Proceedings of the Deep Mixing 2015 Conference, (DFI)
Effect of Binder Composition on the Secondary Compression of an Artificially Stabilized Soil
Paulo J. Venda Oliveira, University of Coimbra, Portugal; Antonio Alberto S. Correia, University of Coimbra, Portugal; Monica R. Garcia, Santarém, Portugal
The aim of this paper is to analyze the creep behavior of a Portuguese soft soil stabilized with binders in one-dimensional conditions, based on oedometer creep tests. The study focuses on the analysis of the effect of the binder content and binder type on the creep behavior of a stabilized soil. The results show that the best binder type for this soil, in terms of creep behavior, is composed of Portland cement and fly ash with a dry weight proportion of 75/25, as this promotes the development of secondary pozzolanic reactions. The results also show the decrease in the secondary compression index with the increment of the binder content, since it promotes an increase in the cementation bonds between soil particles. The general analysis of the results shows a clear dependence on Cá and qu, until values of qu of 1500 kPa; after that this relationship is negligible.
|article #2095; publication #1013 (DM-2015)|