Bond Durability of Basalt Fiber-Reinforced Polymer Bars Embedded in Concrete under Direct Pullout Conditions

被引:76
作者
El Refai, Ahmed [1 ]
Abed, Farid [2 ]
Altalmas, Ahmad [2 ]
机构
[1] Univ Laval, Dept Civil & Water Engn, Quebec City, PQ G1V 0A6, Canada
[2] Amer Univ Sharjah, Dept Civil Engn, Sharjah, U Arab Emirates
关键词
Aging; Basalt; Bonding; Concrete; Durability; Fiber-reinforced polymer; Glass fiber; Pullout; Slip; Tensile loads; FRP REBARS; GFRP BARS; PERFORMANCE; DEGRADATION; BEHAVIOR; TEMPERATURE; STRENGTH;
D O I
10.1061/(ASCE)CC.1943-5614.0000544
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The use of basalt fiber-reinforced polymer (BFRP) bars as a reinforcing material has gained increasing interest worldwide. However, few studies have reported on these bars' performance in concrete when exposed to harsh environments. This paper investigates the effect of five different accelerated environments, namely (1)tap water, (2)seawater, (3)elevated temperature, (4)elevated temperature followed by tap water, and (5)elevated temperature followed by seawater, on the bond stress-slip response, adhesion to concrete, and bond strength [of two types of BFRP bars and one type of glass fiber-reinforced polymer (GFRP) bar]. The bond-slip responses of all specimens were governed by the surface treatment of each bar and its manufacturing quality, regardless of the fiber type. Sand-coated BFRP bars showed higher bond characteristics than helically grooved bars after conditioning. Moister environments caused enhanced adhesion at the early loading stages for all specimens. Nevertheless, such environments had a detrimental effect on the bond strength at later stages depending on the bar material's moisture absorption. Finally, exposure to elevated temperatures caused insignificant variation in the bond strength of all tested specimens.
引用
收藏
页数:11
相关论文
共 29 条
[1]   Temperature and environmental effects on glass fibre rebar: modulus, strength and interfacial bond strength with concrete [J].
Abbasi, A ;
Hogg, PJ .
COMPOSITES PART B-ENGINEERING, 2005, 36 (05) :394-404
[2]   Bond behavior of fiber reinforced polymer bars under direct pullout conditions [J].
Achillides, Z ;
Pilakoutas, K .
JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2004, 8 (02) :173-181
[3]   Bond performances of FRP rebars-reinforced concrete [J].
Aiello, Maria Antonietta ;
Leone, Marianovella ;
Pecce, Marisa .
JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2007, 19 (03) :205-213
[4]   Durability of GFRP Bars' Bond to Concrete under Different Loading and Environmental Conditions [J].
Alves, Juliana ;
El-Ragaby, Amr ;
El-Salakawy, Ehab .
JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2011, 15 (03) :249-262
[5]  
American Concrete Institute (ACI), 2006, ACI 440.1R-06)
[6]  
[Anonymous], 2004, ACI 440.3R-04
[7]  
[Anonymous], 2002, S80602 CAN CSA
[8]   Experimental study of bond behaviour between concrete and FRP bars using a pull-out test [J].
Baena, Marta ;
Torres, Lluis ;
Turon, Albert ;
Barris, Cristina .
COMPOSITES PART B-ENGINEERING, 2009, 40 (08) :784-797
[9]   Bond durability of glass fiber-reinforcod polymer bars embedded in concrete beams [J].
Bakis, Charles E. ;
Boothby, Thomas E. ;
Jia, Junhui .
JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2007, 11 (03) :269-278
[10]   ACCELERATED TEST METHODS TO DETERMINE THE LONG-TERM BEHAVIOR OF FRP COMPOSITE STRUCTURES - ENVIRONMENTAL-EFFECTS [J].
BANK, LC ;
GENTRY, TR ;
BARKATT, A .
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, 1995, 14 (06) :559-587