| 腐殖酸对水泥土强度的影响 |
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| 引用本文： | 邵玉芳,龚晓南,徐日庆,刘增永.腐殖酸对水泥土强度的影响[J].江苏大学学报(自然科学版),2007,28(4):354-357. |
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| 作者姓名： | 邵玉芳 龚晓南 徐日庆 刘增永 |
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| 作者单位： | 1. 浙江大学,生物系统工程系,浙江,杭州,310029
2. 浙江大学,土木工程学系,浙江,杭州,310027 |
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| 摘 要： | 通过无侧限抗压强度试验,研究了腐殖酸质量分数、胡敏酸质量分数、富啡酸质量分数、水泥掺入比、水灰比、龄期等因素对含腐殖酸水泥土强度的影响.结果表明:胡敏酸对水泥土强度的影响大于富啡酸;当其他条件相同时,含腐殖酸(质量分数为5%)水泥土的无侧限抗压强度是普通水泥土的1/3左右;水灰比从0.40提高到0.75的过程中,含腐殖酸水泥土的强度起初随着水灰比的增大而提高,当水灰比超过一定值(0.65)后,随着水灰比的增大,强度大幅度下降;含腐殖酸水泥土的强度随龄期的增长速度大大低于普通水泥土,表明腐殖酸的影响并不会随龄期而减小.
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| 关 键 词： | 水泥土 腐殖酸 无侧限抗压强度 胡敏酸 富啡酸 腐殖酸 水泥土强度 影响 strength humus 速度 增长 定值 过程 无侧限抗压强度试验 条件 结果 因素 水灰比 水泥掺入比 富啡酸 胡敏酸 质量分数 研究 |
| 文章编号： | 1671-7775（2007）04-0354-04 |
| 修稿时间： | 2006-11-14 |
Effect of humus on strength of cement-stabilized-soil |
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| SHAO Yu-fang,GONG Xiao-nan,XU Ri-qing,LIU Zeng-yong.Effect of humus on strength of cement-stabilized-soil[J].Journal of Jiangsu University:Natural Science Edition,2007,28(4):354-357. |
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| Authors: | SHAO Yu-fang GONG Xiao-nan XU Ri-qing LIU Zeng-yong |
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| Institution: | 1. Department of Biosystems Engineering, Zhejiang University, Hangzhou, Zhejiang 310029, China; 2. Department of Civil Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China |
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| Abstract: | Effects of various factors such as humus, humic acid, fulvic acid, water cement ratio and age on cement-stabilized-soil were studied. Results showed that humic acid is more significant than fulvic acid in decreasing the strength of cement-stabilized-soil. At the same mixing ratio of cement, the unconfined compression strength of cement-stabilized-soil which contains 5% of humus is only 1/3 of the normal cement-stabilized-soil. When the water cement ratio varies from 0.4 to 0.75, the strength of cement- stabilized-soil increases ; but after the ratio reached to 0.65, the strength begins to decrease rapidly. The strength increase of humus-containing cement-stabilized-soil by the age is less than the normal cement-stabilized-soil, which means that the effect of humus would not be alleviated with age. |
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| Keywords: | cement-stabilized-soil humus unconfined compression test humic acid fulvic acid |
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