dc.contributor.advisor |
Gamage JCPH |
|
dc.contributor.author |
Rathnasiri WKK |
|
dc.date.accessioned |
2021 |
|
dc.date.available |
2021 |
|
dc.date.issued |
2021 |
|
dc.identifier.citation |
Rathnasiri, W.K.K. (2021). Effects of elevated temperature curing on glass transition temperature of CFRP/ concrete bond [Master's theses, University of Moratuwa]. Institutional Repository University of Moratuwa. hhttp://dl.lib.uom.lk/handle/123/20714 |
|
dc.identifier.uri |
http://dl.lib.uom.lk/handle/123/20714 |
|
dc.description.abstract |
Strengthening of existing structures made out of concrete, all around the world is an
increasing requirement due to many reasons like aging, insufficient maintenance, and the
degradation due to environmental impact, as well as due to increases of the applied loads
and due to requirement of complying with the modern standards. Carbon Fiber
Reinforcement Polymer, CFRP, one of the budding and potential technologies in the
structural strengthening process. As such lots of researchers who wish to continue their
higher studies and knowledge gaining in structural engineering have involved researchers
in structural strengthening using CFRP.
Laying CFRP fabrics and composites using epoxy adhesives, along the external surfaces
of structural elements are the popular method for a strengthening of structural capacities.
These externally laid CFRP fabrics are subjected to elevated temperatures due to
environmental conditions. The exposure to such elevated temperature affects the strength
of the CFRP/Concrete bonds, because of the low glass transition temperature (Tg) of these
epoxy adhesives that have been used to create the bond between CFRP and concrete
substrate.
A slight increment of Tg is also contributed to enhancing environmental resistance of
strengthened outdoor members which directly expose to the environmental fluctuations. Curing
of the CFRP/epoxy/concrete bond in an elevated temperature environment may enhance the
bond performance while improving its Tg. However, it is important to ensure a safe temperature
range in curing without affecting the performance of the concrete part of the system. This study
focuses on determining the safe temperature range, which may be used as raised
temperature curing of the CFRP/Concrete composites and determination of bond
characteristics for the corresponding temperature applied for curing.
A total of twenty-five single strap joints were prepared under two different curing conditions.
The impact of curing at moderately elevated temperature (75°C) on CFRP/Concrete bond
strength was examined for both ambient and elevated temperature conditions. |
en_US |
dc.language.iso |
en |
en_US |
dc.subject |
CONCRETE BOND |
en_US |
dc.subject |
GLASS TRANSITION TEMPERATURE |
en_US |
dc.subject |
CONCRETE STRENGTHENING |
en_US |
dc.subject |
CARBON FIBER REINFORCEMENT POLYMER, CFRP |
en_US |
dc.subject |
STRUCTURAL ENGINEERING -Dissertation |
en_US |
dc.subject |
CIVIL ENGINEERING-Dissertation |
en_US |
dc.title |
Effects of elevated temperature curing on glass transition temperature of CFRP/ concrete bond |
en_US |
dc.type |
Thesis-Abstract |
en_US |
dc.identifier.faculty |
Engineering |
en_US |
dc.identifier.degree |
MSc in Structural Engineering |
en_US |
dc.identifier.department |
Department of Civil Engineering |
en_US |
dc.date.accept |
2021 |
|
dc.identifier.accno |
TH4566 |
en_US |