عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
NATIONAL BIBLIOGRAPHY NUMBER
Number
TL58217
LANGUAGE OF THE ITEM
.Language of Text, Soundtrack etc
انگلیسی
TITLE AND STATEMENT OF RESPONSIBILITY
Title Proper
Fire Performance of FRP: Bond of GFRP Bars to Concrete and FRP Strengthened Columns
General Material Designation
[Thesis]
First Statement of Responsibility
Mousavi, Seyed Mohammad Sadegh Arshia
Subsequent Statement of Responsibility
Green, Mark F.
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
Queen's University (Canada)
Date of Publication, Distribution, etc.
2020
GENERAL NOTES
Text of Note
109 p.
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
M.A.Sc.
Body granting the degree
Queen's University (Canada)
Text preceding or following the note
2020
SUMMARY OR ABSTRACT
Text of Note
Standard pullout tests (e.g. 200 mm cubes) with a short embedment length have shown a significant reduction (80% loss at 200 °C) in the bond strength of GFRP bars at high temperatures. More detailed bond behaviour of glass fibre reinforced polymer (GFRP) reinforcing bars has been examined in this study. This study adopted a modified pullout test method in which pullout specimens consisting of GFRP bars embedded in 350 mm (22db) long concrete cylinders are tested at high temperatures. The tests examined the bond degradation under different temperature distributions (i.e. uniform and gradient). The results were compared with the previous pullout tests with 68 mm (4db) embedment length and showed that the pullout capacity of GFRP bars in this test were 3.3, 4, and 2 times higher at 115, 135 and 300 °C, respectively. The results proved the effectiveness of longer embedment length particularly at temperatures below 200 °C. Pullout tests with temperature gradients simulated the bond behaviour of GFRP bars at the unexposed end zones of GFRP reinforced concrete beams or slabs. The results showed that the tensile force in GFRP bars gradually transferred to the lower temperature zones as the heated parts of the bar lost bond with concrete. The results showed that the concentrated forces over a short length of GFRP can trigger concrete splitting and loss of bond even if the GFRP bars still maintain bond with concrete. Providing thicker concrete cover at the end zones of GFRP reinforced members is recommended to enhance fire resistance. Also, a series of approximate and simple numerical models including heat and structural analysis were developed to study the effects of high temperatures on two FRP-wrapped and insulated reinforced concrete columns tested by the National Research Council (NRC) of Canada. The results of finite element models showed less than 5% difference with the experimental results.
UNCONTROLLED SUBJECT TERMS
Subject Term
Bond strength
Subject Term
Carbon
Subject Term
Cold
Subject Term
Composite materials
Subject Term
Concrete
Subject Term
Concrete slabs
Subject Term
Corrosion resistance
Subject Term
Failure
Subject Term
Finite element analysis
Subject Term
Heat conductivity
Subject Term
High temperature
Subject Term
Load
Subject Term
Mechanical properties
Subject Term
Parking facilities
Subject Term
Polymers
Subject Term
Prestressed concrete
Subject Term
Reinforced concrete
Subject Term
Software
Subject Term
Tensile strength
PERSONAL NAME - PRIMARY RESPONSIBILITY
Mousavi, Seyed Mohammad Sadegh Arshia
PERSONAL NAME - SECONDARY RESPONSIBILITY
Green, Mark F.
CORPORATE BODY NAME - SECONDARY RESPONSIBILITY
Queen's University (Canada)
ELECTRONIC LOCATION AND ACCESS
Electronic name
مطالعه متن کتاب p
[Thesis]
276903
a
Y
