Application of recycled concrete aggregates for stabilization of clay reinforced with recycled tire polymer fibers and glass fibers

Shourijeh, Piltan Tabatabaie; Rad, Amir Masoudi; Bigloo, Farhad Heydari Bahman; Binesh, S.M.

doi:10.1016/j.conbuildmat.2022.129172

Cited by 21 publications

(7 citation statements)

References 67 publications

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“…These fibres melt at high temperatures and generate a capillary network that relieves inner pressure inside concrete and prevents spalling. This effect has also been recently observed with recycled tyre polymer fibres [14,15]. Regarding the enhancement of concrete tensile strength, steel fibres have traditionally proven to provide good results in structural applications [16,17], in fact, if certain requirements are met, some standards permit to reduce or even eliminate reinforcing steel rebars.…”

Section: Introductionmentioning

confidence: 71%

Numerical Simulation of PFRC Fracture Subjected to High Temperature by Means of a Trilinear Softening Diagram

Suárez,

Enfedaque,

Alberti

et al. 2023

Materials

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Fibre-reinforced concrete (FRC) has been used for decades in certain applications in the construction industry, such as tunnel linings and precast elements, but has experienced important progress in recent times, boosted by the inclusion of guidelines for its use in some national and international standards. Traditional steel fibres have been studied in depth and their performance is well-known, although in recent years new materials have been proposed as possible alternatives. Polyolefin macro-fibres, for instance, have been proven to enhance the mechanical properties of concrete and the parameters that define their behaviour (fibre length, fibre proportion or casting method, for instance) have been identified. These fibres overcome certain traditional problems related to steel fibres, such as corrosion or their interaction with magnetic fields, which can limit the use of steel in some applications. The behaviour of polyolefin fibre-reinforced concrete (PFRC) has been numerically reproduced with success through an embedded cohesive crack formulation that uses a trilinear softening diagram to describe the fracture behaviour of the material. Furthermore, concrete behaves well under high temperatures or fire events, especially when it is compared with other construction materials, but the behaviour of PFRC must be analysed if the use of these fibres is to be extended. To this end, the degradation of PFRC fracture properties has been recently experimentally analysed under a temperature range between 20 °C and 200 °C. As temperature increases, polyolefin fibres modify their mechanical properties and their shape, which reduce their performance as reinforcements of concrete. In this work, those experimental results, which include results of low (3 kg/m3) and high (10 kg/m3) proportion PFRC specimens, are used as reference to study the fracture behaviour of PFRC exposed to high temperatures from a numerical point of view. The experimental load-deflection diagrams are reproduced by modifying the trilinear diagram used in the cohesive model, which helps to understand how the trilinear diagram parameters are affected by high temperature exposure. Finally, some expressions are proposed to adapt the initial trilinear diagram (obtained with specimens not exposed to high temperature) in order to numerically reproduce the fracture behaviour of PFRC affected by high temperature exposure.

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Section: Introductionmentioning

confidence: 71%

Numerical Simulation of PFRC Fracture Subjected to High Temperature by Means of a Trilinear Softening Diagram

Suárez,

Enfedaque,

Alberti

et al. 2023

Materials

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“…In comparison to other materials used in the study, RG exhibited a significantly higher capacity to absorb moisture due to its high proportion of fine materials and porous particle surfaces. As a result, an increase in RG content led to an increase in the OMC [60]. Conversely, an increase in the RT content resulted in a decrease in the moisture-absorbing capacity of the mixture, leading to a lower OMC [33].…”

Section: Resultsmentioning

confidence: 99%

Cement and Fly Ash-Treated Recycled Aggregate Blends for Backfilling Trenches in Trafficable Areas

Yaghoubi,

Al-Taie,

Miri Disfani

et al. 2023

Preprint

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“…The mechanisms by which RCA improves soil properties, such as mechanical interlocking and pozzolanic reactions, will be explored in depth, drawing on scientific principles and experimental data. Shourijeh (2022) conducted experiments to assess the efficacy of recycled concrete aggregates (RCA) as a cementitious reagent for stabilizing clay reinforced with recycled tire polymer fibers (RTPFs) and glass fibers (GFs). Their findings indicated that both RTPFs and GFs exhibited an optimal fiber content, resulting in the highest unconfined compressive strength (UCS) for fiber-reinforced clay.…”

Section: Recycled Concrete Aggregate (Rca) In Soil Stabilizationmentioning

confidence: 99%

A Review on Sustainable Soil Stabilization Incorporating Recycled Concrete Aggregate and Ground Granulated Blast Furnace Slag

Kumar,

Jyoti,

Giri

2024

Int. J. Res. Publ. Rev.

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Soil stabilization is a fundamental characteristic of civil engineering, crucial for ensuring the stability and longevity of pavement infrastructure projects. Traditional stabilization methods often rely on non-renewable resources and may carriage environmental challenges. In response, this review study explores the potential of utilizing construction & demolition wastes (C&D) and ground granulated blast furnace slag (GGBS) as alternative materials for soil stabilization. The extensive overview of soil stabilization techniques, highlighting the importance of sustainable construction practices in addressing environmental concerns. It then delves into the properties and applications of recycled concrete aggregate (RCA), derived from the crushing and processing of concrete waste. RCA's physical and mechanical properties, such as particle size distribution and shape, are discussed together with its role in enhancing soil stability. Past research studies and experimental data demonstrate RCA's effectiveness in improving soil strength, durability, and permeability. Subsequently, the use of GGBS, a by-product of the iron and steel industry, famous for its pozzolanic and hydraulic properties. The production process, chemical composition, and unique characteristics of GGBS are explored in detail, emphasizing its potential as a soil stabilizer. Past research also demonstrates GGBS's ability to enhance soil properties, reduce carbon emissions, and minimize waste generation. Furthermore, the review investigates the combined application of RCA and GGBS in soil stabilization, highlighting their synergistic effects and potential benefits. In conclusion, this review underscores the importance of adopting alternative materials such as RCA and GGBS in soil stabilization to promote environmental sustainability and resilience in civil engineering projects.

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Application of recycled concrete aggregates for stabilization of clay reinforced with recycled tire polymer fibers and glass fibers

Cited by 21 publications

References 67 publications

Numerical Simulation of PFRC Fracture Subjected to High Temperature by Means of a Trilinear Softening Diagram

Numerical Simulation of PFRC Fracture Subjected to High Temperature by Means of a Trilinear Softening Diagram

Cement and Fly Ash-Treated Recycled Aggregate Blends for Backfilling Trenches in Trafficable Areas

A Review on Sustainable Soil Stabilization Incorporating Recycled Concrete Aggregate and Ground Granulated Blast Furnace Slag

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