| url | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2022.05.014 |
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