温度对国产滤纸率定曲线的影响研究

发布时间：2018-05-18 23:42

  本文选题：温度效应 + 滤纸法　； 参考：《岩土力学》2016年S1期

【摘要】：滤纸法是一种间接测量非饱和土吸力的测量方法,在用滤纸测定土壤吸力之前需获得能够表达吸力与滤纸含水率之间关系的率定曲线。国内外的研究人员对Whatman No.42、SchleicherSchuell No.589和国产"双圈"牌定量滤纸的率定曲线已有研究,但是考虑到温度效应的滤纸率定曲线研究还有待深入。采用不同摩尔浓度的Na Cl溶液测定了国产双圈203滤纸分别在20℃、25℃、30℃、40℃下的滤纸吸湿过程的率定曲线,结果表明滤纸的持水性随着温度的升高而降低,且温度对低吸力段滤纸持水性能的影响要高于高吸力段。通过多元线性回归分析建立了考虑温度效应的率定方程,通过微观结构观测和表面物理化学理论分析了温度对率定曲线影响机制。
[Abstract]:Filter paper method is a kind of indirect measurement method to measure the suction of unsaturated soil. Before using filter paper to measure the soil suction, we need to obtain the ratio curve which can express the relationship between suction and moisture content of filter paper. Researchers at home and abroad have studied the rate-setting curve of Whatman No. 42 Schleicher Schuell No.589 and the domestic "double loop" brand quantitative filter paper, but the study of the filter paper rate curve considering the temperature effect has yet to be further studied. The moisture absorption rate curves of domestic double-loop 203 filter paper at 20 鈩，

本文编号：1907755