EFFECT OF HIGH TEMPERATURE ON THE MECHANICAL STRENGTH OF RUBBERIZED CONCRETE MORTAR | ||
| ERJ. Engineering Research Journal | ||
| Article 8, Volume 31, Issue 3, July 2008, Pages 299-306 PDF (326.97 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/erjm.2008.69550 | ||
| Authors | ||
| M. H. Seleem; M. M. Balah; h. S. Khali; E. Zaki | ||
| EngineehgMaterials Department, Facully of Engineering, Zagmig University, Egypt | ||
| Abstract | ||
| The development of environmentally accepted methods of used tire disposal is one of the greatest challenges that waste management exped face today. When building materials are subjected to fire and exposed to cooling, some changes may occur in their characteristics; such as phase transformation, weight loss, aggregate-cement bond, etc., which directly affects on its chemical stability and mechanical properties. In the present investigation, the effect of high temperature of the compressive and tensile strengths af concrete mortar fabricated fiom ground waste tire nibber (GWTR) as a paaial replacement of total fine aggregate ('FA), sand, was experimentally investigated. The percentages by volume of GWTRITFA were, 0%, 5%, lo%, 15% and 20%. All mortar samples were prepared and cured using tap water for 28 days, then kept in 1ab;oratory atmosphere until the beginning of the test. The specimens were subjected to different.target temperatures of 100, 200, 300,400 and 500°C. After reaching to the desired target temperature, the specimens were sustained at hesired temperature for 2 hours. After heating the specimens wae allowed to cool at room temperature until the date of the test. The test results showed that all mortar specimens exposed to high temperature suffered a significant decrease in both compressive and tensile strengths. Replacing sand by 5-10% GWTR recorded the highest relative compressive strength, while replacing sand by 10-15% GWTR recorded the highest relative tensile strength' compared with other replacement ratios. The mass loss increased with increasing of temperature up to 500°C and GWTR %. In addition, at high temperature 500°C it was noticed that no cracks appeared on the surface of specimens. | ||
| Keywords | ||
| Ground lire rubber; Mortar; High temperature; Compressive strength; tensile strength | ||
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