Condition Assessment and Rehabilitation Measures for Fire Damaged Reinforced Concrete Supporting Structure of a Furnace

Author(s): Bhaskar Sangoju, Ramanjaneyulu K., Kanchanadevi A. and Saibabu S.
Paper category: Proceedings
Book title: Proceedings of International Conferences (ICACMS) Advances in Construction Materials and systems Vol 2
Editor(s): Manu Santhanam, Ravindra Gettu, Radhakrishna G. Pillai, Sunitha K. Nayar
ISBN: 978-2-35158-194-0
e-ISBN: 978-2-35158-191-9
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 592-600
Total Pages: 9
Language : English

Abstract: This paper presents the details of condition assessment of a fire damaged reinforced concrete (RC) supporting structure of an arc furnace. The arc furnace was placed over a thick RC slab which was supported by RC columns. During the process of operation, the bottom slab portion of arc furnace steel plate got punctured locally and the liquid hot metal at about 1400 ̊C came out through the hole provided in the slab and spread all over the floor. The condition assessment was carried out by using non-destructive and partially destructive testing such as visual inspection, rebound hammer (RH), ultrasonic pulse velocity (UPV), concrete core and rebar sampling. Low UPV values were recorded in some of the fire affected columns, which indicate delamination of cover concrete. Compressive strength of concrete and yield strength of reinforcement steel were evaluated. Analysis was carried out to check the structural adequacy and found that the RC supporting structure is structurally adequate for the given loading and existing strength. Necessary rehabilitaion measures were suggested.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00