POTENTIAL USE OF MINES AND QUARRIES SOLID WASTE IN ROAD CONSTRUCTION AND AS REPLACEMENT SOIL UNDRE FOUNDATIONS | ||||
| JES. Journal of Engineering Sciences | ||||
| Article 7, Volume 42, No 4, July and August 2014, Page 1094-1105 PDF (956.9 K) | ||||
| Document Type: Research Paper | ||||
| DOI: 10.21608/jesaun.2014.115043 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Ahmed Abdul Mageed Ahmed1; Khairy Hassan Abdel kareem2; Ahmed Mohamed Altohamy3; Sherein Ahmed Mohamed Rizk4 | ||||
| 1Prof.of Mineral Processing, Assiut univ., Faculty of Eng., Mining and Metal. Dept. | ||||
| 2Prof. of concrete structures, Assiut univ., Faculty of Eng., Civil Dept. | ||||
| 3Assistant Prof. of Soil and Foundation ,Beni -Suef univ., Faculty of Eng., Civil Dept | ||||
| 4Assistant lecturer, Ph.D. researcher, Beni-Suef univ., Faculty of Eng., Civil Dept. | ||||
| Abstract | ||||
| In Egypt, large quantities of coarse solid wastes are produced annually during the processing of phosphate ores and quarrying operations of marble and granite rocks. These wastes are stored in piles around or near mine sites, which are aesthetically unattractive and often degrading the environment. Various solutions have been sought for this major environmental problem and the best solution found is recycling. However, these wastes , because of their similarity to the conventional aggregates , represent a potentially useful source of material for a variety of applications ( in roadbed and dam construction , as railroad ballast ,as aggregate in concrete and asphalt mixes , …) The main purpose of this research is to investigate the possibility of utilizing the above mentioned three waste materials in road construction (base and sub base) and as a replacement layers for the problematic soil in foundations. Experimental tests were carried out on these wastes to assess their physical, mechanical and chemical properties, according to the Egyptian standards. The modified proctor and California bearing ratio (CBR) are the most important tests of soil compaction to assess the suitability of any waste materials. The CBR value of phosphate waste is 88% , 95% for crushed marble and about 41% for crushed granite. The obtained results proved that these kinds of wastes can be used in base and sub-base layers in road construction and as replacement soil under foundations. The potential uses of these wastes are considered beneficial from the economic and environmental points of view and saving the natural resources of aggregate. | ||||
| Keywords | ||||
| Phosphate processing wastes; Marble and Granite wastes; Waste recycling; Road construction; Environmental cleaning; Resources conservation | ||||
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