Properties of rubberized concrete modified by using silane coupling agent and carboxylated SBR

Li, Gengying; Wang, Zhongkun; Leung, Christopher Kin Ying; Tang, Shengwen; Pan, Jun; Huang, Wenxi; Chen, E.

doi:10.1016/j.jclepro.2015.06.099

Cited by 125 publications

(33 citation statements)

References 43 publications

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“…Accordingly, after total replacement of the sand volume, a decrease in the mechanical performances of these composites was ascribed to the low density of the TR grains and to the voids (entrapped air) created by the aggregate at the cement/TR interface during mixing, which can explain the decrease of the specific weight and an almost double porosity of these samples with respect to the references [46,47,48,49,50,51,52] (Table 2).…”

Section: Resultsmentioning

confidence: 92%

“…This effect depends on the organic/inorganic interface properties. In fact, an unfavorable adhesion of the aggregate to the cement paste [46,47,48,49,50,51,52] was observed and ascribed to the hydrophobic nature of the tyres rubber and to the completely different chemistry of the compounds present in the polymeric structure and in the inorganic matrix (Figure 5A). This evidence was not observed in the sand-based references where a good aggregate/cement paste adhesion was present (Figure 5B).…”

Section: Resultsmentioning

confidence: 99%

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Environmentally Sustainable Cement Composites Based on End-of-Life Tyre Rubber and Recycled Waste Porous Glass

et al. 2019

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In this paper, environmentally sustainable cement mortars were prepared with end-of-life tyre rubber (TR) and recycled waste porous glass (PG) as aggregates in order to obtain lightweight products characterized by renewable and not-pretreated materials specifically for indoor applications. The secondary raw materials were added as partial and/or total replacement of the conventional sand aggregate. The resulting lightweight specimens were characterized by rheological, mechanical, thermal, microstructural and wettability tests. Fine tyre rubber aggregates affected the cohesiveness of the composites, as opposite to coarse tyre rubber and porous glass. The flexural and the compressive strengths of the porous glass samples were higher than the tyre rubber samples because of the higher stiffness and good adhesion of the glass to the cement paste as observed by microstructural observations. On the contrary, an unfavorable adhesion of the tyre aggregates to the cement paste was observed, together with discrete cracks after failure without separation of the two parts of the specimens. The latter result can explain the best results obtained by tyre rubber mortars in the case of impact compression tests where the super-elastic properties of the elastomeric material were evidenced by a deep groove before complete failure. Moreover, the thermal conductivity decrease of the lightweight porous TR and PG composites was in the range of ~80–90% with respect to the sand-based samples, which suggests that they can be used as plasters and masonries, and, in the case of tyre rubber specimens, outside applications are not excluded as observed from the wettability tests.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Environmentally Sustainable Cement Composites Based on End-of-Life Tyre Rubber and Recycled Waste Porous Glass

et al. 2019

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“…172 For this reason, various rubber chemical treatments have recently been tested with the purpose of improving adhesion. Treatments with NaOH, [173][174][175] HNO 3 and cellulosic derivatives, 176 and silane coupling agents 177 have been reported.…”

Section: Recycled Tires In Concrete Productionmentioning

confidence: 99%

Binders alternative to Portland cement and waste management for sustainable construction – Part 2

Coppola

Bellezze

Belli

et al. 2018

Journal of Applied Biomaterials & Functional Materials

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The paper represents the "state of the art" on sustainability in construction materials. In Part 1 of the paper, issues related to production, microstructures, chemical nature, engineering properties, and durability of mixtures based on binders alternative to Portland cement were presented. This second part of the paper concerns the use of traditional and innovative Portland-free lime-based mortars in the conservation of cultural heritage, and the recycling and management of wastes to reduce consumption of natural resources in the production of construction materials. The latter is one of the main concerns in terms of sustainability since nowadays more than 75% of wastes are disposed of in landfills.

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“…They report a reduced charge transmission for all the replacement levels. Li et al [56] conducted rapid chloride permeability tests for concrete made with treated and untreated rubber aggregates. The rubber aggregates were pretreated with silane coupling agent and carboxylated strene-butadiene rubber latex.…”

Section: Durability Performancementioning

confidence: 99%

A review of Waste Tyre Rubber as an Alternative Concrete Consituent Material

2018

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The current global waste tyre generation far exceeds its consumption in terms of recycling and re-use. The traditional recycling and re-use methods like thermal incineration have proven ineffective, costly and in some cases environmentally unsustainable. Particularly, in developing countries where some of the sophisticated techniques required to process tyres to allow them to be utilised are either too costly or have not yet been developed. The situation has resulted in accumulation of large waste tyre stockpiles that pose health and safety risks. To combat the problem, the use of waste tyre rubber in concrete construction has been proposed. Several studies have been conducted to assess the effects of the inclusion of waste tyre rubber in its different forms (fibres, particles), for concrete production and the results are promising. Although there are some apparent demerits to the inclusion of tyre rubber in concrete, the potential benefits seem to overshadow the negatives. This paper reviews published research on the scientific and technical viability of using waste tyre rubber in concrete production. It discusses the production and properties of waste tyre particles. It highlights advances made with regards to the incorporation of tyre rubber material in concrete, focusing on the engineering properties of the tyre rubber modified concrete. In conclusion, recommendations for future research and possible application for the material will be discussed.

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Properties of rubberized concrete modified by using silane coupling agent and carboxylated SBR

Cited by 125 publications

References 43 publications

Environmentally Sustainable Cement Composites Based on End-of-Life Tyre Rubber and Recycled Waste Porous Glass

Environmentally Sustainable Cement Composites Based on End-of-Life Tyre Rubber and Recycled Waste Porous Glass

Binders alternative to Portland cement and waste management for sustainable construction – Part 2

A review of Waste Tyre Rubber as an Alternative Concrete Consituent Material

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