Design and Construction of Pedestal Retrofitting for Furnaces No. 1 to 4

Reinforcement of hot-rolling furnace pedestals at Mobarakeh Steel Company, the largest steel production company in Iran

The hot-rolling production hall at Mobarakeh Steel Complex is one of the most important units in this company. There are four main furnaces on roughly 116 pedestals with a height of 1500 mm in a part of this hall. Since these pedestals are all exposed to corrosion factors and some are also subject to vibration loads, structural retrofitting and anti-corrosion coatings were required.

Design and Construction of Pedestal Retrofitting for Furnaces No. 1 to 4

PROJECT DETAILS

PROJECT NAME	Design and Construction of Pedestal Retrofitting for Furnaces No. 1 to 4
EMPLOYER	Mobarakeh Steel Company
LOCATION	Mobarakeh
SERVICES	Chipping of Weak Concrete, Planting rebar, Injection into concrete, FRP Retrofitting

PROJECT HIGHLIGHTS

FRP reinforcement using grooving method (EBROG)

Challenges

As is mentioned, the cyclic loads result in fatigue in the furnace pedestals. Additionally, the bolts resisting these loads approach their point of failure over time, losing their load-bearing capacity. Moreover, various corrosion factors have also caused cracks on the concrete surface. In addition, the execution of the retrofitting beneath the furnaces involved various construction challenges, including low height, time limitations, and high temperature.

Solutions

After repairing the concretes using injection techniques, the FRP sheets were used along with the grooving method (GM) to retrofit the pedestals. This method, invented and patented by Koosheh experts, increases the loading capacity. Moreover, the concrete confinement method was applied to the pedestals to restore their strength. Finally, the concrete surface was coated using GRP to be protected against corrosion.

Results

In addition to repairing the concrete surface, the reinforcement process increased the capacity of the pedestals to resist fatigue. Moreover, the concrete surface was fully protected against corrosion by applying a GRP coating.

4.4/5 - (19 votes)

By مدیر وبسایت|August 19th, 2019|Comments Off

Design and Construction of Pedestal Retrofitting for Furnaces No. 1 to 4

Design and Construction of Pedestal Retrofitting for Furnaces No. 1 to 4

Reinforcement of hot-rolling furnace pedestals at Mobarakeh Steel Company, the largest steel production company in Iran

PROJECT NAME

EMPLOYER

LOCATION

SERVICES

Challenges

Solutions

Results