蒸馏水中蒙脱石晶层间膨胀压力理论研究  

Theoretical Study on the Swelling Pressure of Montmorillonites Clay Layers Inundated with Distilled Water

作　　者：贾景超[1] 杨庆[1,2] 李强[3] 

机构地区：[1]大连理工大学土木水利学院岩土工程研究所,辽宁大连116024 [2]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [3]石家庄铁道学院土木工程分院,河北石家庄050043

出　　处：《矿物学报》2010年第1期63-66,共4页Acta Mineralogica Sinica

基　　金：国家自然科学基金资助项目(批准号:50679015)

摘　　要：蒙脱石颗粒周围的溶液浓度对其膨胀性有较大影响,传统的双电层模型可以对电解质环境下蒙脱石的膨胀特性做出较好的模拟,但并不适于蒸馏水的情况。针对膨润土在蒸馏水或纯水中已有的膨胀特性试验,本文在前人的研究基础上详细推导了蒸馏水中蒙脱石晶层间的膨胀压力模型,并给出一种简便算法。运用此算法可以避免非线性方程的求解,从而可以较方便的将膨胀力和晶层间距联系起来。The swelling character of montmorillonite particles was considerably influenced by the concentrations of solutions.Though the classic double layer model could better simulate swelling under the conditions of electrolyte solutions,it could not be applied to the swelling of montmorillonites inundated with distilled water.According to the experiments on the swelling characteristics of bentonites inundated with distilled water or pure water,the model to simulate the swelling pressure between paralleled crystal layers of montmorillonites under the conditions of distilled water was formed,and a simpler algorithm was presented.In this method,the nonlinear equations was not necessary to be solved,so the swelling pressures and the interlayer distances could be connected easily.

关 键 词：膨润土 蒙脱石 蒸馏水 双电层模型 膨胀压力 

分 类 号：P578.967[天文地球—矿物学] P579[天文地球—地质学]