Affiliation:
1. Department of Geotechnical Engineering and Geosciences, Universitat Politecnica de Catalunya Barcelona, Spain
Abstract
The paper presents a macroscopic constitutive model for rockfill that includes the effect of water on compressibility and collapse phenomena. Breakage of rock particles and fracture propagation are basic underlying mechanisms controlled by the relative humidity of the air filling the rockfill voids. A conceptual deformation model based on these mechanisms is first proposed and discussed. The results of oedometer tests on a quartzitic slate rockfill, in which the air relative humidity was controlled, are then presented. A significant finding is that bringing the relative humidity within the specimen to its maximum (100% RH) leads to a collapse strain equal to that observed in flooded specimens. An elastoplastic constitutive model, consistent with the basic deformation framework, is developed. Its parameters have a clear physical meaning. Guidelines for parameter determination are given. Model performance is finally compared with the results of the experimental programme.
Subject
Earth and Planetary Sciences (miscellaneous),Geotechnical Engineering and Engineering Geology
Reference31 articles.
1. Subcritical crack growth in geological materials
2. THE THEORY OF SUBCRITICAL CRACK GROWTH WITH APPLICATIONS TO MINERALS AND ROCKS
3. Clements R. P. The deformation of rockfill: inter-particle behaviour, bulk properties and behaviour in dams. PhD thesis. 1981, Faculty of Engineering, King's College, University of London.
Cited by
110 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献