Creep and shrinkage of recycled aggregate concrete

Domingo-Cabo, A.; Lázaro, Carlos; López-Gayarre, F.; Serrano-López, Miguel A.; Ros, Pedro Serna; Castaño-Tabares, J.O.

doi:10.1016/j.conbuildmat.2009.02.018

Cited by 364 publications

(165 citation statements)

References 4 publications

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“…This leads to a change in stress distribution of mortar and aggregates over time during the creep process, both at early and latter ages. Similar findings have been reported by other authors (2,6,69,78,89,90), who noted largely higher (up to 84%) creep strains in concrete fully made with coarse recycled aggregates than in conventional concrete, while these increments lessened to 5-26% in concrete with low replacement ratios (20-30%) ( Figure 16). …”

Section: Creepsupporting

confidence: 79%

“…Regarding RC with low replacement ratios (20-30%), different researches revealed that its shrinkage presents values slightly higher than those obtained in conventional concrete (increments of 3-8%) (2,10,78). When replacement get up to 50%, the shrinkage deformations in RC are 13-33% higher than those registered in conventional concretes.…”

Section: Shrinkagementioning

confidence: 99%

“…When replacement get up to 50%, the shrinkage deformations in RC are 13-33% higher than those registered in conventional concretes. In general, shrinkage grows as the replacement ratio increases (2,6,69,78,80,82,83). …”

Section: Shrinkagementioning

confidence: 99%

“…Although most authors conclude that shrinkage increases up to 35-80% in concrete with 100% recycled aggregate (2,49,62,77,78), a few have stated that this concrete may show similar shrinkage deformations to that obtained in conventional concrete, even with replacement ratios of 100%, when using high-quality recycled aggregate or different mixing methods (10,69,79,80). Kou et al (10) analysed the effect of using recycled aggregates with different water absorption coefficients and composition.…”

Section: Shrinkagementioning

confidence: 99%

“…where ε c1 is the strain at peak stress and ε c is the strain in compression Collecting the data of different authors (2,6,10,56,69,77,78,80,82,83) Figure 14 analyses the relationship "RC's shrinkage-reference concrete's shrinkage" taking into account different ratios of coarse recycled aggregate, from 20% to 100%. This figure confirms that the recycled aggregate ratio influences the shrinkage gain.…”

Section: Shrinkagementioning

confidence: 99%

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Recycled concrete with coarse recycled aggregate. An overview and analysis

González-Fonteboa

Seara-Paz

Brito³

et al. 2018

Mater. construcc.

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ABSTRACT:The construction field has contributed to environmental degradation, producing a high amount of construction and demolition waste (C&D waste) and consuming large volumes of natural resources. In this context, recycled concrete (RC) has been recognised as a means to preserve natural resources and reduce space for waste storage. During the last decades, many researchers have developed works studying different recycled concrete properties.This review focuses on structural RC made with coarse recycled aggregate from concrete waste. The main objective is to provide a state of the art report on RC's properties and an analysis on how to predict them taking into account relevant research works. Moreover, the study tries to collect and update RC findings, proposing equations to define RC's performance, in terms of mechanical strength, modulus of elasticity, stress-strain, creep and shrinkage. RESUMEN:Hormigón reciclado con árido grueso reciclado. Una visión general y análisis. El campo de la construcción ha contribuido a la degradación del medio ambiente, produciendo gran cantidad de residuos de construcción y demolición y consumiendo grandes volúmenes de recursos naturales. En este contexto, el hormigón reciclado se ha presentado como una opción para preservar los recursos naturales y reducir el espacio destinado a vertedero. Así, durante las últimas décadas, muchos investigadores han desarrollado trabajos para estudiar las propiedades del hormigón reciclado.Este artículo se centra en el hormigón estructural fabricado con árido reciclado grueso procedente de residuos de hormigón. El principal objetivo es desarrollar un estado del arte que recoja las principales propiedades del hormigón reciclado y un análisis de cómo calcularlas teniendo en cuenta un gran número de trabajos relevantes en este ámbito. Adicionalmente, el estudio recopila y actualiza el conocimiento sobre estos hormigones, proponiendo ecuaciones que permitan definir sus resistencias mecánicas, módulo de elasticidad, tensión-deformación, fluencia y retracción.

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Section: Creepsupporting

confidence: 79%

Section: Shrinkagementioning

confidence: 99%

Section: Shrinkagementioning

confidence: 99%

Section: Shrinkagementioning

confidence: 99%

Section: Shrinkagementioning

confidence: 99%

See 3 more Smart Citations

Recycled concrete with coarse recycled aggregate. An overview and analysis

González-Fonteboa

Seara-Paz

Brito³

et al. 2018

Mater. construcc.

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Dyes as Visible Light Photoredox Organocatalysts

2011

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Base force element method based on the complementary energy principle for the damage analysis of recycled aggregate concrete

Wang

Peng

Kamel

et al. 2019

Numerical Meth Engineering

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Summary The finite element method (FEM) is an effective approach for exploring the failure mechanism of heterogeneous materials. According to the complementary energy principle, the use of FEM might suffer from several difficulties in terms of keeping the elements and their boundaries balanced, as well as finding interpolation functions. In this study, we introduced an efficient approach to researching the failure mechanism of the material, named base force element method (BFEM), according to complementary energy principle. Specifically, the element compliance matrix of an arbitrary quadrilateral element with four mid‐edge nodes was expressed based on the complementary energy principle. Then, the node displacement was obtained by the governing equation using the Lagrange multiplier method. In addition, both the compliance matrix and the node displacement were represented as explicit expressions without the use of Gaussian integration. A numerical model of the recycled aggregate concrete (RAC) was established according to the Monte Carlo method. A comparative sample of the digital image model was also established using digital image technology. The influences of substituting recycled aggregate and the relative mechanical properties of adhered mortar to those of new mortar on the failure mechanism of RAC were studied. The simulation results indicated that the BFEM is an effective approach to researching the damage mechanism of heterogeneous materials.

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Creep and shrinkage of recycled aggregate concrete

Cited by 364 publications

References 4 publications

Recycled concrete with coarse recycled aggregate. An overview and analysis

Recycled concrete with coarse recycled aggregate. An overview and analysis

Dyes as Visible Light Photoredox Organocatalysts

Base force element method based on the complementary energy principle for the damage analysis of recycled aggregate concrete

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