论文部分内容阅读
该文将粉质粘土、淤泥和粉砂等3种土体分别与水泥、氯化钙混合制备水泥土试样,测试其密度和无侧限抗压强度,以研究促凝剂对水泥土早期强度的影响。结果表明:水泥土重度比原状土略大1%~5%。促凝剂氯化钙能明显提高水泥土早期强度,后者随氯化钙掺量增大而增大;龄期较低时,掺入氯化钙,水泥土早期强度提高明显,特别是龄期为3 d时,强度可提高2~3倍;随着龄期增长,强度提高幅度逐渐减小。水泥土早期强度随龄期增长而增大,随土体含水量增大而减小。土体种类对水泥土早期强度影响较大,粉砂制成的水泥土早期强度最高,粉质粘土的居中,淤泥的最低。
In this paper, three kinds of soil such as silty clay, silt and silt were respectively mixed with cement and calcium chloride to prepare cement soil samples. The density and unconfined compressive strength were tested to study the effects of accelerators on the early age of cement soil. The impact of strength. The results show that the weight of cement soil is slightly larger than original soil by 1% ~ 5%. Accelerator calcium chloride can significantly improve the early strength of cement soil, which increases with the increase of calcium chloride content; age lower, incorporation of calcium chloride, cement soil early strength increased significantly, especially age The duration of 3 d, the intensity can be increased by 2 to 3 times; as the age increases, the intensity increases gradually reduced. The early strength of cement soil increases with age, but decreases with the increase of soil water content. The soil types had a great influence on the early strength of cement-soil, the early strength of cement-soil made of silt was the highest, the silty clay was the lowest and the silt was the lowest.