Strength Reduction Factor of Concrete with Recycled Rubber Aggregates from Tires

Gregori, Amedeo; Castoro, Chiara; Marano, Giuseppe Carlo; Greco, Rita

doi:10.1061/(asce)mt.1943-5533.0002783

Cited by 42 publications

(12 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The elastic modulus of standard concrete is about 2.0-3.0 × 10 4 MPa. This is about 30,000 times the elastic modulus of CRC which is about 0.5-2.0 MPa [100]. Under external load, the deformation of the rubber aggregates is much larger than that of the cement mix.…”

Section: Interfacial Bonding Between the Cr Particles And Cement Matrixmentioning

confidence: 87%

Crumb Rubber in Concrete—The Barriers for Application in the Construction Industry

Kara De Maeijer,

Craeye,

Blom

et al. 2021

Infrastructures

View full text Add to dashboard Cite

This state-of-the-art review was aimed to conduct a comprehensive literature survey to summarize experiences of crumb rubber (CR) application in concrete within the last 30 years. It shows that certain gaps prevent obtaining a coherent overview of both mechanical behaviour and environmental impact of crumb rubber concrete (CRC) to object to the stereotypes which prevent to use of CR in concrete in the construction industry. Currently, four major barriers can be distinguished for a successful CR application in the concrete industry: (1) the cost of CR recycling, (2) mechanical properties reduction, (3) insufficient research about leaching criteria and ecotoxicological risks and (4) recyclability of CRC. The application of CR in concrete has certainly its advantages and in general cannot be ignored by the construction industry. CR can be applied, for example, as an alternative material to replace natural aggregates and CRC can be used as recycled concrete aggregates (RCA) in the future. A certain diversity for the CR application can be introduced in a more efficient way when surface treatment and concrete mix design optimization are properly developed for each type of CR application in concrete for possible field applications. The role of CRC should not be limited to structures that are less dependent on strength.

show abstract

Section: Interfacial Bonding Between the Cr Particles And Cement Matrixmentioning

confidence: 87%

Crumb Rubber in Concrete—The Barriers for Application in the Construction Industry

Kara De Maeijer,

Craeye,

Blom

et al. 2021

Infrastructures

View full text Add to dashboard Cite

show abstract

“…In Figure 5, the SRF values, which correspond to substitutions greater than a 50%, increase instead of decreasing further. This is not physically significant because when the amount of rubber particles in the mixture increases, the compressive strength must decrease [27,[49][50][51][52].…”

Section: Comparing Gpr and Svm Model Performancementioning

confidence: 99%

“…In different studies, authors noticed that the size, proportion in concrete, and different surface textures of the rubber particles have a significant effect on concrete strength properties. Generally, the reduction in compressive strength is observed to be larger when coarse aggregates are replaced with crumb rubber compared to fine aggregates [6,12,13,[25][26][27]. Concrete containing coarse rubber aggregates exhibits a reduction in strength but also significant energy absorption [28].…”

Section: Introductionmentioning

confidence: 99%

Predicting the Compressive Strength of Rubberized Concrete Using Artificial Intelligence Methods

2021

Self Cite

View full text Add to dashboard Cite

In this study, support vector machine (SVM) and Gaussian process regression (GPR) models were employed to analyse different rubbercrete compressive strength data collected from the literature. The compressive strength data at 28 days ranged from 4 to 65 MPa in reference to rubbercrete mixtures, where the fine aggregates (sand fraction) were substituted with rubber aggregates in a range from 0% to 100% of the volume. It was observed that the GPR model yielded good results compared to the SVM model in rubbercrete strength prediction. Two strength reduction factor (SRF) equations were developed based on the GPR model results. These SRF equations can be used to estimate the compressive strength reduction in rubbercrete mixtures; the equations are provided. A sensitivity analysis was also performed to evaluate the influence of the w/c ratio on the compressive strength of the rubbercrete mixtures.

show abstract

“…Recycled rubber has been used not only in rubber‐based equipment such as seismic isolators but also in cementitious materials or concrete. A study reported in the literature [ 13 ] investigated the effects of the partial replacement of natural concrete aggregates with waste tire rubber on the concrete compressive strength. The proposed material, called rubberized concrete, has mechanical and rheological properties suitable for civil engineering applications and leads to an effective solution of recycling discarded tires.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on rubber compounds made of reactivated ethylene propylene diene monomer for fiber reinforced elastomeric isolators

Habieb

Cerchiaro²,

Quaglini

et al. 2020

Polymer Engineering & Sci

View full text Add to dashboard Cite

A huge amount of rubber waste coming from tire industry or other sources (eg, weather strips producers) has attracted interest from researchers to investigate the possibility of recycling used rubber for various products, particularly in construction sector. This article presents a series of experimental and numerical investigations to evaluate the feasibility of regenerated synthetic rubber ethylene propylene diene monomer (EPDM) for production of a building seismic isolation system. Four rubber blends using two different sources of regenerated EPDM are considered in this study. The mechanical properties of the recycled rubber under study are evaluated through uniaxial tensile and relaxation tests, considering the accelerated aging effect. Based on several hyperelasticity and viscosity models of rubber available in the literature, several numerical test simulations on rubber compounds and on a prototype of fiber reinforced elastomeric isolators (FREIs) are performed. The test results reveal that the proposed regenerated EPDM compounds can be particularly suitable for the production of unbonded FREIs, especially because they are able to exhibit low/moderate tensile stresses at high‐shear strain. The results also show that not all regenerated rubber blends fulfill the durability requirements of rubber for seismic isolation after accelerated aging tests. The durability of the specimens seems to be mainly affected by the choice of the regenerated rubber source.

show abstract

Strength Reduction Factor of Concrete with Recycled Rubber Aggregates from Tires

Cited by 42 publications

References 41 publications

Crumb Rubber in Concrete—The Barriers for Application in the Construction Industry

Crumb Rubber in Concrete—The Barriers for Application in the Construction Industry

Predicting the Compressive Strength of Rubberized Concrete Using Artificial Intelligence Methods

Numerical study on rubber compounds made of reactivated ethylene propylene diene monomer for fiber reinforced elastomeric isolators

Contact Info

Product

Resources

About