Effect of temperature on strength and stiffness properties of near-surface mounted FRP reinforcement

被引：121

作者：

Yu, Baolin ^{[1
]}

Kodur, Venkatesh ^{[1
]}

机构：

[1] Michigan State Univ, Dept Civil & Environm Engn, E Lansing, MI 48824 USA

来源：

COMPOSITES PART B-ENGINEERING | 2014年 / 58卷

基金：

美国国家科学基金会;

关键词：

Carbon-carbon composites (CCCS); High-temperature properties; Mechanical properties; Mechanical testing; Near-surface mounted (NSM); reinforcement; BARS; FIRE;

D O I：

10.1016/j.compositesb.2013.10.055

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents results from an experimental study on the effect of temperature on tensile strength and elastic modulus of two types of near-surface mounted (NSM) reinforcement, CFRP strip and CFRP rod, in 20-600 degrees C temperature range. Results from these tests indicate that both CFRP strip and rod retain most of their initial tensile strength and elastic modulus properties up to 200 degrees C. However, these properties degrade significantly beyond 300 degrees C due to decomposition of FRP resin. Further study shows NSM strip and rod possess relatively higher strength than those used for internal reinforcement and external laminates. Data from tests is utilized to propose empirical relations for variation of strength and modulus of NSM CFRP reinforcement with temperature. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：510 / 517

页数：8

共 13 条

[1]

American Concrete Institute Technical Committee 440, 2006, GUID TEST METH FIB R

[2]

[Anonymous], ACI SP

[3]

[Anonymous], THERMOMECHANICS COMP

[4] Evaluating the fire endurance of concrete slabs reinforced with FRP bars: Considerations for a holistic approach [J].

Bisby, L. A. ;

Kodur, V. K. R. .

COMPOSITES PART B-ENGINEERING, 2007, 38 (5-6) :547-558

[5] Response to fire of concrete structures that incorporate FRP [J].

Bisby, LA ;

Green, MF ;

Kodur, VKR .

PROGRESS IN STRUCTURAL ENGINEERING AND MATERIALS, 2005, 7 (03) :136-149

[6] Near-surface mounted FRP reinforcement: An emerging technique for strengthening structures [J].

De Lorenzis, L. ;

Teng, J. G. .

COMPOSITES PART B-ENGINEERING, 2007, 38 (02) :119-143

[7]

Excel, 2007, OFF 2007 HELP DOC

[8]

KUMAHARA S, 1993, ACI SP, V183, P731

[9]

Mouritz AP, 2006, FIRE PROPERTIES POLY, P179

[10] Effect of fire on FRP reinforced concrete members [J].

Saafi, M .

COMPOSITE STRUCTURES, 2002, 58 (01) :11-20

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