【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.更多还原

【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.cement-stabilized-soil;humus;unconfined compression test;humic acid;fulvic acid更多还原