| 掺粉煤灰水泥砂浆抗稀硫酸侵蚀的试验研究 |
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| 引用本文： | 李燕涛,宋志刚,闵红光.掺粉煤灰水泥砂浆抗稀硫酸侵蚀的试验研究[J].环境科学与技术,2012,35(5):127-130. |
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| 作者姓名： | 李燕涛 宋志刚 闵红光 |
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| 作者单位： | 昆明理工大学建筑工程学院,云南昆明,650224 |
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| 基金项目： | 国家自然科学基金，云南省自然科学基金 |
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| 摘 要： | 为研究稀硫酸侵蚀掺粉煤灰水泥砂浆的规律,对砂浆试块进行长期浸泡试验,用滴酸法间接测得腐蚀速率并结合偏相关理论分析了影响砂浆试块腐蚀速率各个因素。分析表明:pH值相同时,粉煤灰掺量0%~30%的砂浆试块的腐蚀过程符合浓度边界层溶解反应模型;试块的流动度与抗腐蚀能力呈负相关;掺粉煤灰并不能明显改善水泥砂浆的抗稀硫酸侵蚀的性能。
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| 关 键 词： | 粉煤灰水泥砂浆 稀硫酸 腐蚀速率 扩散系数 |
Experiment and Study for Corrosion of Fly Ash Cement Mortar by Sulfuric Acid |
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| LI Yan-tao
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SONG Zhi-gang
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MIN Hong-guang.Experiment and Study for Corrosion of Fly Ash Cement Mortar by Sulfuric Acid[J].Environmental Science and Technology,2012,35(5):127-130. |
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| Authors: | LI Yan-tao SONG Zhi-gang MIN Hong-guang |
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| Institution: | (School of Civil Engineering and Architecture,Kunming University of Science and Technology,Kunming 650224,China) |
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| Abstract: | A long time immersion test of fly ash cement mortar in dilute sulfuric acid was carried out to study the mechanisms of corrosion-resistant.The rate of mortar corrosion was indirectly recorded and combining with the theory of partial correlation,the parameters that can affect the rate were obtained.It was showed that in soak solution with the same pH value,corrosion process of cement mortar with 0%~30% fly ash can reflect the dissolving reaction model of consistency boundary,with the fluidity of cement mortar inversely related to corrosion-resistant capability of cement mortar.The corrosion-resistant capability of cement mortar can not be improved remarkably by fly ash. |
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| Keywords: | fly ash cement mortar sulfuric acid rate of corrosion diffusion coefficient |
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