Development and Characteristics of Aerated Alkali-Activated Slag Cement Mixed with Zinc Powder
Experiments on the development and properties of aerated concrete based on alkali-activated slag cement (AASC) and using Zn powder (ZP) as a gas agent were carried out. The experiments were designed for water-binding material (w/b) ratios of 0.35 and 0.45, curing temperatures of 23 ± 2 °C and 40 ± 2...
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2021
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oai:doaj.org-article:eab2a002978d44f0baf3794a299f7c052021-11-11T17:51:58ZDevelopment and Characteristics of Aerated Alkali-Activated Slag Cement Mixed with Zinc Powder10.3390/ma142162931996-1944https://doaj.org/article/eab2a002978d44f0baf3794a299f7c052021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6293https://doaj.org/toc/1996-1944Experiments on the development and properties of aerated concrete based on alkali-activated slag cement (AASC) and using Zn powder (ZP) as a gas agent were carried out. The experiments were designed for water-binding material (w/b) ratios of 0.35 and 0.45, curing temperatures of 23 ± 2 °C and 40 ± 2 °C, and ZP of 0.25%, 0.50%, 0.75%, and 1.0%. ZP generates hydrogen (H<sub>2</sub>) gas in AASC to form pores. At a w/b of 0.35, the curing temperature had little effect on the pore size by ZP. However, a w/b of 0.45 showed a clear correlation that the pore diameter increased as the curing temperature increased. The low w/b of 0.35 showed a small change in the pore size according to the curing temperature due to the faster setting time than 0.45 and the increased viscosity of the paste. Therefore, at a termination time exceeding at least 60 min and a w/b of 0.45 or more, it was possible to increase the size and expansion force of the pores formed by the ZP through the change of the curing temperature. ZP showed applicability to the manufacture of AASC-based aerated concrete, and the characteristics of foaming according to the curing temperature, w/b ratio, and ZP concentration were confirmed.Taewan KimChoonghyun KangKiyoung SeoMDPI AGarticlezinc powdergas agentalkali-activated slag cementhydrogen gasaerated concreteTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6293, p 6293 (2021) |
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DOAJ |
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DOAJ |
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EN |
| topic |
zinc powder gas agent alkali-activated slag cement hydrogen gas aerated concrete Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
| spellingShingle |
zinc powder gas agent alkali-activated slag cement hydrogen gas aerated concrete Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Taewan Kim Choonghyun Kang Kiyoung Seo Development and Characteristics of Aerated Alkali-Activated Slag Cement Mixed with Zinc Powder |
| description |
Experiments on the development and properties of aerated concrete based on alkali-activated slag cement (AASC) and using Zn powder (ZP) as a gas agent were carried out. The experiments were designed for water-binding material (w/b) ratios of 0.35 and 0.45, curing temperatures of 23 ± 2 °C and 40 ± 2 °C, and ZP of 0.25%, 0.50%, 0.75%, and 1.0%. ZP generates hydrogen (H<sub>2</sub>) gas in AASC to form pores. At a w/b of 0.35, the curing temperature had little effect on the pore size by ZP. However, a w/b of 0.45 showed a clear correlation that the pore diameter increased as the curing temperature increased. The low w/b of 0.35 showed a small change in the pore size according to the curing temperature due to the faster setting time than 0.45 and the increased viscosity of the paste. Therefore, at a termination time exceeding at least 60 min and a w/b of 0.45 or more, it was possible to increase the size and expansion force of the pores formed by the ZP through the change of the curing temperature. ZP showed applicability to the manufacture of AASC-based aerated concrete, and the characteristics of foaming according to the curing temperature, w/b ratio, and ZP concentration were confirmed. |
| format |
article |
| author |
Taewan Kim Choonghyun Kang Kiyoung Seo |
| author_facet |
Taewan Kim Choonghyun Kang Kiyoung Seo |
| author_sort |
Taewan Kim |
| title |
Development and Characteristics of Aerated Alkali-Activated Slag Cement Mixed with Zinc Powder |
| title_short |
Development and Characteristics of Aerated Alkali-Activated Slag Cement Mixed with Zinc Powder |
| title_full |
Development and Characteristics of Aerated Alkali-Activated Slag Cement Mixed with Zinc Powder |
| title_fullStr |
Development and Characteristics of Aerated Alkali-Activated Slag Cement Mixed with Zinc Powder |
| title_full_unstemmed |
Development and Characteristics of Aerated Alkali-Activated Slag Cement Mixed with Zinc Powder |
| title_sort |
development and characteristics of aerated alkali-activated slag cement mixed with zinc powder |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/eab2a002978d44f0baf3794a299f7c05 |
| work_keys_str_mv |
AT taewankim developmentandcharacteristicsofaeratedalkaliactivatedslagcementmixedwithzincpowder AT choonghyunkang developmentandcharacteristicsofaeratedalkaliactivatedslagcementmixedwithzincpowder AT kiyoungseo developmentandcharacteristicsofaeratedalkaliactivatedslagcementmixedwithzincpowder |
| _version_ |
1718432033638711296 |