Properties and utilizations of waste tire rubber in concrete: A review

Siddika, Ayesha; Mamun, Md. Abdullah Al; Alyousef, Rayed; Amran, Mugahed; Aslani, Farhad; Alabduljabbar, Hisham

doi:10.1016/j.conbuildmat.2019.07.108

Cited by 307 publications

(114 citation statements)

References 139 publications

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“…It was seen that the compressive strain of cement mortar increased with the increase in CRC, illustrating the better deformability for the cement mortar filled with more CRC. This is consistent to the previous studies on the rubberized cement mortar, due to the lower elastic modulus of rubber crumbs (Khaloo et al, 2008; Pham et al, 2018; Siddika et al, 2019). Moreover, the GFs were calculated from the fitting lines, with the values of 72.2, 77.6, 62.7 and 57.6 for the cement mortar filled with 10%, 20%, 30% and 40% CRC, respectively.…”

Section: Resultssupporting

confidence: 93%

Mechanical strength and self-sensing capacity of smart cementitious composite containing conductive rubber crumbs

Dong

Wang

et al. 2020

Journal of Intelligent Material Systems and Structures

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The effects of conductive rubber crumbs on the mechanical properties and self-sensing capacities of cementitious composites are investigated in this study. The rubberized cementitious composites with five different contents of conductive rubber crumbs are incorporated, ranging from 0%, 10%, 20%, 30% and 40% by mass of fine aggregate. Under the uniaxial cyclic compression, all the conductive rubber crumbs–filled cement composites exhibit excellent repeatability of piezoresistivity. The mortar with 20% conductive rubber crumbs at a water-to-binder ratio of 0.42 displayed the best piezoresistive sensitivity. Based on the relative positions of conductive rubber crumbs in the rubberized cement mortar, three conductive mechanisms were proposed for the conductive rubber crumbs, including complete isolation state, neighbouring state and the contact state. The isolation state plays a dominant role when the content of the conductive rubber crumbs is low, in which the piezoresistive behaviour is mainly controlled by the resistivity changes in cement matrix. In the neighbouring state, pores or voids in the gaps between nearby conductive rubber crumbs make the conductive rubber crumbs easier to connect, thus decreasing the resistivity under uniaxial compression. As for the contact state, the decreased contact resistance and the absence of sand between conductive rubber crumbs lead to higher resistivity changes under cyclic compression. The related results indicate that conductive rubber crumbs in cement mortar have application potentials for structural health monitoring.

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Section: Resultssupporting

confidence: 93%

Mechanical strength and self-sensing capacity of smart cementitious composite containing conductive rubber crumbs

Dong

Wang

et al. 2020

Journal of Intelligent Material Systems and Structures

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“…Worldwide, tire production exceeds 2.9 billion units per year [ 1 ]. It is estimated that for every tire placed in the market, another tire reaches its service life and becomes waste [ 2 ]. This massive amount of waste occupies a large area in landfills and causes environmental hazards.…”

Section: Introductionmentioning

confidence: 99%

“…Rubber from recycled tires are a source of sustainable new material that are also used to create environmentally friendly and low-cost composites [ 10 ]. In civil engineering materials, researchers have used rubber from recycled tires in mortars [ 5 ]; cement concrete [ 2 , 4 , 11 ]; geogrids in granular soils [ 12 ]; aggregates [ 13 , 14 ]; soil reinforcement [ 15 ]; composite membranes [ 16 , 17 ]; and asphalt [ 18 , 19 , 20 ]. The use of metal fiber waste from tires is less explored; however, researchers have investigated the effect of fiber waste from tires in the mechanical, fire resistance, and acoustic properties of concrete [ 21 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Asphalt Mixtures Containing Metallic Fibers from Recycled Tires to Promote Crack-Healing

et al. 2020

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This paper reports part of an international research project with the long-term aim of developing more sustainable asphalt mixture with crack-healing properties by the addition of recycled metallic waste from industrial sources. Specifically, this article presents an evaluation of the physical, thermophysical, and mechanical properties of asphalt mixtures with metallic fiber obtained from recycled tires for crack-healing purposes. Detailed results on the crack-healing of asphalt mixtures will be reported in a second article. Results showed a small reduction on the bulk density and increase in the air voids content was quantified with increasing fiber contents. The experimental results showed that mixing and compaction was more difficult for higher fiber contents due to less space for the bitumen to freely flow and fill the voids of the mixtures. Computed tomography (CT) results allowed to identify clustering and orientation of the fibers. The samples were electrically conductive, and the electrical resistivity decreased with the increase of the fiber content. Fiber content had a direct effect on the indirect tensile stiffness modulus (ITSM) and strength (ITS) that decreased with increasing temperature for mixtures and with increase in fiber content. However, the indirect tensile strength ratio (ITSR) was within acceptable limits. In short, results indicate that fibers from recycled tires have a potential for use within asphalt mixtures to promote crack-healing.

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“…The development of the society and transportation is accompanied by an exponential increase in the production of tires. It is also associated with the production of waste tires [1]. In 2017, the global tire production exceeded 2.9 billion units.…”

Section: Introductionmentioning

confidence: 99%

The Properties of Recycled Rubber From Waste Tires in the Production of Cement Composites

Svoboda¹,

Václavík²,

Dvorský³

et al. 2020

GSE

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This article presents the results of a study dealing with the use of a combination of recycled rubber from waste tires as a 100% substitute in the production of cement composites. Aggregate was replaced with recycled rubber in two ratios, namely the ratio of 50/50 and the ratio of 40/60 of the share of fraction 0/1 mm and fraction 1/3 mm. The designed formulas of cement composites were subjected to the tests of their physical and mechanical properties in order to determine the properties of the used recycled rubber combination. The tests included the consistency of the grain curve, mixing water properties, consistency of cement mortar, and strength characteristics (tensile flexural strength and compressive strength). The study presents results that are fundamentally different from the comparative samples and their use in the building industry; however, at the same time, they open up new possibilities of their utilization as a building material.The consistency of fresh mortar was determined by means of a diffusion test carried out according to ČSN EN 1015-3 [18] using a flow table. Determination of tensile flexural strength and compressive strengthThe determination of tensile flexural and compressive strengths was performed after 3, 7 and 28 days of age of the test specimens according to . The testing was carried out using the prepared test specimens with the dimensions of 40x40x160 mm, which were stored in a water bath prior to the test. Formtest instrument with a compressive force of 100KN and 300KN was used as the testing equipment. Determination of hardened mortar densityThe test specimens prepared according to formulas Z2 and Z3 were dried to a stable weight and subsequently tested to determine the density of hardened mortar according to ČSN EN 1015-10 standard [20]. RESULTS AND DISCUSSION Determination of grain-size curve of recycled rubberSieves with mesh sizes of 0.063, 0.125, 0.25, 0.5, 1.0, 1.6, 2.0, 2.5, 3.0, 4.0, and 5.0 mm were used to determine the grain-size curve of rubber granulate with the fractions of 0/1 and 1/3 mm. The resulting grain-size curves are shown in Figure 2. by using admixtures (e.g. plasticizers). At the same time, these results open up new possibilities for the utilization of this material as an environmentally friendly building material. The modifications of this cement compound and further testing of its physical and mechanical properties will be the subject of further research.

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Properties and utilizations of waste tire rubber in concrete: A review

Cited by 307 publications

References 139 publications

Mechanical strength and self-sensing capacity of smart cementitious composite containing conductive rubber crumbs

Mechanical strength and self-sensing capacity of smart cementitious composite containing conductive rubber crumbs

Evaluation of Asphalt Mixtures Containing Metallic Fibers from Recycled Tires to Promote Crack-Healing

The Properties of Recycled Rubber From Waste Tires in the Production of Cement Composites

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