| 活性稻壳灰对混凝土强度和耐久性能的影响 |
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| 引用本文： | 余其俊,赵三银,冯庆革,杉田修一.活性稻壳灰对混凝土强度和耐久性能的影响[J].武汉理工大学学报,2003,25(2):15-19. |
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| 作者姓名： | 余其俊 赵三银 冯庆革 杉田修一 |
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| 作者单位： | 1. 华南理工大学
2. 日本八户工业大学 |
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| 摘 要： | 研究了高火山灰活性稻壳灰对混凝土强度和耐久性能的影响。结果表明：混凝土中掺加稻壳灰后强度提高，且高水胶比时强度提高率更大；同时，混凝土的抗盐酸溶液的侵蚀能力、抗碳化和抗渗性能也得到改善。其主要原因可归结为：稻壳灰的掺入降低了混凝土的实际水胶比，促进了水泥的水化，使混凝土中有更多的C—S—H凝胶生成，并减少了混凝土中羟钙石的数量，降低了混凝土细孔的平均尺寸，使得混凝土的结构更加密实。
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| 关 键 词： | 稻壳灰 抗酸侵蚀 抗渗性 碳化 孔径分布 活性 混凝土 强度 耐久性 |
| 文章编号： | 1671-4431(2003)02-0015-05 |
| 修稿时间： | 2002年12月5日 |
The Effect of Highly Reactive Rice Husk Ash on the Strength and Durability of Concrete |
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| Yu Qijun,Zhao Sanyin,Feng Qingge,Sugita Shuichi.The Effect of Highly Reactive Rice Husk Ash on the Strength and Durability of Concrete[J].Journal of Wuhan University of Technology,2003,25(2):15-19. |
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| Authors: | Yu Qijun Zhao Sanyin Feng Qingge Sugita Shuichi |
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| Affiliation: | Yu Qijun Zhao Sanyin Feng Qingge Sugita Shuichi |
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| Abstract: | The influence of highly reactive rice-husk ash(RHA)on the strength and durability of concrete was studied. The results show that with the replacement of cement with RHA in concrete, concrete strength is increased and the larger the water to cement and RHA ratio, the greater the strength-increasing ratio. The resistance of concrete to the attack by 2% HCl solution, carbonation, and penetration (chloride-ion, water, and air) can be also improved by RHA addition. These effects of RHA are mainly attributed to: practical water-cement ratio of concrete is decreased due to the addition of RHA; more C-S-H gel and less portlandite are formed in concrete; and the average pore size of concrete is reduced. |
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| Keywords: | rice husk ash acid resistance penetration carbonation pore size distribution |
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