Utilisation of construction and demolition materials with clay for road pavement subgrade

Çabalar, Ali Fırat; Zardikawi, O.A.A.; Abdulnafaa, Mohammed D.

doi:10.1080/14680629.2017.1407817

Cited by 67 publications

(21 citation statements)

References 22 publications

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“…In addition to aqueous wastes, the management of solid wastes such as excavated soils, ceramic tiles (Cabalar et al, 2016b), demolition materials (Cabalar et al, 2016a, 2017, 2020) and dredged sediments also raises the question of the fate of sulfates. The upgrading of this type of matrix is studied in geotechnical and civil engineering approaches as potential concrete and mortar components (Achour et al, 2019; Ennahal et al, 2019; Maherzi et al, 2020; Yang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Over-sulfated soils and sediments treatment: A brief discussion on performance disparities of biological and non-biological methods throughout the literature

Ahmat

Mamindy-Pajany

2021

Waste Manag Res

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High sulfate concentrations in industrial effluents as well as solid materials (excavated soils, dredged sediments, etc.) are a major hindrance for circular economy outlooks. SO42- acceptability standards are indeed increasingly restrictive, given the potential outcomes for public health and ecosystems. This literature review deals with the treatment pathways relying on precipitation, adsorption and microbial redox principles. Although satisfactory removal performances can be achieved with each of them, significant yield differences are displayed throughout the bibliography. The challenge here was to identify the parameters leading to this variability and to assess their impact. The precipitation pathway is based on the formation of two main minerals (ettringite and barite). It can lead to total sulfate removal but can also be limited by aqueous wastes chemistry. Stabilizer kinetics of formation and equilibrium are highly constrained by background properties such as pH, Eh, SO42- saturation state and inhibiting metal occurrences. Regarding the adsorption route, sorbents’ intrinsic features such as the qmax parameter govern removal yields. Concerning the microbial pathway, the chemical oxygen demand/SO42- ratio and the hydraulic retention time, which are classically evoked as yield variation factors, appear here to be weakly influential. The effect of these parameters seems to be overridden by the influence of electron donors, which constitute a first order factor of variability. A second order variability can be read according to the nature of these electron donors. Approaches using simple monomers (ethanol lactates, etc.) perform better than those using predominantly ligneous organic matter.

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Section: Introductionmentioning

confidence: 99%

Over-sulfated soils and sediments treatment: A brief discussion on performance disparities of biological and non-biological methods throughout the literature

Ahmat

Mamindy-Pajany

2021

Waste Manag Res

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“…As a general view, the re-use of CDW is mainly focused on the manufacture of new building materials as aggregate in concrete, in admixtures with Portland cement. Subsequently, the potential of CDW for the stabilization of road layers has been remarked in several pilot studies and research projects [8][9][10]. More specifically, a considerable number of thematic studies have been dedicated for assessing the potential of CDW on the treatment of unstable soils for improving their mechanical characteristics [11,12].…”

Section: Introductionmentioning

confidence: 99%

Engineering and environmental benefits of using construction wastes in ground improvement works

Dobrescu¹,

Calarasu²

2020

MATEC Web Conf.

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One of the key emerging trends to protect the environment is to reuse wastes generated from construction and demolition sites for various engineering purposes. Many studies are being developed for setting up and optimize the potential of recycled construction wastes. The aim of the paper is to estimate the degree of improvement for resistance parameters of soil mixed with 5% and 10% of concrete and brick and water-based polymeric suspension used as stabilizer agent, as well as drywall waste mixed with 5% eco-binder with puzzolanic character. Multiple options of mixtures, predominantly composed by clay soils with swelling potential, have been investigated in laboratory conditions in terms of compression strength at 7, 14 and 28 days curing time and deformability. In order to emphasize distinct benefits of tested mixtures, a comparative analysis of the parametric values has been achieved. The experimental results revealed the suitability of using construction wastes to be assimilated with natural or conventional materials, which leads to significant improvements rates of geotechnical parameters. A large-scale implementation of this type of practice can substantially contribute to the achievement of sustainable development targets by reusing construction waste according to the specific objectives of engineering works in terms of structure safety.

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“…The use of waste materials for soil reinforcement has been gaining popularity primarily because of its versatility, easy and cost-effective construction. For example, different forms of waste tires have been employed in some applications in civil engineering including insulation beneath roads, slope stability, and lightweight backfill retaining walls (Mitchell and Katti, 1981;Fatani, Bauer and Al-Joulani, 1991;Ahmed and Lovell, 1992;Edil and Bosscher, 1994;Masad et al 1996;Shahu, Yudhbir, and Kameswara,1999;Kim and Santamarina, 2008;Tanchaisawat, Bergado, Voottipruex and Shehzad, 2010;Sarkar, Abbas, and Shahu, 2012;Edincliler, Cabalar, Cevik and Cagatay, 2012;Cabalar, Karabash and Mustafa, 2014;Cabalar and Karabash, 2015;Gomes Correira, Winter and Puppala, 2016;Patel and Shahu, 2016;Seddon, Winter and Nettleton, 2018;Cabalar, Zardikawi and Abdulnafaa, 2019). In addition, investigations on plastic waste use as soil reinforcement material have proved its worth in geotechnical applications including road bases, embankments, slope stability, retaining walls by increases in shear strength, and reductions of post peak losses in soils (Maher and Ho 1994;Santoni et al 2001;Zornberg 2002;Consoli, Prietto and Ulbrich, 2007;Muntohar, 2012).…”

Section: Introductionmentioning

confidence: 99%

Aluminum Waste in Road Pavement Subgrade

Çabalar

Govar²,

Abdulnafaa

et al. 2020

Ing. Inv.

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This paper aims to investigate the use of spiral aluminum computer numerical control milling waste (CNC-W) in the construction of road pavement subgrade. The soil (CL) was mixed with CNC-W spirals with ratios of between 0% and 20%, and 5 percent increments by dry weight with different water contents. California Bearing Ratio (CBR), Unconfined Compressive Strength (UCS), and consolidation tests were conducted. The experimental results indicated that the inclusion of CNC-W spirals increased the CBR value of clay up to the 15% mixture ratio, then decreased it. Similarly, the UCS value of clay was increased to the same ratio, whilst the UCS was not able to be determined due to the failing of all specimens with a mixture ratio higher than 15%. The permeability and swelling values, as well as the consolidation characteristics of the mixtures, were defined. The swelling percentages decreased from 1,15 cm/sec to 0,81 cm/sec with an increment in the CNC-W spiral content. A reduction was observed in the coefficient of permeability (k) values up to 15% mixture ratio, whilst it remained constant with change in CNC-W spiral content with a 20% mixture ratio. Coefficient of consolidation demonstrated a similar pattern of behavior to the permeability changes

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Utilisation of construction and demolition materials with clay for road pavement subgrade

Cited by 67 publications

References 22 publications

Over-sulfated soils and sediments treatment: A brief discussion on performance disparities of biological and non-biological methods throughout the literature

Over-sulfated soils and sediments treatment: A brief discussion on performance disparities of biological and non-biological methods throughout the literature

Engineering and environmental benefits of using construction wastes in ground improvement works

Aluminum Waste in Road Pavement Subgrade

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