Comprehensive modification of emulsified asphalt on improving mechanical properties of crumb rubber concrete

Lin, Qiang; Liu, Zanqun; Sun, Jinglin; Lei, Yu

doi:10.1016/j.conbuildmat.2023.130555

Cited by 19 publications

(10 citation statements)

References 18 publications

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“…Figure 11 indicates that as the crumb rubber content increases, the damage threshold decreases, indicating that incorporating crumb rubber will lead to more rapid deformation of concrete before it reaches the plastic stage. Figure 12 (1000× zoomed in) shows a scanning electron microscope image of the interfacial transition zone (ITZ) between the rubber particles, natural sand, and cement matrix, where the poor bonding performance between the rubber particles and cement matrix [2,47] only allows the rubber concrete to maintain linear elasticity for a short time. reaches the plastic stage.…”

Section: Analysis Of Model Parametersmentioning

confidence: 99%

“…reaches the plastic stage. Figure 12 (1000× zoomed in) shows a scanning electron microscope image of the interfacial transition zone (ITZ) between the rubber particles, natural sand, and cement matrix, where the poor bonding performance between the rubber particles and cement matrix [2,47] only allows the rubber concrete to maintain linear elasticity for a short time. ITZ between cement matrix and crumb rubber [22,23].…”

Section: Analysis Of Model Parametersmentioning

confidence: 99%

“…In the equation, σ = σ pk , and dσ dε = 0 is the ordinary concrete's peak stress. Based on the full stress-strain curve, the following geometric boundary conditions are identified: (1)…”

Section: Analysis Of Model Parametersmentioning

confidence: 99%

“…China's automobile industry has undergone rapid development in recent years, with the national rate of car ownership increasing from 281 million in 2020 to 417 million in 2022 [1]. The number of waste tires has increased accordingly, becoming the main source of waste rubber, which is a waste of resources and a major source of environmental pollution [2]. The utilization rate of waste tires in China is only 60%, which is far lower than the utilization rate of 90% or more that has been observed in developed countries [3].…”

Section: Introductionmentioning

confidence: 99%

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Axial Compression Damage Model and Damage Evolution of Crumb Rubber Concrete Based on the Energy Method

Guo,

Xue,

2024

Buildings

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The current constitutive model and damage evolution law of crumb rubber concrete (CRC) were obtained by fitting and changing parameters based on the normal concrete model. However, this model does not accurately reflect the characteristics of the material. In this paper, we studied the energy dissipation in the failure process of CRC to derive the constitutive model and damage evolution law of CRC based on the energy method. Four substitution rates of 5%, 10%, 15%, and 20% were selected, and the rubber concrete prism was prepared by replacing the natural fine aggregate with the same volume of crumb rubber aggregate. After that, uniaxial compressive tests were conducted. The energy lost due to the damage was calculated and analyzed, and the energy method was used to establish the damage evolution law and damage model of the crumb rubber concrete. The results demonstrated that the Guo Zhenhai damage model, which is based on the energy method, can more effectively explain the crumb rubber concrete stress–strain full curve, and the energy consumed as a result of the damage exhibits a growing and then reducing pattern with the increase in rubber doses. When the energy-based method is used, the Guo Zhenhai damage evolution model is similar to the damage evolution law calculated using the SIR damage evolution model. During uniaxial compression damage, rubber concrete with various rubber dosages demonstrated varying energy absorption in different deformation phases. When the rubber particle content was 10%, the energy absorption capacity of the specimen was 6.9% higher than that of normal concrete.

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Section: Analysis Of Model Parametersmentioning

confidence: 99%

Section: Analysis Of Model Parametersmentioning

confidence: 99%

Section: Analysis Of Model Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Axial Compression Damage Model and Damage Evolution of Crumb Rubber Concrete Based on the Energy Method

Guo,

Xue,

2024

Buildings

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“…particles enhanced the impact resistance and crack resistance. Large-sized rubber particles contributed to the concrete's vibration damping and sound absorption properties 5 .…”

Section: Siddique Et Al (2021)mentioning

confidence: 99%

Suitability Study on Strength Properties of Crumb Rubber in Geopolymer Concrete

Nair,

Kulkarni

2023

jmmf

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Due to an incessant upsurge in the construction industry and the steep increase in the cost of raw materials, researchers are focusing on various resources that can be replaced with cement as a construction material. One such material that is rich in Silicon and Aluminium is Flyash. Flyash as an additive to concrete made a way for a contemporary material that was coined as Geopolymer Concrete (GPC). In Geopolymer, alkaline activators such as sodium hydroxide or potassium hydroxide are mixed with sodium silicate so as to form geo-polymerization with products like GGBS, flyash etc. and which as a result binds the aggregate. This paper mainly emphasizes on role of Crumb Rubber (CR) in the formation of GPC replacing the fine aggregates by various percentages (5% - 15%) of CR. The Geopolymer mix design is proposed for M40 grade. Compressive and tensile strength tests were carried out on concrete modified with Flyash and GGBS (Ground Granulated Blast Furnace Slag) in 60:40 ratios. At a molarity of 14M, ratio of sodium silicate to sodium hydroxide is maintained as 2.5. The samples were placed in an ambient condition and were tested for strength on 7, 14 and 28 days. Based on the experimental results, it was observed that use of CR in GPC does not enhance the strength properties and cannot be used in high-end structural applications only.

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