Synergistic effects of steel fibres and expansive agent on steel bar-concrete bond

Li, L.G.; Chen, Zhanli; Ouyang, Yi; Zhu, Jiang; Chu, Sharon Lynn; Kwan, A.K.H.

doi:10.1016/j.cemconcomp.2019.103380

Cited by 47 publications

(12 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another study findings supported the approach of increasing flexural strength by raising PP fibre content, as this showed flexural performance improvement in both equivalent flexural strength and toughness with an increase in the proportion of SF used [194,195]. Moreover, there was a significant positive correlation between the type of FRP added to concrete.…”

Section: Figure-20mentioning

confidence: 58%

Performance of engineered fibre reinforced concrete (EFRC) under different load regimes: A review

Khalel

Khan

Starr

et al. 2021

Construction and Building Materials

View full text Add to dashboard Cite

Section: Figure-20mentioning

confidence: 58%

Performance of engineered fibre reinforced concrete (EFRC) under different load regimes: A review

Khalel

Khan

Starr

et al. 2021

Construction and Building Materials

View full text Add to dashboard Cite

“…The bond stiffness ( k ) of the FRP bar–concrete composite is defined as (Li et al, 2019):where σ is the half of the bond strength. The maximum bond stress is defined as bond strength (bold-italicτbold-italicmax), which is determined by equation (1).…”

Section: Resultsmentioning

confidence: 99%

Durability of bond between carbon/glass hybrid fiber-reinforced polymer (HFRP) bar and concrete in water

Pan

et al. 2023

Advances in Structural Engineering

View full text Add to dashboard Cite

Glass-fiber-reinforced polymer (GFRP) bars have been widely used as a reinforcement in concrete, and glass fibers are susceptible to reacting with alkali ions in concrete pores. Thus, carbon fibers are wrapped around GFRP bars to produce carbon/glass hybrid fiber-reinforced polymer (HFRP) bars so as to promote the durability of the internal GFRP bars in concrete. This work studies the durability of the interfacial bond between GFRP bars/HFRP bars and concrete using pullout tests. The specimens are tested after immersion in distilled water for 0, 150, 255, and 544 days. The failure of the GFRP bar–concrete composite is due to damage to the GFRP bar, while the HFRP bar–concrete composite fails because of a combination of the scratching of the HFRP bar and the failure of the concrete. Both HFRP and GFRP bars are scratched as the immersion period extends. Further, the strength of the bond between the HFRP bar and concrete is lower than that of the bond between the GFRP bar and concrete, while the bond stiffness of the HFRP bar–concrete composite is higher than that of the GFRP bar–concrete composite. The bond strength of the HFRP bar–concrete and GFRP bar–concrete composites increases in the early immersion periods but decreases after 544 days of immersion in water. The retention of the bond strength of the HFRP bar–concrete composite is superior to that of the GFRP bar–concrete composite. The carbon fiber coat is proven to improve the durability of the bond between HFRP bars and concrete in water. A formula for predicting the bond strength of HFRP bar–concrete and GFRP bar–concrete composites in water is also developed. Finally, the modeling results demonstrate that the bond strength retention of the HFRP bar–concrete and GFRP bar–concrete composite is 76% and 46% after 50 years of service time, respectively.

show abstract

“…For instance, Bizzozero et al [32] found a critical amount of gypsum (~45 mol% for calcium aluminate cement and ~55 mol% for sulfoaluminate cement systems) that led to unstable expansion. Herein, the amount of EA was determined based on previous studies [6], which was demonstrated to be effective. Nevertheless, the controlling mechanism for achieving tailorable expansion and the relationship between porosity and expansion are worthy of further systematic exploration [60].…”

Section: Mechanisms Behind the Synergistic Effect Of Bf And Eamentioning

confidence: 99%

“…without the use of fibers) could dilate and crack, thus accelerating its rapid deterioration and causing brittle failure [4,5]. The addition of fibers could restrain the dilation and delay the crack propagation, owing to its confinement effect [6]. Alternatively, when under tension, concrete could suddenly crack, which could be alleviated via the addition of fibers that could increase the first cracking strength and create a higher post cracking strength.…”

Section: Introductionmentioning

confidence: 99%

Bio-inspired self-prestressing concrete (SPC) involving basalt fibers and expansive agent

Chu

Khan

Deng

et al. 2022

Cement and Concrete Research

Self Cite

View full text Add to dashboard Cite

Synergistic effects of steel fibres and expansive agent on steel bar-concrete bond

Cited by 47 publications

References 37 publications

Performance of engineered fibre reinforced concrete (EFRC) under different load regimes: A review

Performance of engineered fibre reinforced concrete (EFRC) under different load regimes: A review

Durability of bond between carbon/glass hybrid fiber-reinforced polymer (HFRP) bar and concrete in water

Bio-inspired self-prestressing concrete (SPC) involving basalt fibers and expansive agent

Contact Info

Product

Resources

About