Influence of recycled aggregates on the mechanical and tribological behavior of concrete

Effects of Recycled Aggregate on Concrete Mix and Exposure to Chloride

“…Muduli and Mukharjee [10] found that recycled aggregate concrete mix has higher air content than natural aggregate concrete mix. Falek et al [11] concluded that the relationship between the density and the amount of fine recycled aggregate in concrete mixes is an inverse relationship; when the proportion of fine recycled aggregate increases, the density of the concrete mix decreases. is is because of the low density of the fine recycled aggregate compared to the density of the crushed fine stone and because the aggregate to cement ratio has an insignificant effect on concrete density.…”

Construction and Demolition Waste As Recycled Aggregate for Environmentally-Friendly Concrete Paving.

“…According to the results of σ, samples containing up to 25 wt.% of RA showed similar values to those of the control specimen (ranging from 20.0 to 20.9 MPa) although the best results were achieved by the specimens incorporating up to 25 wt.% FRA (Falek et al 2017;Idagu et al 2017;Tabsh and Abdelfatah 2009;Sharmal et al 2014;Silva et al 2014). In contrast, lower strength values were obtained for replacements greater than 25 wt.%, achieving a 15% reduction in the compressive strength of the materials prepared by complete replacement of NA by RA.…”

“…Nowadays, CDW has been successfully recycled as base and sub-base of road construction (Bennet et al 2000;Poon and Chan 2006a), paving projects (Arulrajah et al 2014;Taha et al 2002), footpaths projects (Arulrajah et al 2013) and pipe-bedding projects (Rahman et al 2014;Taha et al 2002) Consequently, previous studies using RA obtained from CDW have developed new applications mainly focused on the use of these sorts of materials as NA replacement in concrete production (Falek et al 2017;Favaretto et al 2017;Idagu et al 2017;Lau et al 2014;Martín-Morales et al 2011;Tabsh and Abdelfatah 2009;Sharmal et al 2014;Silva et al 2014;) and concrete materials manufacturing, i.e., concrete bricks (Contreras et al 2016;Poon et al 2002;Rodríguez et al 2016;Sadek et al 2013) and concrete block (Laiva et al 2013;Poon et al 2002Poon et al , 2009Sabai et al 2013;Soutsos et al 2011a). Moreover, several studies have focused on the application of the RA in the production of concrete paving but without promising results (Jankovic et al 2012;Juan-Valdés et al 2019;Chan 2006b, 2007;Soutsos et al 2011bSoutsos et al , 2012.…”

Construction and demolition waste as recycled aggregate for environmentally friendly concrete paving

“…Nowadays, CDW has been successfully recycled as base and sub-base of road construction (Poon and Chan 2006a;Tavakoli Mehrjardi et al 2020;Zhang et al 2021), paving projects (Arulrajah et al 2014;Gedik 2020;Özalp et al 2016), footpaths projects (Arulrajah et al 2013;Arulrajah et al 2016;Pourkhorshidi et al 2020) and pipe-bedding projects (Arulrajah et al 2017;Rahman et al 2014;Taha et al 2002). Nevertheless, it is still necessary to develop new applications for the manufacture of new products, by developing originals processes, by seeking and finding new markets in order to absorb and reduce the vast volume of CDW worldwide production, and furthermore, to comply with the objective established by EU (Commission Consequently, previous studies using RA obtained from CDW have developed new applications mainly focused on the use of these sorts of materials as NA replacement in concrete production (Falek et al 2017;Favaretto et al 2017;Ibrahim et al 2020;Idagu 2017;Lau et al 2014;Martín-Morales et al 2011;Rao et al 2007;Robalo et al 2021;Tabsh and Abdelfatah 2009;Sharmal and Singla 2014;Silva et al 2014;Yang et al 2011) and concrete materials manufacturing, i.e., concrete bricks (Contreras et al 2016;Devi et al 2020;Poon et al 2002;Rodríguez et al 2016;Sadek et al 2013;Silva et al 2019) and concrete block (Kumar et al 2020;Leiva et al 2013;López et al 2018;Poon et al 2002Poon et al , 2009…”

“…Consequently, previous studies using RA obtained from CDW have developed new applications mainly focused on the use of these sorts of materials as NA replacement in concrete production (Falek et al 2017 ; Favaretto et al 2017 ; Ibrahim et al 2020 ; Idagu 2017 ; Lau et al 2014 ; Martín-Morales et al 2011 ; Rao et al 2007 ; Robalo et al 2021 ; Tabsh and Abdelfatah 2009 ; Sharmal and Singla 2014 ; Silva et al 2014 ; Yang et al 2011 ) and concrete materials manufacturing, i.e., concrete bricks (Contreras et al 2016 ; Devi et al 2020 ; Poon et al 2002 ; Rodríguez et al 2016 ; Sadek et al 2013 ; Silva et al 2019 ) and concrete block (Kumar et al 2020 ; Leiva et al 2013 ; López et al 2018 ; Poon et al 2002 , 2009 ; Sabai et al 2013 ; Soutsos et al 2011a ). Moreover, several studies have focused on the application of the RA in the production of concrete paving but without promising results (Jankovic et al 2012 ; Juan-Valdés et al 2019 ; Poon and Chan 2006b , 2007 ; Soutsos et al 2011b , 2012 ).…”