Experimental and numerical study of basalt fiber reinforced polymer strip strengthened autoclaved aerated concrete masonry walls under vented gas explosions

2017 ◽  
Vol 152 ◽  
pp. 901-919 ◽  
Author(s):  
Zhan Li ◽  
Li Chen ◽  
Qin Fang ◽  
Wensu Chen ◽  
Hong Hao ◽  
...  
Keyword(s):  
Numerical Study ◽  
Basalt Fiber ◽  
Fiber Reinforced Polymer ◽  
Masonry Walls ◽  
Fiber Reinforced ◽  
Autoclaved Aerated Concrete ◽  
Reinforced Polymer ◽  
Concrete Masonry ◽  
Gas Explosions ◽  
Aerated Concrete

Strengthening of RC-Brick Masonry Walls with Opening Using Basalt Fiber Reinforced Polymer

2014 ◽  
Vol 1021 ◽  
pp. 63-67 ◽  
Author(s):  
Zhen Lei ◽  
Jun Tong Qu ◽  
Yong Wang
Keyword(s):  
Basalt Fiber ◽  
Brick Masonry ◽  
Fiber Reinforced Polymer ◽  
Masonry Walls ◽  
Masonry Structures ◽  
Fiber Reinforced ◽  
Promising Alternative ◽  
Reinforced Polymer ◽  
Strengthening Technique ◽  
Basalt Fiber Reinforced Polymer

FRP strengthening technique provides a promising alternative for masonry structures. This paper presents research results of quasi-static tests investigating the in-plane mechanical behavior of RC-brick masonry walls with opening strengthened with basalt fiber reinforced polymer (BFRP). Two half scale RC-brick walls were constructed, one without any strengthening scheme served as the reference specimen, another one was directly strengthened with BFRP in mixed strengthening configuration. All specimens were tested under low frequency cyclic loading. BFRP can effectively improve the lateral strength of the wall by a factor of 0.16, and the improvement in the lateral deformation capacity was much significant. The seismic performance of the composite wall strengthened with BFRP can exceed the unreinforced reference, which verifies the effectiveness of BFRP strengthening technique to strengthening RC-brick composite masonry structures in seismically endangered regions.

Study of autoclaved aerated concrete masonry walls under vented gas explosions

2017 ◽  
Vol 141 ◽  
pp. 444-460 ◽  
Author(s):  
Zhan Li ◽  
Li Chen ◽  
Qin Fang ◽  
Hong Hao ◽  
Yadong Zhang ◽  
...  
Keyword(s):  
Masonry Walls ◽  
Autoclaved Aerated Concrete ◽  
Concrete Masonry ◽  
Gas Explosions ◽  
Aerated Concrete ◽  
Concrete Masonry Walls

scholarly journals Compressive Strength of Modified FRP Hybrid Bars

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1898
Author(s):  
Marek Urbański
Keyword(s):  
Compressive Strength ◽  
Modulus Of Elasticity ◽  
Basalt Fiber ◽  
Test Method ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Free Length ◽  
Compression Properties ◽  
Reinforced Polymer ◽  
Frp Bars

A new type of HFRP hybrid bars (hybrid fiber reinforced polymer) was introduced to increase the rigidity of FRP reinforcement, which was a basic drawback of the FRP bars used so far. Compared to the BFRP (basalt fiber reinforced polymer) bars, modification has been introduced in HFRP bars consisting of swapping basalt fibers with carbon fibers. One of the most important mechanical properties of FRP bars is compressive strength, which determines the scope of reinforcement in compressed reinforced concrete elements (e.g., column). The compression properties of FRP bars are currently ignored in the standards (ACI, CSA). The article presents compression properties for HFRP bars based on the developed compression test method. Thirty HFRP bars were tested for comparison with previously tested BFRP bars. All bars had a nominal diameter of 8 mm and their nonanchored (free) length varied from 50 to 220 mm. Test results showed that the ultimate compressive strength of nonbuckled HFRP bars as a result of axial compression is about 46% of the ultimate strength. In addition, the modulus of elasticity under compression does not change significantly compared to the modulus of elasticity under tension. A linear correlation of buckling load strength was proposed depending on the free length of HFRP bars.

Compressive Behavior of Circular Concrete Columns Confined by Basalt Fiber Reinforced Polymer (BFRP)

2018 ◽  
Vol 765 ◽  
pp. 355-360 ◽  
Author(s):  
Sakol Suon ◽  
Shahzad Saleem ◽  
Amorn Pimanmas
Keyword(s):  
Basalt Fiber ◽  
Concrete Columns ◽  
Primary Objective ◽  
Fiber Reinforced Polymer ◽  
Small Scale ◽  
Fiber Reinforced ◽  
Compressive Behavior ◽  
Reinforced Polymer ◽  
Ductile Behavior ◽  
Basalt Fiber Reinforced Polymer

This paper presents an experimental study on the compressive behavior of circular concrete columns confined by a new class of composite materials originated from basalt rock, Basalt Fiber Reinforced Polymer (BFRP). The primary objective of this study is to observe the compressive behavior of BFRP-confined cylindrical concrete column specimens under the effect of different number of layers of basalt fiber as a study parameter (3, 6, and 9 layers). For this purpose, 8 small scale circular concrete specimens with no internal steel reinforcement were tested under monotonic axial compression to failure. The results of BFRP-confined concrete specimens of this study showed a bilinear stress-strain response with two ascending branches. Consequently, the performance of confined columns was improved as the number of BFRP layer was increased, in which all the specimens exhibited ductile behavior before failure with significant strength enhancement. The experimental results indicate the well-performing of basalt fiber in improving the concrete compression behavior with an increase in number of FRP layers.

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