發(fā)布時間：2018-05-18 23:42

  本文選題：溫度效應(yīng) + 濾紙法�。� 參考：《巖土力學》2016年S1期

【摘要】：濾紙法是一種間接測量非飽和土吸力的測量方法,在用濾紙測定土壤吸力之前需獲得能夠表達吸力與濾紙含水率之間關(guān)系的率定曲線。國內(nèi)外的研究人員對Whatman No.42、SchleicherSchuell No.589和國產(chǎn)"雙圈"牌定量濾紙的率定曲線已有研究,但是考慮到溫度效應(yīng)的濾紙率定曲線研究還有待深入。采用不同摩爾濃度的Na Cl溶液測定了國產(chǎn)雙圈203濾紙分別在20℃、25℃、30℃、40℃下的濾紙吸濕過程的率定曲線,結(jié)果表明濾紙的持水性隨著溫度的升高而降低,且溫度對低吸力段濾紙持水性能的影響要高于高吸力段。通過多元線性回歸分析建立了考慮溫度效應(yīng)的率定方程,通過微觀結(jié)構(gòu)觀測和表面物理化學理論分析了溫度對率定曲線影響機制。
[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，

本文編號：1907755