Sustainable Utilization of Foundry Waste: Cracking Property Analysis of Basalt Fiber-Reinforced Rubber Concrete

Gong, Yafeng; Song, Jiaxiang; Zhang, Yu-Wei; Jiang, Tiechao

doi:10.1061/jmcee7.mteng-14781

Cited by 3 publications

(2 citation statements)

References 35 publications

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“…Regarding the types and characteristics of fibres, the selection of fibres with a higher tensile strength and elasticity modulus is beneficial for enhancing the fracture properties of concrete [26,27]. Finer and softer fibres mainly limit the development of microcracks into macroscopic cracks, whereas larger and stiffer fibres mainly limit the development of macroscopic cracks and reduce the crack width [28,29]. Therefore, the addition of hybrid fibres is more effective in improving the fracture properties of concrete.…”

Section: Introductionmentioning

confidence: 99%

Combined Effects of Steel and Glass Fibres on the Fracture Performance of Recycled Rubber Concrete

Li,

Pan,

Zhen

et al. 2024

Buildings

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As an environmentally friendly construction material, recycled rubber concrete (RRC) is commonly used as a road material owing to its excellent flexural strength and crack resistance. Previous studies have shown that the addition of fibres is an effective method for improving the crack resistance of concrete. The purpose of this study is to investigate the fracture performance of RRC reinforced with steel fibres (SFs) and glass fibres (GFs). A total of 28 RRC mixtures were prepared. The results of the fracture test showed that the addition of SFs and GFs significantly enhanced the RRC fracture performance. The maximum increases or decreases in flexural strength, brittleness coefficient, fracture energy, initial fracture toughness, and unstable fracture toughness were 64.9, −34.6, 775.6, 92.0, and 118.4%, respectively. The ideal GF content is usually in the range of 0.4–0.6% and decreases with increasing SF content. In addition, scanning electron microscope (SEM) tests were conducted to explore the mechanism of the effect of hybrid fibres on RRC at a microscopic level. The results show that SFs were always pulled out, while GFs were pulled apart at the initial defects. At the same time, excessive GFs caused more initial defects. These results are expected to provide theoretical direction and experimental support for the practical application of hybrid fibre-reinforced recycled rubber concrete (HFRRRC).

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Section: Introductionmentioning

confidence: 99%

Combined Effects of Steel and Glass Fibres on the Fracture Performance of Recycled Rubber Concrete

Li,

Pan,

Zhen

et al. 2024

Buildings

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“…As a new type of cement-based concrete, rubber granule-basalt fiber composite modified concrete (RBFC) combines the advantages of both concrete types, including high durability, high toughness, and high strength [25,26]. Research on the bonding properties of RBFC and rebar is an important part of promoting the application of RBFC in engineering structures.…”

Section: Introductionmentioning

confidence: 99%

Constitutive Model of Bond-Slip between Rubber Granule–Basalt Fiber Composite Modified Concrete and Rebar

Gong,

Jiang,

Sun

et al. 2023

Applied Sciences

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The bonding properties between rubber granule–basalt fiber composite modified concrete (RBFC) and rebar greatly impact the load-carrying capacity, stiffness, and crack development of RBFC structures. In this paper, the effects of rebar diameter, bonding length, and concrete type on the bonding properties between RBFC and rebar were investigated using center pull-out tests. The bond stress–slip curve as well as the bond strength and its influencing factors were discussed in detail, and a semi-theoretical and semi-empirical model of RBFC with rebar was established. According to the findings, when rubber granules were added to concrete, its bond strength with rebar decreased. At a dosage of 5%, the bond strength was reduced by approximately 4% compared to ordinary concrete (OC) under the same conditions. It was shown that the addition of small amounts of rubber granules did not significantly reduce the bond strength. On the other hand, the incorporation of an appropriate amount of basalt fibers had a positive effect on the bond strength. An admixture of 4.56 Kg/m3 of fibers increased the bond strength by 3% compared to OC under the same conditions. The bond strength of RBFC with these two additions was improved by approximately 2% compared to OC under the same conditions. When the bonding length was 60 to 100 mm, the ultimate bond strength decreased with increasing bonding lengths. The bond strength decreased by 13.91–16.72% for every 20 mm increase in bonding length. When the rebar diameter was 12 to 16 mm, the ultimate bond stress decreased as the rebar diameter increased. The bond strength decreased by 3.96–5.94% for every 2 mm increase in rebar diameter. The segmental bond–slip constitutive model between RBFC and rebar, established using the results of the center pull-out test, can provide a reference basis for engineering applications of RBFC.

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Comparative analysis of rubber/cementitious interface enhanced by multiple modifying agents in rubber concrete - experimental and molecular dynamics studies

Feng,

Jiang,

Wang

et al. 2024

Composite Interfaces

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Sustainable Utilization of Foundry Waste: Cracking Property Analysis of Basalt Fiber-Reinforced Rubber Concrete

Cited by 3 publications

References 35 publications

Combined Effects of Steel and Glass Fibres on the Fracture Performance of Recycled Rubber Concrete

Combined Effects of Steel and Glass Fibres on the Fracture Performance of Recycled Rubber Concrete

Constitutive Model of Bond-Slip between Rubber Granule–Basalt Fiber Composite Modified Concrete and Rebar

Comparative analysis of rubber/cementitious interface enhanced by multiple modifying agents in rubber concrete - experimental and molecular dynamics studies

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