Mechanical behavior of FRP confined rubber concrete under monotonic and cyclic loading

Cao, Yugui; Li, Longlong; Liu, Muyu; Wu, Yufei

doi:10.1016/j.compstruct.2021.114205

Cited by 26 publications

(7 citation statements)

References 40 publications

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“…35 CR was obtained by grinding waste rubber tires to the size range of 0-4.75 mm, similar as natural fine aggregate. The apparent density of rubber is 1.05 g/cm 3 , slightly larger than that of water. Before the substitution of CR for river sand, finely ground CR particles were sifted and separated into size ranges of 4.75-2.36, 2.36-1.18, 1.18-0.60, 0.60-0.30, and 0.30-0 mm, respectively.…”

Section: Raw Materialsmentioning

confidence: 80%

“…The chemical compositions are listed in Table 1 with 57.40% calcium oxide, 21.91% silicon dioxide, and 6.41% aluminum oxide. The specific surface area and specific gravity of cement are 385.2 m 2 /kg and 3.10 g/cm 3 , respectively. Coarse aggregate used belongs to natural limestone as per Chinese standard GB/T 14685 34 with maximum nominal diameter of 19.0 mm and apparent density of 2.64 g/cm 3 .…”

Section: Raw Materialsmentioning

confidence: 99%

“…The specific surface area and specific gravity of cement are 385.2 m 2 /kg and 3.10 g/cm 3 , respectively. Coarse aggregate used belongs to natural limestone as per Chinese standard GB/T 14685 34 with maximum nominal diameter of 19.0 mm and apparent density of 2.64 g/cm 3 . Natural river sand with fineness modulus of 2.69 and apparent density of 2.66 g/cm 3 was adopted in accordance with GB/T 14684.…”

Section: Raw Materialsmentioning

confidence: 99%

“…With the continuous growth of global transportation, huge amount of waste tires are generated annually, 1,2 in which about 500 million tires have been placed in landfills, 3 causing tremendous pressure on the environment. 4 How to deal with waste truck or vehicle tires scientifically and properly has become an important issue for sustainable development, especially in the traffic industry.…”

Section: Introductionmentioning

confidence: 99%

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Impact of crumb rubber particle size on the mechanical and microstructure properties of rubberized concrete

Ren

Tian

et al. 2022

Structural Concrete

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Crumb rubber (CR) concrete (CRC) characterized with high ductility and environment friendliness, has recently been studied widely in the field of green concrete. Generally, high volume fraction of CR in cementitious system leads to low strength. However, the effect of CR particle size has not been concluded yet. This paper focuses on the impact of CR size on the mechanical and microstructure properties of CRC. Two novel substitution approaches of CR for natural fine aggregate are adopted. In total, 10 groups are designed and experimentally tested for their workability in fresh state and mechanical properties in hardened state. Brittleness coefficient, fineness modulus, and micro‐morphology of CRC were analyzed and discussed. Results show that as size of CR decreases, workability improves significantly, apparent density and strength exhibit a firstly decrease and then increase trend, with the lowest value obtained around 1.18 mm CR size. The brittleness of concrete was significantly improved in the presence of CR, and the improvement was more significant for smaller‐sized CR. Weak ITZs between CR particles and interfacial porosity are the main reasons for the sharp strength deterioration. Crack arresting effect of CR makes the crack propagation path more tortuous, and smaller particle‐sized CR exhibits greater capability.

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Section: Raw Materialsmentioning

confidence: 80%

Section: Raw Materialsmentioning

confidence: 99%

Section: Raw Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of crumb rubber particle size on the mechanical and microstructure properties of rubberized concrete

Ren

Tian

et al. 2022

Structural Concrete

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“…This is shown in Table 5 . Although the RRA aggregate reduces the energy absorption capacity of the specimen, at the same time it has the elasticity and recovery ability to reduce the stress concentration of the specimen in the dynamic loading process, which means the RASM specimen with higher RRA content has better crack resistance and seismic capacity, and has a stronger ability to withstand cyclic loading [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

Energy Dissipation and Dynamic Fragmentation of Alkali-Activated Rubber Mortar under Multi-Factor Coupling Effect

Shi

et al. 2022

Materials

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Recycled rubber aggregate (RRA) made from ground tire rubber has been promoted for its light weight and shock resistance. The high alkalinity of alkali-activated slag mortar has a modification effect on the surface of RRA. This paper studies the performance of alkali-activated slag mortar using RRA as aggregate (RASM), which has significance for applications in low-carbon building materials. The orthogonal test analysis method was used to analyze the significance and correlation of the main variables of the test. The dynamic energy absorption capacity and crushing state of RASM under the synergistic effect of various factors were studied using the separating Hopkinson pressure bar (SHPB) test system. The energy absorption characteristics and failure modes of RASM were analyzed by SEM and microscopic pore characterization. The results show that the increase of the alkali equivalent of the mix ratio will increase the peak value of the absorption energy of the specimen. When the size of the RRA is between 0.48 mm~0.3 mm, the dynamic energy absorption of the specimen will reach its peak value. Although the increase in the total volume of RRA will reduce the energy absorption capacity of RASM specimens, its crack resistance is enhanced.

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Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected to axial loading

Jiang

Yang

Deng

2023

Front. Struct. Civ. Eng.

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Mechanical behavior of FRP confined rubber concrete under monotonic and cyclic loading

Cited by 26 publications

References 40 publications

Impact of crumb rubber particle size on the mechanical and microstructure properties of rubberized concrete

Impact of crumb rubber particle size on the mechanical and microstructure properties of rubberized concrete

Energy Dissipation and Dynamic Fragmentation of Alkali-Activated Rubber Mortar under Multi-Factor Coupling Effect

Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected to axial loading

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