發(fā)布時(shí)間：2018-01-03 02:26

  本文關(guān)鍵詞：基于晶層水化模型確定膨潤土的相對密度　出處：《巖石力學(xué)與工程學(xué)報(bào)》2016年08期 　論文類型：期刊論文

  更多相關(guān)文章： 土力學(xué) 膨潤土 相對密度 吸附水膜 層間水化

【摘要】：根據(jù)蒙脫石晶層間水化模型,建立采用脫氣純水作為溶劑的蒙脫石相對密度計(jì)算公式,該式表明蒙脫石總比表面積和吸附水膜厚度越大,其相對密度也越大。同時(shí)對乙二醇飽和不同初始含水率膨潤土,用X射線衍射儀測試了蒙脫石的晶層間距,發(fā)現(xiàn)其晶層厚度大致相同。對福建標(biāo)準(zhǔn)砂和高廟子鈣基膨潤土分別用煤油和脫氣純水2種溶劑進(jìn)行相對密度試驗(yàn),通過實(shí)測和計(jì)算相對密度值的比較,得到膨潤土的相對密度值與溶劑的種類有關(guān)的結(jié)論,以脫氣純水作為溶劑,比用煤油測得的膨潤土相對密度要大,驗(yàn)證了蒙脫石相對密度計(jì)算公式的合理性。
[Abstract]:Based on the interlayer hydration model of montmorillonite, a formula for calculating the relative density of montmorillonite using degassed pure water as solvent is established. The formula shows that the total specific surface area and the thickness of the adsorbent film are larger than that of montmorillonite. At the same time, the interlayer spacing of montmorillonite was measured by X-ray diffractometer for the bentonite saturated with different initial moisture content of ethylene glycol. It is found that the thickness of the crystal layer is about the same. The relative density tests of Fujian standard sand and Gaomiaozi calcium bentonite with kerosene and degassing pure water are carried out, and the relative density values are compared by measuring and calculating. It is concluded that the relative density of bentonite is related to the type of solvent. The relative density of bentonite measured by kerosene is higher than that of bentonite measured by kerosene, which verifies the rationality of the formula for calculating the relative density of montmorillonite.
【作者單位】： 上海大學(xué)土木工程系;臺(tái)州學(xué)院建筑工程學(xué)院;臺(tái)州學(xué)院醫(yī)藥化工學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(11272194;51578356) 浙江省自然科學(xué)基金項(xiàng)目(Y15E080014)~~
【分類號(hào)】：TU43
【正文快照】： Project supported by the National Natural Science Foundation of China(Grant Nos.11272194 and 51578356)and Zhejiang Provincial Natural ScienceFoundation of China(Grant No.Y15E080014)1引言因膨潤土具有極強(qiáng)吸水性、較大的膨脹性、極低的滲透性及較強(qiáng)吸附核素離子

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