The influence of waste crumb rubber in reducing the alkali–silica reaction in mortar bars

Afshinnia, Kaveh; Poursaee, Amir

doi:10.1016/j.jobe.2015.10.002

Cited by 40 publications

(15 citation statements)

References 38 publications

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“…The crumb rubber was prepared by mechanized crushing of waste tires followed by sieving. The specific gravity was 1.16 similar to the other reported values of crushed waste tires [2,15]. The SEM-photomicrographs of both aggregates showed that the surface texture of the crumb rubber particle was porous with the rough surface while river sand particle was dense and homogeneous as shown in Fig.…”

Section: Methodssupporting

confidence: 83%

“…Furthermore, when crumb rubber was used at 100% of the replacement level, the compressive strength of GPMs and PCMs were much reduced to similar values. The decrease in compressive strength was due to the lower modulus of elasticity of the crumb rubber particles compared to the typical mineral aggregates, as well as the weak bonding between paste and crumb rubber particles [15]. However, the compressive strength at 28 days of GPMs and PCMs containing crumb rubber in this study were in the range of 2.…”

Section: Compressive and Flexural Strengthscontrasting

confidence: 58%

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Utilization of Crumb Rubber as Aggregate in High Calcium Fly Ash Geopolymer Mortars

Sata¹,

Zaetang²,

Wongsa³

et al. 2019

GEOMATE

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This research was carried out to find out the possibility of utilizing tire crumb rubber waste as fine aggregate in fly ash-based geopolymer mortars (GPMs). The effect of replacement of river sand with crumb rubber at the levels of 0, 25, 50, 75, and 100% by volume on the geopolymer mortar properties including workability, dry density, compressive strength, flexural strength, thermal conductivity, ultrasonic pulse velocity (UPV), water absorption, and porosity were studied. The results were compared to those of the Portland cement-based mortars (PCMs). The test results demonstrated that the higher crumb rubber content resulted in the less dense matrix of mortar. However, GPMs with crumb rubber resulted in a significant improvement in flexural strength. The average ratio of flexural to compressive strengths of GPMs was 25% compared to 15% of PCMs. Also, the lower dry density and thermal conductivity of GPMs indicated better insulating properties than those of PCMs.

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Section: Methodssupporting

confidence: 83%

Section: Compressive and Flexural Strengthscontrasting

confidence: 58%

Utilization of Crumb Rubber as Aggregate in High Calcium Fly Ash Geopolymer Mortars

Sata¹,

Zaetang²,

Wongsa³

et al. 2019

GEOMATE

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show abstract

“…Various research has been done to study the properties of concrete incorporating rubber aggregates. The researchers found that a mixture of concrete containing granular rubber can improve toughness [4], reduces the unit weight [22], improves ductility and resistance to thermal changes [16], improve sound absorption [23], and provides better durability when compared to ordinary concrete [3,5,20]. However, there are few studies on the behavior of cementbased materials containing rubber granules exposed to aggressive environments.…”

Section: Introductionmentioning

confidence: 99%

Contribution to the Study of the Durability of Rubberized Concrete in Aggressive Environments

Kechkar¹,

Belachia²,

Cherait³

2020

Civil and Environmental Engineering Reports

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Today, much of the world’s waste, in particular used tires, is accumulating as a potential source of major environmental and economic problems. In order to better preserve the environment, and in the face of changes in the legislation in force, many recovery actions have been carried out especially in the field of building materials.The present research aims to contribute to the study of the mechanical properties and durability of concretes based on rubber aggregates. To achieve this objective, we have contemplated incorporating therein amounts of rubber granules according to different volume substitution percentages being 10%, 17.5%, and 25%. A comparison of the results with a control concrete has been established.The obtained results make it possible to demonstrate that the substitution of a percentage of sand by rubber granules decreases the mechanical strengths and increases the expansion in water. On the other hand, it improves the resistance to attack from H2SO4, Na2SO4, and seawater. The latter is evaluated by the loss and gain in mass as well as the loss in mechanical resistance, especially in the long term (more than 90 days), decreases drying shrinkage, thus decreasing microscopic cracks and providing better durability.

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“…The provided extra space by CR can be also favourable for the expansion of the alkali-silica reaction (ASR) gel due to swelling. Afshinnia and Poursaee [130] examined the ASR expansion of mortar samples with 16% and 24% replaced CR, ASR expansion of the samples decreased by 43% and 39%, respectively.…”

Section: Durabilitymentioning

confidence: 99%

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

Kara De Maeijer,

Craeye,

Blom

et al. 2021

Infrastructures

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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.

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The influence of waste crumb rubber in reducing the alkali–silica reaction in mortar bars

Cited by 40 publications

References 38 publications

Utilization of Crumb Rubber as Aggregate in High Calcium Fly Ash Geopolymer Mortars

Utilization of Crumb Rubber as Aggregate in High Calcium Fly Ash Geopolymer Mortars

Contribution to the Study of the Durability of Rubberized Concrete in Aggressive Environments

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

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