EFFECT OF SOIL STRENGTHENING ON RIGID PAVEMENT THICKNESS | ||||
| Journal of Al-Azhar University Engineering Sector | ||||
| Article 19, Volume 13, Issue 46, January 2018, Page 46-56 PDF (1.4 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/auej.2018.19088 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Ibrahim Mohamed Ramadan1; Zainab Salah El-Din Hussein2; Omar Mokhtar Mohamady3 | ||||
| 1Civil engineering Department, Faculty of engineering at Shoubra, Benha University, Cairo, Egypt. | ||||
| 2Material properties and testing, Housing and Building National Research Center, Cairo, Egypt | ||||
| 3B.Sc., Civil Engineering Department, Faculty of engineering at Shoubra, Benha University, Cairo, Egypt | ||||
| Abstract | ||||
| The aim of this study is to evaluate the effect of strengthen of soil under concrete slab on its thickness. Rigid pavement strength depends on the rigidity of concrete slab in addition to the effect of soil strength. This research tries to study strengthen of soil under rigid pavement using different compositions of coarse and fine aggregate. The term which expresses soil strength in the AASHTO design equation is the value of the modulus of subgrade reaction (K). Various compositions of fine and coarse aggregate have been tested in the lab. Each sample has been analysed in term of sieve analysis and California bearing ratio (CBR). Using CBR value for each sample and AASHTO equation, the modulus of subgrade reaction has been estimated. Using the estimated value of modulus of subgrade reaction and AASHTO design method for rigid pavement the slab thickness has been estimated for each case. Results have been analysed to get the effect of best composition of coarse and fine aggregate under rigid pavement. | ||||
| Keywords | ||||
| Rigid pavement; Concrete slab thickness; California Bearing Ratio; Modulus of subgrade reaction; Coarse and fine aggregate; Soil strengthening | ||||
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