الفهرس 
CAUSES OF INCREASED LOADS TRANSPORTED ON EGYPTIAN ROADSOnly 14 pages are availabe for public view
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Abstract
In recent years, the amount of goods transported on roads in Egypt has significantly increased, leading to a growing need for road improvement. Engineers have developed safe methods to build roads on soft soils, but designing highways on soft clay soil remains a challenging problem to solve. Common issues that arise include unstable roadbeds or excessive settlement. As a result, treating soft soil roadbeds has become increasingly important.
Improving the soft soil roadbeds in this way can offer several benefits. Firstly, it improves the overall safety of the road, reducing the risk of accidents caused by unstable road conditions. Secondly, it increases the durability of the road, reducing the need for frequent maintenance or costly repairs. Finally, it facilitates the safe and efficient transportation of goods and services, supporting economic growth and development.
To address this issue, a study was conducted to improve the clay soil using various techniques. Quicklime was used to stabilize the soft clay soil, while geogrid layers were employed to strengthen the base and sub base layers, increasing the overall strength of the pavement section to withstand heavy loads. To identify the best solutions for the problem, a finite element program (PLAXIS 2D) was utilized to simulate these improvement techniques.
The results of the study showed that improving a 60 cm layer of subgrade soil with quicklime, combined with adding a geogrid layer in the middle of the subbase layer, resulted in the best outcome by reducingmaximum settlement by more than 21%, reducing vertical Stress by more than 24 %, and reducing lateral strain by more than 67%.