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http://dx.doi.org/10.5762/KAIS.2013.14.11.5947

An analytical Study for the Development of Highly Elastic Material applicable for Joint in Modular Pavement  

Lee, Young-Ho (Structural Engineering Research Division, Korea Institute of Construction Technology)
Kang, Su-Tae (Department of Civil Engineering, Daegu University)
Song, Jae-Joon (Structural Engineering Research Division, Korea Institute of Construction Technology)
Lee, Sang-Yoon (Structural Engineering Research Division, Korea Institute of Construction Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.11, 2013 , pp. 5947-5955 More about this Journal
Abstract
This study was intended to estimate the axial deformation of joint between pavement modules in the rapid-constructible modular pavement system, and to investigate the applicability of two-phase composites for a joint material, which was composed of cement paste, epoxy, or polyurethane as a matrix and sand as particles. A case which had supports under the pavement module as well as a case which the module was put on roadbed directly were considered in FEM analysis for the axial deformation. The effect of self-weight, live load, thermal change, and drying shrinkage were estimated and the thermal change was found to cause the largest deformation compared to the others. Deformation capacity of two-phase composites was predicted using the modified shear-lag model. In the analytical results for the elastic modulus and maximum tensile strain with different volume fractions of sand, 20~30 % replacement of sand was revealed to satisfy the required strain capacity with economy when if the width of joint was designed to be 15~20 mm.
Keywords
Modular pavement; Joint; Two-phase composites; Modified shear-lag model; Polyurethane;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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