Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531354 |
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Title: | Behaviour of RC beams strengthened with CFRP laminates at elevated temperatures | ||||||
Author: | Petkova, Diana |
ISNI:
0000 0004 2703 2782
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Awarding Body: | Kingston University | ||||||
Current Institution: | Kingston University | ||||||
Date of Award: | 2010 | ||||||
Availability of Full Text: |
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Abstract: | |||||||
Strengthening of existing structures has become an important aspect of civil engineering.
Various methods exist and have been developed in the last few decades one of which has
become increasingly popular- strengthening using fibre reinforced polymers. Their excellent
mechanical properties and resistance to different environmental conditions make them a viable
alternative to the traditional materials like concrete and steel. In this study the effect of
elevated temperatures on the behaviour of FRP strengthened reinforced concrete beams is
investigated.
The behaviour of reinforced concrete beams strengthened with FRF laminates has been
investigated by different researchers in the last two decades. Ultimate load, failure modes and
improved techniques for strengthening have been the main areas of interest. As a result of the
extensive research several classifications and design guidelines have been proposed to ensure
better performance and prevent premature failures of the systems. One important aspect of the
strengthening is the susceptibility of polymers to significant and rapid reduction of their
strength when exposed to elevated temperatures and fire. Little research has been done up-todate
on the residual properties of FRP strengthened systems after heating and cooling.
Three experiments have been conducted for the purpose of this study. The bond strength of
CFRP strengthened systems is first investigated for temperature range of 20°C to 300°C. The
behaviour of small-scale strengthened beams during the heating process is presented next. The
third experiment is then designed to determine the residual flexural capacity of the heated and
cooled minibeams. The results are presented and compared indicating residual strength of the
systems to 30% compared to their performance at room temperature
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Supervisor: | Not available | Sponsor: | Not available | ||||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||||
EThOS ID: | uk.bl.ethos.531354 | DOI: | Not available | ||||
Keywords: | Mechanical, aeronautical and manufacturing engineering | ||||||
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