Effect of surface condition on the bond of Basalt Fiber-Reinforced Polymer bars in concrete

Henin, Eliya; Tawadrous, Raed; Morcous, George

doi:10.1016/j.conbuildmat.2019.07.160

Cited by 20 publications

(14 citation statements)

References 11 publications

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“…It is established that in the temperature range of the basaltic melt 960...1180 ºС and viscosity 3.19...4.08 Pa/s, an adjustable speed of drawing the primary fiber through the spinneret plate is ensured, it provides the calculated strength of the primary basalt fiber with a certain structural characteristic of its surface . In the case of using the corrected composition of the basaltic melt with the optimal value of the working viscosity and temperature, it is reached after 10-15 minutes and remains stable [13,14]. This ensures stabilization of the process of obtaining basalt fiber, which is more effective than basalt melts of another warehouse, in which the zone of optimal values is within 25-40 minutes.…”

Section: Resultsmentioning

confidence: 98%

The Influence of Technological Factors on the Properties of Basalt Fiber When Used in the Manufacture of Flexible Heat and Sound Insulating Products

Berdnyk

2019

Technology transfer: fundamental principles and innovative tech

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Analysis of energy efficiency and operational safety of technological equipment of industrial enterprises, engineering networks, buildings and structures, building structures in many sectors of the economy, including the housing and industrial sectors, causes interest in the use of high-tech, environmentally friendly heat and sound insulation materials with enhanced performance properties. One of the relevant representatives of these materials is basalt fibers and their use as raw materials in the production of flexible heat and sound insulating products. It is known that the chemical composition of the initial melt equally affects the physicochemical and mechanical properties of basalt fibers. The main influence factors, including the chemical composition, are the thermal past of the melt, the method for producing basalt fiber and the conditions for the formation of its structure. These factors determine the structural characteristics of the fiber and, as a consequence, its physicochemical characteristics. The degree of fiber strength is directly determined by its chemical composition and production method. The greatest strength of the fiber is obtained by ensuring the perfect fiber structure in the absence of ruptures of siliceous chains.

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Section: Resultsmentioning

confidence: 98%

The Influence of Technological Factors on the Properties of Basalt Fiber When Used in the Manufacture of Flexible Heat and Sound Insulating Products

Berdnyk

2019

Technology transfer: fundamental principles and innovative tech

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“…As indicated earlier, the effectiveness of the bond strength depends on several factors, including, but not limited to, surface configuration/preparation of the BFRP bars. Several studies have shown that ribbed/indented, helically wrapped, and sand-coated BFRP provides the highest bond strength compared to BFRP without wrapping or without sand coating [ 27 ]. One study, however, reported better bond strength for sand-coated ribbed FRP bars without helical wrapping compared to sand-coated bars with helical wrapping [ 22 ].…”

Section: Bond Of Bfrp Bars To Concretementioning

confidence: 99%

“…The peak strength is followed by a significant drop in bond strength due to partial failure of the secondary sand coating layer. The primary sand coating layer causes an increase in bond strength again (third phase), as shown in Figure 5 b, up to a peak bond strength which then remains essentially constant until complete bond failure occurs [ 27 ].…”

Section: Bond Of Bfrp Bars To Concretementioning

confidence: 99%

“…Experimental studies by [ 27 ] deduced a bond coefficient k b = 0.77 for double sand coating of wrapped BFRP bars and k b = 0.92 for single sand coating. Clearly the bond coefficient of double sand coating is close to the recommended CSA [ 23 ] value but far less than 1.4 recommended by [ 2 ].…”

Section: Bond Of Bfrp Bars To Concretementioning

confidence: 99%

“…This is consistent with the requirement for longer development length when traditional carbon reinforcing steel is bundled. k b = 1.25 was recommended for wrapped BFRP bars that are sand coated [ 27 ].…”

Section: Bond Of Bfrp Bars To Concretementioning

confidence: 99%

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Durability and Mechanical Properties of Concrete Reinforced with Basalt Fiber-Reinforced Polymer (BFRP) Bars: Towards Sustainable Infrastructure

2021

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Reducing the fingerprint of infrastructure has become and is likely to continue to be at the forefront of stakeholders’ interests, including engineers and researchers. It necessary that future buildings produce minimal environmental impact during construction and remain durable for as long as practicably possible. The use of basalt fiber-reinforced polymer (BFRP) bars as a replacement for carbon steel is reviewed in this article by examining the literature from the past two decades with an emphasis on flexural strength, serviceability, and durability. The provisions of selected design and construction guides for flexural members are presented, compared, and discussed. The bond of BFRP bars to the surrounding concrete was reportedly superior to carbon steel when BFRP was helically wrapped and sand coated. Experimental studies confirmed that a bond coefficient kb = 0.8, which is superior to carbon steel, may be assumed for sand-coated BFRP ribbed bars that are helically wrapped, as opposed to the conservative value of 1.4 suggested by ACI440.1R-15. Code-based models overestimate the cracking load for BFRP-reinforced beams, but they underestimate the ultimate load. Exposure to an alkaline environment at temperatures as high as 60 °C caused a limited reduction in bond strength of BFRP. The durability of BFRP bars is influenced by the type of resin and sizing used to produce the bars.

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Strength and ductility of reinforced concrete using basalt fibre-reinforced polymers

Sivasankar,

Dhal,

Gopalakrishnan

et al. 2023

Polym. Bull.

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Effect of surface condition on the bond of Basalt Fiber-Reinforced Polymer bars in concrete

Cited by 20 publications

References 11 publications

The Influence of Technological Factors on the Properties of Basalt Fiber When Used in the Manufacture of Flexible Heat and Sound Insulating Products

The Influence of Technological Factors on the Properties of Basalt Fiber When Used in the Manufacture of Flexible Heat and Sound Insulating Products

Durability and Mechanical Properties of Concrete Reinforced with Basalt Fiber-Reinforced Polymer (BFRP) Bars: Towards Sustainable Infrastructure

Strength and ductility of reinforced concrete using basalt fibre-reinforced polymers

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