Characterization of the Layered Pavement by Modelling and Calibration of Resilient Modulus
American Journal of Civil Engineering
Volume 2, Issue 3, May 2014, Pages: 74-86
Received: Apr. 11, 2014; Accepted: Apr. 28, 2014; Published: May 10, 2014
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Author
Ahmed Ebrahim Abu El-Maaty Behiry, Faculty of Engineering, Minufiya University, Shibeen El-kom, City, Egypt
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Abstract
Paving materials characterization in terms of resilient modulus (MR) has become crucial for pavement design and analysis. In fact, it is extremely difficult to measure MR in laboratory as well as in field. The main objective of this study is to achieve a basis for the performance based design specifications of flexible pavements in Egypt. Thus, a methodology of an experimentally program is presented to evaluate the deformation characteristics and develop a possible correlations between different characteristics of Egyptian pavement layers under various saturation degrees and compaction efforts. Calibration of the predicted models is investigated by using international correlations to substantiate their predictability and evaluate the feasibility of using one or more of those equations in predicting MR of Egyptian base, subbase or subgrade soil. The results show that the obtained base course model is close to the TRPL theoretical relationship while Georgia equation is suited for predicting MR of Egyptian subbase layer. For subgrade soil, the obtained equation should be used with caution. The predictive capability of the proposed models is proven for use in flexible pavement design in Egypt where CBR or modulus of subgrade reaction is expected to simplify the effort in determination of the MR.
Keywords
Resilient Modulus, California Bearing Ratio, Prediction Equations, Permanent Deformation
To cite this article
Ahmed Ebrahim Abu El-Maaty Behiry, Characterization of the Layered Pavement by Modelling and Calibration of Resilient Modulus, American Journal of Civil Engineering. Vol. 2, No. 3, 2014, pp. 74-86. doi: 10.11648/j.ajce.20140203.13
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