Effects of fire on the bending strength of high-strength reinforced concrete beams
Date of Publication
2010
Document Type
Bachelor's Thesis
Degree Name
Bachelor of Science in Civil Engineering with Specialization in Structural Engineering
Subject Categories
Engineering
College
Gokongwei College of Engineering
Department/Unit
Civil Engineering
Thesis Adviser
Bernardo A. Lejano
Defense Panel Member
Jonathan R. Dungca
Irene Olivia M. Ubay
Abstract/Summary
High Strength Concrete (HSC) is now used in the constructions of high rise buildings, offshore constructions, bridges, and the like. What sets it apart from Norman Strength Concrete (NSC) is that it can sustain much greater forces therefore it can be made slimmer making it more workable and space efficient. However, it was discussed in other studies that HSC performs inferior to NSC when exposed to high temperature. The National Structural Code of the Philippines, NSCP, has limited provisions and guidelines for HSC when subjected to fire.
This study investigated the effects of fire on the bending strength of high strength reinforced concreter beams. In this research, three grades of concrete compressive strengths were used 49 MPa and 63 MPa for high strength, and a normal strength of 35 MPa for comparison purposes. Twenty-four (24) concrete beams, with dimensions of 150 mm x 250 mm x 1050 mm, and thirty-six (36) concrete cylinders were produced and then subjected to fire in four different times of exposures 0 hours, 1 hours, 2 hours, and 3 hours. The beams and cylinders underwent testing and the data were analyzed. The experimental and theoretical moments for each specimen at the elastic and ultimate stages were obtained and evaluated. It was found that HSC has a much higher rate of deterioration as compared to NSC after being exposed to fire.
Abstract Format
html
Language
English
Format
Accession Number
TU15922
Shelf Location
Archives, The Learning Commons, 12F, Henry Sy Sr. Hall
Physical Description
129 leaves ; 30cm.
Keywords
High strength concrete
Recommended Citation
De las Llagas, J., Martinez, M. G., & Viernes, A. P. (2010). Effects of fire on the bending strength of high-strength reinforced concrete beams. Retrieved from https://animorepository.dlsu.edu.ph/etd_bachelors/7936
