RIA: Evaluation of Mechanics of Clays Based on Physical- Chemistry and Microstructure

这项研究将探讨物理的影响- 粘土的化学和微观结构对其力学性能的影响 特性. 以前的研究表明，沉积的影响， 环境和沉积后环境条件， 应力对工程性质有重要影响 和粘土体系的力学行为。 各参数之间 并且将要研究的性质是指数性质， 刚度、可压缩性、剪切强度和渗透性。 扫描电镜和X射线衍射技术 将被用来评估矿物学的影响， 微观结构对这些参数和行为的影响。 人工 预混合或渗透各种粘土的制备样品 污染化合物将受到许多 实验室测试、显微结构和矿物学分析， 如上所示。 样品将由以下人员制备： 泥浆固结大规模沉降 沉淀池 研究结果预计将进一步促进 理解微观与微观之间的复杂相互关系， 粘土系统的宏观性质，并帮助研究人员和 从业者更好地预测这种长期行为 面临快速变化的环境威胁的系统 条件

This research will investigate the influence of the physico- chemistry and microstructure of clays on their mechanical properties. Previous work indicates that the impact of depositional environment and post depositional environmental conditions and stresses may have significant influence on engineering properties and mechanical behavior of clay systems. Among the parameters and properties that will be investigated are index properties, stiffness, compressibility, shear strength and permeability. Scanning electron microscopy and X-ray diffraction techniques will be utilized to assess the effect of mineralogy, and microstructure on such parameters and behavior. Artificially prepared samples of clay premixed or permeated with various contaminating compounds will be subjected to a number of laboratory tests, microstructure and mineralogy analyses as indicated above. The samples will be prepared both by consolidating from slurry and sedimenting in a large scale sedimentation tank. The outcome of the research is anticipated to further the understanding of the complex interrelationships between micro and macro properties of clay systems and help researchers and practitioners to better predict long-term behavior of such systems under threat of rapidly changing environmental conditions.