Physico – mechanical properties of multi – recycled concrete from precast concrete industry

Salesa, Ángel; Pérez-Benedicto, Jose Ángel; Colorado-Aranguren, David; López-Julián, Pedro L.; Esteban, Luis; Sanz-Baldúz, Luis J.; Sáez-Hostaled, José L.; Ramis, Juan Pablo; Olivares, Daniel

doi:10.1016/j.jclepro.2016.09.058

Cited by 92 publications

(38 citation statements)

References 27 publications

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“…Comparison of CC and RAC-100% values with those found in other studies from the literature[6,12,25,31,39,40,55,[61][62][63][64][65][66][67][68][69][70].…”

mentioning

confidence: 86%

The influence of recycled aggregates from precast elements on the mechanical properties of structural self-compacting concrete

Fiol

Thomas

Muñoz

et al. 2018

Construction and Building Materials

109

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The construction industry is one of the sectors bearing the greatest responsibility for the consumption of natural resources and the generation of waste. Construction and demolition is one of the principal focuses of attention in the search for sustainable construction. Mean average production in Europe of Construction and Demolition Waste (CDW) stands at 0.38 t/per person/per year, and only countries such as Denmark and the Netherlands have recycling rates of over 85%. >35 million tons of CDW (1.1 t/per person/per year) are produced in Spain alone [1]. With regard to prefabricated concretes at an international level, the "Precast Sustainability Strategy and Charter" of the British Precast Concrete Federation is first and foremost [2]. This plan encourages precast firms to go beyond the requirements of current legislation, by instituting measures on a voluntary basis to add greater sustainability to their products and operations. In 2013, the British Precast Council approved a new battery of measures for implementation throughout the year. The Netherlands and Germany may be highlighted in Europe among the countries that opt for the precast industry, where precast solutions in construction amount to 45% and 38%, respectively [3]. An effort is made to comply with the basic requirement for "sustainable use of natural resources", included in EU Regulation 305/2011 [4] on harmonized conditions for the marketing of construction products. The European Regulation under article 11.2b [4] also includes the objective for Member states to adopt certain measures, among which: to guarantee recycling to a minimum of 70% by weight of Construction and Demolition Wastes (CDW) before 2020. The promotion of research studies related to the sustainability of companies dedicated to concrete products through the incorporation of recycled aggregates is an incentive and an advance for society. A large number of investigations have arisen from the exploitation of these waste products, in which the different forms of using Recycled Aggregates (RA) in the manufacture of concrete have been analysed [5-8], but there are few studies that use RA The influence of recycled aggregates from precast elements on the mechanical properties of structural self-compacting concrete F. Fiol a, ⁎

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“…Comparison of CC and RAC-100% values with those found in other studies from the literature[6,12,25,31,39,40,55,[61][62][63][64][65][66][67][68][69][70].…”

mentioning

confidence: 86%

The influence of recycled aggregates from precast elements on the mechanical properties of structural self-compacting concrete

Fiol

Thomas

Muñoz

et al. 2018

Construction and Building Materials

109

View full text Add to dashboard Cite

show abstract

“…Some researchers [4][5][6][7][8][9] found that the strength and elastic modulus of the RAC decrease while the deformation capacity increases with the increase in the RCA replacement percentage. However, other researchers [10][11][12][13][14][15] draw contrary conclusions. ey found that the strength of the RAC gets improved with the increase in the RCA replacement percentage, which is because that the high water absorption rate of the RCA reduces the effective water participation in the cement hydration reaction, and thereby causes a lower effective water-cement ratio.…”

Section: Introductionmentioning

confidence: 88%

Uniaxial Damaged Plastic Constitutive Relation of Recycled Aggregate Concrete

Cheng

2019

Advances in Materials Science and Engineering

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This paper presents a proposed uniaxial damaged plastic constitutive relation of recycled aggregate concrete (RAC) based on the experimental studies. A total of five groups of RAC specimens with different recycled coarse aggregate (RCA) replacement percentages of 0, 25%, 50%, 75%, and 100%, respectively, are tested under both monotonic loading and cyclic loading. The effect of the RCA replacement percentage is thoroughly investigated on a variety of mechanical properties, including the compressive strength, the peak strain, and the elastic modulus. Based on the test results, a uniaxial damage plastic constitutive relation of the RAC is proposed within the continuous thermodynamics framework. After validated by the experimental results, the proposed damaged plastic constitutive relation of the RAC is applied to perform nonlinear analysis of the RAC columns under cyclic loading, which provides close predictions of the hysteresis behavior of the RAC columns.

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“…Thomas et al [36] presented by using computerized microtomography that the adhered mortar volume of multiple recycled coarse aggregate (MRA) could be up to 80%. When the mechanical and physical properties were compared between the first generation and the multiple recycled concrete in the precast industry, the findings of Salesa et al [37] showed perfect mechanical performance of MRAC. The results showed that MRAC was superior to the control concrete of precast concrete samples and they supported the idea of adopting MRAC as a sustainable method of recycling.…”

Section: Multiple Recycled Concrete Aggregate (Mrca)mentioning

confidence: 99%

Literature review on steel fibre, silica fume and fly ash: improving methods for recycled and multiple recycled aggregate concretes

Shmlls

Bozsaky

Horváth

2021

Acta Tech. Jaurinensis

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If all concrete is to be recycled in a future scenario, recycled concrete will be needed. Usually concrete recycling causes loss of properties, but this does not have to be truth for all the mixtures. This paper shows a comprehensive knowledge about the improving methods used to keep the properties of the recycled aggregate concrete (RAC). In the reviewed literature several kinds of RAC were tested with various replacement ratios. The effect of adding steel fibres, silica fume or fly ash to the mixture were also examined both separately and together. Most of the experiments demonstrated excellent mechanical properties of the RAC compared with ordinary concretes. Based on these results the ideal RAC composition can be deduced and a future can be imagined when concrete can be recycled multiple times (MRAC).

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Physico – mechanical properties of multi – recycled concrete from precast concrete industry

Cited by 92 publications

References 27 publications

The influence of recycled aggregates from precast elements on the mechanical properties of structural self-compacting concrete

The influence of recycled aggregates from precast elements on the mechanical properties of structural self-compacting concrete

Uniaxial Damaged Plastic Constitutive Relation of Recycled Aggregate Concrete

Literature review on steel fibre, silica fume and fly ash: improving methods for recycled and multiple recycled aggregate concretes

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