Structural behaviour of cracked Pre-Tensioned (PRT) concrete beam under vertical static load / Nurul Huda Suliman

Suliman, Nurul Huda (2019) Structural behaviour of cracked Pre-Tensioned (PRT) concrete beam under vertical static load / Nurul Huda Suliman. PhD thesis, Universiti Teknologi MARA.

Abstract

Retrofitting of concrete elements is one of the methods among numerous other methods in extending the lifespan of the structural members without undergoing the process of redesigning and reconstructing. At a certain occasion, concrete structural members are exposed to harm without a proper maintenance which could eventually lead to structural failures. Hence to avoid, there are various types of repairing tools, materials and techniques have been developed over time depending on type of damages and how severe the damages are. In this study however, was specifically chosen a retrofitting approach by installing Carbon Fiber Reinforced Polymer (CFRP) sheets and plates on the surface of a cracked structural member of beam with the help of epoxy to adhere them and producing new composites. The CFRP is commonly known as lightweight material that produces higher tensile strength compared to mild steel. In ensuring that, this study has been decided to research on how effective does the CFRP is in the form of sheets and plates towards a cracked beam. In addition to that, as common practices in Malaysia is lack on early diagnose towards repair works, this study has purposely runs on a delayed timeframe with taking measure of the pre-crack size which considering on first visible crack and direct apply the CFRP retrofit. The effectiveness of this method were measured through Load-Displacement Relationship between controlled specimen and the retrofitted specimen with addition on Energy Loss analysis of before and after retrofitting work. Furthermore, a crack grading system developed by the Public Work Department (PWD) also had been improved. This grading system will provide ideas and information on how to carry out retrofitting works by using the appropriate repair techniques and at the right time.

Metadata

Item Type: Thesis (PhD)
Creators:
Creators
Email / ID Num.
Suliman, Nurul Huda
2011878822
Contributors:
Contribution
Name
Email / ID Num.
Thesis advisor
Abu Bakar, Afidah (Associate Professor Dr.)
UNSPECIFIED
Subjects: T Technology > TA Engineering. Civil engineering > Mechanics of engineering. Applied mechanics
T Technology > TA Engineering. Civil engineering > Materials of engineering and construction
T Technology > TA Engineering. Civil engineering > Reinforced concrete
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Civil Engineering
Programme: Doctor of Philosophy (Structural Quantitative Engineering)
Keywords: Pre-Tensioned (PRT), Concrete, Beam
Date: 2019
URI: https://ir.uitm.edu.my/id/eprint/41510
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