Mechanical properties of confined recycled aggregate concrete under axial compression

Xiao, Jianzhuang; Huang, Yijie; Yang, Jie; Zhang, Ch.

doi:10.1016/j.conbuildmat.2011.06.062

Cited by 179 publications

(63 citation statements)

References 15 publications

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“…However, stiffness of the RACFST columns is smaller than that of columns with NC. Xiao et al (2012a) confirmed that both the compressive and deformation capacities of RAC-filled steel tube columns and glass fibre reinforced plastic (GFRP) tubes were obviously improved. It was also found that when the RCA replacement ratio increases, the peak stress of columns decreases, while the corresponding peak strain increases, as shown in Figure 7.…”

Section: Circular Section Columnssupporting

confidence: 54%

“…The structural behaviour of circular RACFST stub columns has been reported by Huang et al (2012), Konno et al (1997Konno et al ( , 1998, Xiao et al (2012a), Wang et al (2011) and Chen et al (2013f). Huang et al (2012) Figure 2.…”

Section: Circular Section Columnsmentioning

confidence: 81%

“…The current interest in waste concrete recycling focuses primarily on the use of recycled aggregate in place of natural aggregate in the production of new concrete. This recycled concrete material, usually called recycled aggregate concrete (RAC), has been extensively studied in terms of its material-level properties (ACI-555; Nixon et al 1978;Xiao and Zhang 2010b;Xiao et al 2002Xiao et al , 2012aXiao et al , 2012bXiao et al , 2012cXiao et al , 2012dTopcu 1997;Shayan et al 2003;Juan and Gutierrez 2009). In recent years, significant concerns have also been raised about the performance and suitability of structural members manufactured with RAC development of the construction industry, the excessive consumption of natural resources and deterioration of the environment in China, a lot of relevant research results of structural members with RAC have been obtained by Chinese investigators.…”

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confidence: 99%

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Structural Behaviour of Composite Members with Recycled Aggregate Concrete — An Overview

Xiao

Shi

et al. 2015

Advances in Structural Engineering

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A series of investigations on structural behaviour, durability, fire-resistance and seismic performance of composite members with recycled aggregate concrete (RAC) have been carried out in the past 10 years (2005–2014). This paper is consisted of three parts: the first part introduces and discusses the research progress in regard to the structural behaviour of RAC filled steel tubular columns and beams; the second part concentrates on the structural behaviour of steel-reinforced RAC members, including columns, beams, shear walls and slabs; and the third part focuses on the long-term performance of composite members with RAC, involving fire resistance, durability and seismic performance. It seems that RAC composite members with different replacement ratios of recycled coarse aggregate have slightly lower or similar structural behaviour compared to that of normal concrete composite members. Review results reveal that it is feasible to apply steel-RAC composite members as structural applications. This intensive review provides a reasonable knowledge of the structural behaviour of steel-RAC composite members, and recommends further investigations on the failure mechanics and durability of steel-RAC composite members which are needed to promote safe and economic application in the future.

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Section: Circular Section Columnssupporting

confidence: 54%

Section: Circular Section Columnsmentioning

confidence: 81%

mentioning

confidence: 99%

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Structural Behaviour of Composite Members with Recycled Aggregate Concrete — An Overview

Xiao

Shi

et al. 2015

Advances in Structural Engineering

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“…A number of papers dealing with the experimental characterization of concrete mixtures employing different kinds of recycled aggregates have been published in the last few years [7][8][9][10][11][12][13][14][15][16][17][18][19][20]. In fact, Behiry [13] showed that by mixing recycled concrete aggregate (RCA) with traditional limestone aggregate (LSA), the mechanical properties of the mixture can be improved, taking the unconfined compressive strength as a quality indicator.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of Thermal and Hygrometric Characteristics of Building Structures Employing Recycled Plastic Aggregates and Geopolymer Concrete

et al. 2013

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Abstract:The correct estimation of building energy consumptions is assuming an always increasing importance, and a detailed reproduction of building structures, with all the single components involved, is necessary to achieve this aim. In addition, the current ecological development tries to limit the use of natural raw materials as building components, in favor of alternative (waste) materials, which ensure significant advantages from the economic, energetic and environmental point of views. In this work, dynamic heat and vapor transport in a typical three-dimensional (3D) building structure, involving different types of environmental-friendly concrete mixtures, have been simulated by using finite elements. In particular, the authors propose to substitute part of the aggregates with plastic waste and to use a fly ash based geopolymeric binder for the production of low conductivity concrete, to be employed in eco-efficient buildings. Concrete produced with natural limestone aggregates has been considered as the reference benchmark. The whole characterization of the different types of concrete tested in the present work has been obtained through laboratory experiments. The structure taken into account in the simulations is a 3D thermal bridge, typical of building envelopes. The thermal and hygrometric transient behavior of this structure, employing plastic waste in different percentages and geopolymer concrete, has been analyzed by the authors.

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“…It causes the decrease in mechanical strength [3]. Concrete manufactured using recycled aggregates could have mechanical properties equal to the natural aggregate concrete provided that the parent concrete is of good quality with high mechanical properties [4,5]. A threshold of substitution quantity can be observed, beyond this quantity, a decrease of the mechanical properties can be observed [6,7].…”

mentioning

confidence: 99%

Rheological Properties of Recycled Aggregate Concrete Using Superplasticizers

Braymand¹,

François²,

Feugeas³

et al. 2015

JCEA

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Abstract:The mechanical properties of recycled aggregates concrete from demolition have been studied for several years. It has been documented that rheological properties of these concrete are generally affected by use of recycled aggregates. They could present mechanical properties less affected by the presence of recycled aggregates if the initial concrete were of good quality. However, manufacturing problems, mainly attributed to the angular character of these aggregates and to the granulometry of recycled sand, limit their industrial use. The worth point of this study consists in the optimization of the concrete formulation using specific admixture, adapted to this aggregates in order to facilitate its manufacturing. It shows that the new generation of superplasticizers containing some copolymer polycarboxylate makes it possible to significantly improve the fluidity of the recycled aggregates concrete in its fresh state. The aim of this research is to control rheological properties of fresh recycled aggregates concrete with fine and coarse recycled aggregates to limit the negative influence of aggregates on mechanical properties of concrete.

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Mechanical properties of confined recycled aggregate concrete under axial compression

Cited by 179 publications

References 15 publications

Structural Behaviour of Composite Members with Recycled Aggregate Concrete — An Overview

Structural Behaviour of Composite Members with Recycled Aggregate Concrete — An Overview

Experimental and Numerical Analysis of Thermal and Hygrometric Characteristics of Building Structures Employing Recycled Plastic Aggregates and Geopolymer Concrete

Rheological Properties of Recycled Aggregate Concrete Using Superplasticizers

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