RISK MANAGEMENT IN STRENGTHENING THE REINFORCED CONCRETE BEAMS THROUGH EBR AND NSM METHODS

حبیب الله پورنمازیان نجف آباد¹ محسن ایزدی نیا²

1) HABIB ALLAH POORNAMAZIAN
2) MOHSEN IZADINIA

Publication : The National Conference on Research and Development in Management and Economics resistance(ieconf.com)
Abstract :
Adopting risk management is a must, inevitable in all construction projects. Strengthening the reinforced concrete beams with respect to their type and how they are made is assessed in this study. The near surface mounted (NSM) method outperforms the externally bounded reinforcing (EBR) while somehow (EBR) is adopted more. A researcher designed questionnaire consists of 10 restrictive factors regarding NSM implementation. The responding persons consist of skilled experts with at least 5 year experience in this field. The execution of risk management in NSM, the restrictions thereof and the effect of risk management on the functionality of these factors are of concern here. The obtained data is assessed through statistical tests. The factors of more execution time, not enough experts, high volume, low knowledge on the client, consultant and contractor part regarding existence of this method, complexities in calculation, big calculating mass, concrete cover 5-7 cm, FRP rebar needed in NSM, high implementation cost and high FRP implementation cost are considered as the restrictive factors effecting NSM implementation. The initial assumption that the 10 factors were restrictive as to NSM implementation led to proving that the factor of lack of information about this method within client, contractor and consultant was the most effective as a restriction. This proof was obtained through the statistical tests conducted on the assumptions.
Keywords : risk management EBR NSM strengthening through FRP