الفهرس | Only 14 pages are availabe for public view |
Abstract Increasing the movement of goods on Egyptian roads network and the increase in fuel prices lead to increase truck loads on roads causing several harmful effects. An urgent need to treat the current road sections against these effects and to define a new design axle load for Egyptian roads becomes essential. The main objective of this study is to investigate the recommended common design axle load. To predict the common design axle load, real weighting of truck axles was conducted on representative sample for Egyptian roads in weight stations. The most important objective of this study is to investigate the effect of using steel wire grid reinforcement on the performance of pavement sections. The reinforced pavement sections are mode led and analyzed using two- dimensional finite elements method and three-dimensional finite elements method. Study was using the ADINA finite element program. In this study three paving sections were analyzed. The first section represents one of the commonly sections used in the paving of local roads, the second section is commonly used in expressways and the third section is used in freeways. The reinforcement was arranged at different depths. Steel wire grid reinforced sections results are compared to geosynthetics grid reinforced sections as well as typical rigid pavement section commonly used in Egypt. A comparison between the results of the two-dimensional finite elements models (2-D-FEM) and Three- dimensional Finite elements models (3-D-FEM) were obtained. Finally, comparison between the allowed legal axle load and common design axle load. The analysis showed that the best location of reinforcement is at bottom of base layer in all investigated pavement sections. Comparisons show that steel mesh reinforced sections performance improved than |