Improving clay soil for Road Construction by adding mechanical additives
Supervisor Name
Amjad Issa
Supervisor Email
amjadissa@najah.edu
University
An-Najah National University
Research field
Civil Engineering
Bio
Dr. Amjad Issa Amjad Issa has a broad knowledge in the fields of civil engineering and studies in general, and the infrastructure engineering at specific. He is heading the Division of Construction Management at Universal Group and he is working at present as a Project Manager and Cost Engineer for various projects. He is the director of Construction and Transportation Research Unit An-Najah National University.
This study is trying to investigate the improvement of clayey soil for road subgrade construction by incorporating four mechanical additives: recycled asphalt pavement (RAP), sand, glass powder, and rubber. Laboratory tests evaluated the effects of these additives on the soil's engineering properties, including the California bearing ratio (CBR), swelling potential, maximum dry density (MDD), and plasticity index (PI). The students are currently working on utilizing different percentages of crushed glass and sand with clay soil. Currently, they are examining 60%, 10%, and 40%, 60-15-35, 60-20-20, 50-20-30, 50-25-25, etc.
