Determination of the Resilient modulus MR for the lime stabilized clay obtained from the repeated loading CBR tests
Journal Title: Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation - Year 2012, Vol 44, Issue 2
Abstract
The main aim of this paper is to prove that CBR repeated test is useful to give an adequate like Unconfined Cyclic Triaxial test parameters for design the pavement and subgrade soils. That parameter is the Resilient modulus (MR) which is the elastic modulus based on the recoverable strain under repeated load. Resilient modulus MR, is an important parameter which characterizes the subgrade’s ability to withstand repetitive stresses under traffic loadings. The 1993 AASHTO guide for design of flexible pavements recommends the use of MR. The additional aim is connected with the concept of sustainable development. For many countries, where resources are at premium, it is very important that stabilized local soil can be used for road construction. For ensuring that stabilized clay can be used for pavement material standard compaction, CBR and repeated CBR tests were performed. In that paper parameter MR of the subgrade lime stabilized clayey soil by laboratory CBR repeated test were determined using for calculation formulas from triaxial cyclic test. Based on AASHTO empirical equation the static CBR values using back analysis was also calculated. Finally both values of CBR determined and calculated were compared.
Authors and Affiliations
Wojciech SAS, Andrzej GŁUCHOWSKI, Alojzy SZYMAŃSKI
Keywords
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