Effects of sulfonated melamine formaldehyde on the setting of α-calcium sulfate hemihydrates(三聚氰胺减水剂对α半水石膏水化硬化过程的影响)
采用高磺化度三聚氰胺(Sulfonated melamine formaldehyde,SM)改良α半水石膏使用性能,研究了减水剂对石膏水化硬化过程的影响.首先测定了 SM对α半水石膏的减水效率,然后通过强度测试、热重分析和电镜扫描,揭示了 SM对α半水石膏强度发展过程、水化速度及硬化体亚微观结构的影响.结果表明,SM对α半水石膏的最大减水率为15.6%,对应最佳掺量为0.5%.经SM改性的α半水石膏其强度发展过程发生了变化,且2 h湿抗折和湿抗压强度、绝干抗折和抗压强度分别提高38%、29%、20%和27%.此外,SM能加速α半水石膏的水化,经其改性后的石膏硬化体结构中二水石膏晶体数量增多,...
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| Format: | Article |
| Language: | zho |
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Zhejiang University Press
2009-05-01
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| Series: | Zhejiang Daxue xuebao. Lixue ban |
| Subjects: | |
| Online Access: | https://doi.org/10.3785/j.issn.1008-9497.2009.03.017 |
| _version_ | 1797236119880859648 |
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| author | ZHANGJia-li(张佳莉) YEQing-qing(叶青青) WUZhong-biao(吴忠标) GUANBao-hong(官宝红) |
| author_facet | ZHANGJia-li(张佳莉) YEQing-qing(叶青青) WUZhong-biao(吴忠标) GUANBao-hong(官宝红) |
| author_sort | ZHANGJia-li(张佳莉) |
| collection | DOAJ |
| description | 采用高磺化度三聚氰胺(Sulfonated melamine formaldehyde,SM)改良α半水石膏使用性能,研究了减水剂对石膏水化硬化过程的影响.首先测定了 SM对α半水石膏的减水效率,然后通过强度测试、热重分析和电镜扫描,揭示了 SM对α半水石膏强度发展过程、水化速度及硬化体亚微观结构的影响.结果表明,SM对α半水石膏的最大减水率为15.6%,对应最佳掺量为0.5%.经SM改性的α半水石膏其强度发展过程发生了变化,且2 h湿抗折和湿抗压强度、绝干抗折和抗压强度分别提高38%、29%、20%和27%.此外,SM能加速α半水石膏的水化,经其改性后的石膏硬化体结构中二水石膏晶体数量增多,长径比明显减小,硬化体结构更为密实.因此,SM可用于改良α半水石膏,特别有利于提高石膏硬化体的强度. |
| first_indexed | 2024-04-24T16:58:48Z |
| format | Article |
| id | doaj.art-359b98450e04415f9a5fe938e189717f |
| institution | Directory Open Access Journal |
| issn | 1008-9497 |
| language | zho |
| last_indexed | 2024-04-24T16:58:48Z |
| publishDate | 2009-05-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | Zhejiang Daxue xuebao. Lixue ban |
| spelling | doaj.art-359b98450e04415f9a5fe938e189717f2024-03-29T01:58:27ZzhoZhejiang University PressZhejiang Daxue xuebao. Lixue ban1008-94972009-05-0136331832210.3785/j.issn.1008-9497.2009.03.017Effects of sulfonated melamine formaldehyde on the setting of α-calcium sulfate hemihydrates(三聚氰胺减水剂对α半水石膏水化硬化过程的影响)ZHANGJia-li(张佳莉)0YEQing-qing(叶青青)1WUZhong-biao(吴忠标)2GUANBao-hong(官宝红)Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China(浙江大学环境工程系，浙江 杭州 310027)Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China(浙江大学环境工程系，浙江 杭州 310027)Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China(浙江大学环境工程系，浙江 杭州 310027)采用高磺化度三聚氰胺(Sulfonated melamine formaldehyde,SM)改良α半水石膏使用性能,研究了减水剂对石膏水化硬化过程的影响.首先测定了 SM对α半水石膏的减水效率,然后通过强度测试、热重分析和电镜扫描,揭示了 SM对α半水石膏强度发展过程、水化速度及硬化体亚微观结构的影响.结果表明,SM对α半水石膏的最大减水率为15.6%,对应最佳掺量为0.5%.经SM改性的α半水石膏其强度发展过程发生了变化,且2 h湿抗折和湿抗压强度、绝干抗折和抗压强度分别提高38%、29%、20%和27%.此外,SM能加速α半水石膏的水化,经其改性后的石膏硬化体结构中二水石膏晶体数量增多,长径比明显减小,硬化体结构更为密实.因此,SM可用于改良α半水石膏,特别有利于提高石膏硬化体的强度.https://doi.org/10.3785/j.issn.1008-9497.2009.03.017α半水石膏高磺化度三聚氰胺改性强度发展水化速度亚微观结构 |
| spellingShingle | ZHANGJia-li(张佳莉) YEQing-qing(叶青青) WUZhong-biao(吴忠标) GUANBao-hong(官宝红) Effects of sulfonated melamine formaldehyde on the setting of α-calcium sulfate hemihydrates(三聚氰胺减水剂对α半水石膏水化硬化过程的影响) Zhejiang Daxue xuebao. Lixue ban α半水石膏 高磺化度三聚氰胺 改性 强度发展 水化速度 亚微观结构 |
| title | Effects of sulfonated melamine formaldehyde on the setting of α-calcium sulfate hemihydrates(三聚氰胺减水剂对α半水石膏水化硬化过程的影响) |
| title_full | Effects of sulfonated melamine formaldehyde on the setting of α-calcium sulfate hemihydrates(三聚氰胺减水剂对α半水石膏水化硬化过程的影响) |
| title_fullStr | Effects of sulfonated melamine formaldehyde on the setting of α-calcium sulfate hemihydrates(三聚氰胺减水剂对α半水石膏水化硬化过程的影响) |
| title_full_unstemmed | Effects of sulfonated melamine formaldehyde on the setting of α-calcium sulfate hemihydrates(三聚氰胺减水剂对α半水石膏水化硬化过程的影响) |
| title_short | Effects of sulfonated melamine formaldehyde on the setting of α-calcium sulfate hemihydrates(三聚氰胺减水剂对α半水石膏水化硬化过程的影响) |
| title_sort | effects of sulfonated melamine formaldehyde on the setting of α calcium sulfate hemihydrates 三聚氰胺减水剂对α半水石膏水化硬化过程的影响 |
| topic | α半水石膏 高磺化度三聚氰胺 改性 强度发展 水化速度 亚微观结构 |
| url | https://doi.org/10.3785/j.issn.1008-9497.2009.03.017 |
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