Effect of recycled rubber aggregate size on fracture and other mechanical properties of structural concrete

Karunarathna, Sachinthani; Linforth, Steven; Kashani, Alireza; Liu, Xuemei; Ngo, Tuan

doi:10.1016/j.jclepro.2021.128230

Cited by 62 publications

(34 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…He believes that this is due to the soft and elastic properties of rubber. The larger the size Buildings 2022, 12, 999 3 of 32 of the rubber particles, the more space they occupy in the rubber concrete, and the more severe the failure response of the structure under load [23].…”

Section: Type and Size Of Rubber Particlesmentioning

confidence: 99%

“…The high elastic properties of rubber can make up for the high brittleness of concrete, while the low elastic modulus of concrete has always been the focus of research. The work of Karunarathna [23] shows that the elastic modulus of concrete is obviously reduced after the incorporation of rubber, and rubber can delay the development of structural cracks. Meanwhile, rubber particles can also act as bridges between cracks when concrete is damaged by force, as shown in Figure 4.…”

Section: Main Ingredients Compositionmentioning

confidence: 99%

See 1 more Smart Citation

Modification of Rubberized Concrete: A Review

Zhu

Lü

et al. 2022

Buildings

View full text Add to dashboard Cite

One of the environmental problems causing concern in the world today is the black pollution caused by the accumulation of waste rubber resources. Relevant experimental studies have proved that rubber concrete can help solve the black pollution problem caused by waste rubber tires, but it is undeniable that rubber particles will reduce the mechanical properties of concrete. To this end, many studies on the modification of rubberized concrete have been carried out, and this paper summarizes these studies, considering compressive strength, durability performance and insulation performance. The results show that chemical pretreatments, such as sodium hydroxide, can significantly improve the adhesion between rubber particles and cement matrixes. Mineral powder admixtures, such as silica fume and fiber admixtures, e.g., PP fibers, can improve the compressive strength of rubber concrete.

show abstract

Section: Type and Size Of Rubber Particlesmentioning

confidence: 99%

Section: Main Ingredients Compositionmentioning

confidence: 99%

Modification of Rubberized Concrete: A Review

Zhu

Lü

et al. 2022

Buildings

View full text Add to dashboard Cite

show abstract

“…This is mostly because of rubber particles’ greater water absorption rates, which cause the mixture to have less free water overall and, as a consequence, have lower workability. Different sizes of rubber show a decline in flow with a rise in tire particle replacements [ 40 ].…”

Section: Fresh Concretementioning

confidence: 99%

“…The rubber surfaces of tire crumbs and shreds may be seen in SEM pictures to have rough and jagged surfaces. It is obvious that tire crumbs have more jagged edges than tire shreds [ 40 ]. According to research, this roughness increases the frictional resistance to concrete’s flowability, causing mixes with tire crumb replacement to slump less [ 48 ].…”

Section: Fresh Concretementioning

confidence: 99%

“…Due to rubber’s lower elastic modulus compared to natural aggregates and its poor adherence to cement paste, both the CS and elastic modulus decrease. For the finer rubber replacement, the strength loss is less noticeable [ 40 ]. The effects of adding waste rubber to composite Portland concrete were explored by Albano et al [ 73 ].…”

Section: Mechanical Strengthmentioning

confidence: 99%

See 1 more Smart Citation

Overview of Concrete Performance Made with Waste Rubber Tires: A Step toward Sustainable Concrete

et al. 2022

View full text Add to dashboard Cite

Utilizing scrap tire rubber by incorporating it into concrete is a valuable option. Many researchers are interested in using rubber tire waste in concrete. The possible uses of rubber tires in concrete, however, are dispersed and unclear. Therefore, a compressive analysis is necessary to identify the benefits and drawbacks of rubber tires for concrete performance. For examination, the important areas of concrete freshness, durability, and strength properties were considered. Additionally, several treatments and a microstructure investigation were included. Although it has much promise, there are certain obstacles that prevent it from being used as an aggregate in large numbers, such as the rubber’s weak structural strength and poor binding performance with the cement matrix. Rubber, however, exhibits mechanical strength comparable to reference concrete up to 20%. The evaluation also emphasizes the need for new research to advance rubberized concrete for future generations.

show abstract

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

Ren

Tian

et al. 2022

Structural Concrete

View full text Add to dashboard Cite

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.

show abstract

Effect of recycled rubber aggregate size on fracture and other mechanical properties of structural concrete

Cited by 62 publications

References 45 publications

Modification of Rubberized Concrete: A Review

Modification of Rubberized Concrete: A Review

Overview of Concrete Performance Made with Waste Rubber Tires: A Step toward Sustainable Concrete

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

Contact Info

Product

Resources

About