| 海砂氯离子与水泥胶体结合的模拟实验与结合机理 |
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| 引用本文： | 刘军,董必钦,邢锋,刘伟,霍元.海砂氯离子与水泥胶体结合的模拟实验与结合机理[J].硅酸盐学报,2009,37(5). |
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| 作者姓名： | 刘军 董必钦 邢锋 刘伟 霍元 |
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| 作者单位： | 深圳市土木工程耐久性重点实验室,深圳大学土木工程学院,广东,深圳,518060 |
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| 基金项目： | 国家自然科学基金，国家科技支撑计划 |
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| 摘 要： | 采用一定浓度的NaCl溶液浸泡河砂模拟海砂.研究矿物细掺料对模拟海砂氯离子与水泥胶体结合的影响.结合扫描电镜观察和元素扫描结果,对氯离了在砂了周围的迁移和结合规律进行了描述.结果表明:氯离子的结合率与水泥水化产物有关,砂浆的氯盐浓度对氯离子和水泥的最终结合率影响不大,普通辟酸盐水泥的氯离了稳定后的结合率在60%左右;粉煤灰的掺入降低了水泥结合氯离子的能力,掺量越大,氯离子结合能力下降 得越多;偏高岭上对水泥氯离子结合能力的影响不明显;海砂型与内掺型的氯离子扩散、结合方式有所不同,存在从海砂表面到水泥凝胶内部的渗透 过程.
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| 关 键 词： | 氯离子 海砂 粉煤灰 偏高岭土 结合过程及机理 |
SIMULATION EXPERIMENT AND MECHANISM OF THE COMBINING OF SEA SAND TYPE CHLORINE IONS IN CEMENT MATERIALS |
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| LIU Jun,DONG Biqin,XING Feng,LIU Wei,HUO Yuan.SIMULATION EXPERIMENT AND MECHANISM OF THE COMBINING OF SEA SAND TYPE CHLORINE IONS IN CEMENT MATERIALS[J].Journal of The Chinese Ceramic Society,2009,37(5). |
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| Authors: | LIU Jun DONG Biqin XING Feng LIU Wei HUO Yuan |
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| Affiliation: | The Key Lab on Duribility of Civil Engineering in Shenzhen;School of Civil Engineering;Shenzhen University;Shenzhen 518060;Guangdong;China |
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| Abstract: | The influence of mineral admixture on the combining procedure and mechanism of the combining of sea sand type chloride ions and cement material were studied using river sands infused by different concentrations of NaCl-water solution as analogue material.According the results of scanning electron microscopy and energy dispersive spectroscopy analysis,the migration and combination of Clcombing at the surface of sand was characterized.The experimental results show that there are significant differences in the... |
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| Keywords: | chlorine ion sea sand fly ash metakaolin combining procedure and mechanism |
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