BEHAVIOUR OF REINFORCEMENT IN RCC STRUCTURE WHEN SUBJECTED TO FIRE
Iliyas khaleel
, Er. Anand
Reinforcement, heat, ductility, tensile, strength.
As we all aware that hazards of major fires and fire mishaps are increasing day by day in structures. Therefore evaluation, rehabilitation and repair of structures damaged by fire have become a newsworthy. Effect of fire is most serious potential risk to most of RCC STRUCTURE. In today’s world concrete is most widely used in construction field. So, for researchers to make concrete fire resistant has become tropical interest. In many country’s several researchers did researches on this topic. In this area Research and developmental efforts are continuously being carried out and other disciplines are also trying to research on this topic .The reality of actual life issue are expressed which gives us real feeling in this topic. From this research we would be familiar on the absolute approach for the rehabilitation of structure damaged due to fire. Also express a particular evaluation and procedures by conducting some techniques known as NDT, and recovering method. To find out the effect of the fire on reinforcement steel bars we performed some experiment on 6 samples, each bar heated to 150°, 350°, 650°, 950° centigrade temperature. After heating all samples are rapidly cooled in water by quenching and under air cooling also by normal process. Observed properties of samples changed(mechanical) by using universal testing machine (UTM) and grain size and grain structure is studied by scanning electron microscope (SEM) that is known as microscopic study. We conclude that more than half of RC structures are restorable which are damaged due to fire. As the temperature increases mechanical properties of material decreases. Analysis of structure in fire conditions is done by testing the properties of the composing materials, steel and concrete, at elevated temperature. By the effects of heating, steel and concrete have certain change in their strength, physical properties, and stiffness and some are repairable and some not after consequent cooling. The reinforcement bars when exposed to elevated temperature above 950°C was observed that ductility reduced when rapidly cooled by water. The bar which is cooled under normal atmospheric conditions the impact of temperature on ductility is not high. Mechanical properties can be altered without changing the chemical constituent by heating the reinforcement bars.
"BEHAVIOUR OF REINFORCEMENT IN RCC STRUCTURE WHEN SUBJECTED TO FIRE", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.3, Issue 5, page no.412 - 415, May-2018, Available :https://ijsdr.org/papers/IJSDR1805060.pdf
Volume 3
Issue 5,
May-2018
Pages : 412 - 415
Paper Reg. ID: IJSDR_180276
Published Paper Id: IJSDR1805060
Downloads: 000347302
Research Area: Engineering
Country: -, -, --
ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator
Publisher: IJSDR(IJ Publication) Janvi Wave
