Flexural strengthening of reinforced concrete beams with fabric reinforced cementitious mortar : effect of reinforcement ratios
department or school: Applied Science, Faculty of
department or school: Engineering, School of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Billows, Trevor Norman Stanley
issued: 2017-01-21T03:59:40
issued: 2016
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: The current state of North America’s infrastructure system is in dire straits. The cost of repair is estimated at over $3.6 trillion in the United States alone. An innovative and cost-effective method of repair and retrofitting is vital to close what has been referred to as the infrastructure gap. As an alternative to the current methods, fabric reinforced cementitious mortar (FRCM) is proposed to aid the civil engineering industry in removing this gap. Applied to structural members externally, FRCM is characterized by its ability to strengthen and rehabilitate these structures. This study set out to determine the flexural strength improvement of reinforced concrete (RC) beams with different reinforcement ratios, textile layers, fabric materials and anchorage methods. Ten full-scale (200 x 300 x 4000mm) RC beams (2 controls, 8 strengthened) were cast and tested under monotonic four-point bending conditions. Ultimate flexural capacity, pseudo-ductility, energy absorption, stiffness, and failure mode were taken as performance indicators. Results showed all FRCM strengthened beams failed in a similar way to their control counterparts and FRCM did not affect the pre-yielding stiffness or ductility of the strengthened beams. However, FRCM significantly improved the beams’ yield load and flexural capacity over the control. Flexural strength improved by up to 81% over the control. Strength improved with an increase in textile layers, and U-shaped strengthened specimens outperformed their soffit-strengthened equivalents.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/60139
note: FLEXURAL STRENGTHENING OF REINFORCED CONCRETE BEAMS WITH FABRIC REINFORCED CEMENTITIOUS MORTAR: EFFECT OF REINFORCEMENT RATIOS by Trevor Norman Stanley Billows B.A.Sc., University of British Columbia, Kelowna, 2014 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE COLLEGE OF GRADUATE STUDIES (Civil Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) December 2016 © Trevor Norman Stanley Billows, 2016 ii The undersigned certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis entitled: FLEXURAL STRENGTHENING OF REINFORCED CONCRETE BEAMS WITH FABRIC REINFORCED CEMENTITIOUS MORTAR: EFFECT OF REINFORCEMENT RATIOS Submitted by: Trevor Billows in partial fulfillment of the requirements of the degree of Master of Applied Science Dr. Ahmad Rteil, School of Engineering Supervisor, Professor (please print name and faculty/school above the line) Dr. Shahria Alam, School of Engineering Supervisory Committee Member, Professor (please print name and faculty/school in the line above) Dr. Kasun Hewage, School of Engineering Supervisory Committee Member, Professor (please print name and faculty/school in the line above) Dr. Rudolf Seethaler, School of Engineering University Examiner, Professor (please print name and faculty/school in the line above) External Examiner, Professor (please print name and university in the line above) December 16, 2016 (Date Submitted to Grad Studies) iii ABSTRACT The current state of North America’s infrastructure system is in dire straits. The cost of repair is estimated at over $3.6 trillion in the United States alone. An innovative and cost-effective method of repair and retrofitting is vital to close what has been referred to as the infrastructure gap. As an alternative to the current methods, fabric reinforced cementitious mortar (FRCM) is proposed to aid the civil engineering industry in removing this gap. Applied to structural membe…
has type: Thesis/Dissertation
date issued: 2017-02
is shown at: 10.14288/1.0340492
language: eng
degree discipline: Civil Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/60139