基于晶层水化模型确定膨润土的相对密度

发布时间：2018-01-03 02:26

本文关键词：基于晶层水化模型确定膨润土的相对密度　出处：《岩石力学与工程学报》2016年08期 　论文类型：期刊论文

【摘要】：根据蒙脱石晶层间水化模型,建立采用脱气纯水作为溶剂的蒙脱石相对密度计算公式,该式表明蒙脱石总比表面积和吸附水膜厚度越大,其相对密度也越大。同时对乙二醇饱和不同初始含水率膨润土,用X射线衍射仪测试了蒙脱石的晶层间距,发现其晶层厚度大致相同。对福建标准砂和高庙子钙基膨润土分别用煤油和脱气纯水2种溶剂进行相对密度试验,通过实测和计算相对密度值的比较,得到膨润土的相对密度值与溶剂的种类有关的结论,以脱气纯水作为溶剂,比用煤油测得的膨润土相对密度要大,验证了蒙脱石相对密度计算公式的合理性。
[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.
【作者单位】：上海大学土木工程系;台州学院建筑工程学院;台州学院医药化工学院;
【基金】：国家自然科学基金资助项目(11272194;51578356) 浙江省自然科学基金项目(Y15E080014)~~
【分类号】：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引言因膨润土具有极强吸水性、较大的膨胀性、极低的渗透性及较强吸附核素离子

【相似文献】