Concrete with fine and coarse recycled aggregates: E-modulus evolution, compressive strength and non-destructive testing at early ages

Velay-Lizancos, Mirian; Martínez-Lage, Isabel; Azenha, Miguel; Granja, José Luís Duarte; Vázquez-Burgo, Pablo

doi:10.1016/j.conbuildmat.2018.10.209

Cited by 77 publications

(32 citation statements)

References 41 publications

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“…For higher replacement ratio, a significant decrease of the elastic modulus was obtained. On hardening concrete, Velay-Lizancos et al [58] have observed that low substitution (<30%) of natural sand by recycled one decreases significantly the elastic modulus. Omary et al [56] also observed a significant reduction in elastic modulus with 30% of recycled sand.…”

Section: Elastic Modulusmentioning

confidence: 99%

Advanced techniques for the study of shrinkage-induced cracking of concrete with recycled aggregates at early age

Bendimerad

Delsaute

Rozière

et al. 2020

Construction and Building Materials

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Section: Elastic Modulusmentioning

confidence: 99%

Advanced techniques for the study of shrinkage-induced cracking of concrete with recycled aggregates at early age

Bendimerad

Delsaute

Rozière

et al. 2020

Construction and Building Materials

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“…For concrete mix with a full replacement of natural gravel by recycled one, the E-modulus is reduced by 31 to 39%. On hardening con-crete, Velay-Lizancos, et al (2018) have replaced 0, 8, 20 and 31% of natural sand and gravel by recycled one. Based on the results of the E-modulus since setting, a linear trend is observed between the replacement rate of the natural gravel and sand and the reduction of the Emodulus.…”

Section: Elastic Modulus and Poisson's Ratiomentioning

confidence: 99%

Special Issue: Interdisciplinary approaches for cement-based materials and structural concrete

Azenha¹,

Schlicke²,

Benboudjema³

et al. 2019

ACT

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This special issue of the Journal of Advanced Concrete Technology presents seven invited journal papers, which were selected on basis of outstanding conference contributions during the International RILEM/COST conference SynerCrete'18, held on 24-26 October 2018 in Funchal, Madeira Island, Portugal, which gathered 183 participants. The selection was made by the scientific committee and the chairpersons among 184 contributions. The conference itself dealt with interdisciplinary approaches for cement-based materials and structural concrete, intending to provide added value through collaborations across the entire field of structural concrete-ranging from concrete technology, over simulation and structural design, production and building, up to operation, monitoring and maintenance. Exciting fields of research such as performance-based design, 3D modelling for analysis/design, Building Information Modelling and even robotics (e.g. digital fabrication or robotics design) were included, while retaining focus on multi-scale approaches at time and spatial levels. Overall, the hereby promoted journal papers are representative for the successful balance act between a great versatility of the conference contributions and the targeted synergizing of expertise aiming on the ultimate goal of reliable and durable concrete structures. SynerCrete'18 also marked the end of COST Action TU1404 "Towards the next generation of standards for service life of cement-based materials and structures" (www.tu1404.eu), offering a final forum to the discussions raised during the funded period of the Action from 2014 to 2018. A sense of accomplishment was felt by all the members of the Action, in the view of the important achievements of networking tools that were brought about by the extended Round Robin Testing Programme (RRT+), the Numerical Benchmarking Activities and 24 Short Term Scientific Missions (STSMs). Some of the selected papers in this special issue are the result of fruitful collaborations initiated by COST Action TU1404. A further remark in regard to the wide international institutional support that this conference attained, is about the direct support of RILEM, fib, JCI and ACI. Specifically, with regard to the Japanese Concrete Institute, a mention is given to the special session dedicated to the most recent version of "JCI Guidelines for Control of Cracking of Mass Concrete", as it was indeed one of the most inspiring documents that influenced the genesis of COST Action TU1404.

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“…Recently, there was a shift in the direction of the research concerning recycled aggregates focusing more on RFA made with glass, lightweight materials, etc. The reason is that these studies [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] recommended not to include CDW as RFA anymore just on the basis of its functional properties. For that reason, in this study, the applicability of RFA in concrete in terms of all parameters (quality, environmental impact, energy consumption, toxicity and cost) was considered.…”

Section: Introductionmentioning

confidence: 99%

A Critical Review on the Influence of Fine Recycled Aggregates on Technical Performance, Environmental Impact and Cost of Concrete

Hafez

Kurda

et al. 2020

Applied Sciences

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The aim of this critical review is to show the applicability of recycled fine aggregates (RFA) in concrete regarding technical performance, environmental impact, energy consumption and cost. It is not possible to judge the performance of concrete by considering one dimension. Thus, this study focussed on the fresh and hardened (e.g., mechanical and durability) properties and environmental and economic life cycle assessment of concrete. Most literature investigated showed that any addition of recycled fine aggregates from construction and demolition waste as a replacement for natural fine aggregates proves detrimental to the functional properties (quality) of the resulting concrete. However, the incorporation of recycled fine aggregates in concrete was proven to enhance the environmental and economic performance. In this study, an extensive literature review based multi criteria decision making analysis framework was made to evaluate the effect of RFA on functional, environmental, and economic parameters of concrete. The results show that sustainability of RFA based concrete is very sensitive to transportation distances. Several scenarios for the transportation distances of natural and recycled fine aggregates and their results show that only if the transportation distance of the natural aggregates is more than double that of RFA, e the RFA based concrete alternatives would be considered as more sustainable.

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Concrete with fine and coarse recycled aggregates: E-modulus evolution, compressive strength and non-destructive testing at early ages

Cited by 77 publications

References 41 publications

Advanced techniques for the study of shrinkage-induced cracking of concrete with recycled aggregates at early age

Advanced techniques for the study of shrinkage-induced cracking of concrete with recycled aggregates at early age

Special Issue: Interdisciplinary approaches for cement-based materials and structural concrete

A Critical Review on the Influence of Fine Recycled Aggregates on Technical Performance, Environmental Impact and Cost of Concrete

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