Development and tests of lightweight aggregate using sewage sludge for nonstructural concrete

Mun, Kyung-Ju

doi:10.1016/j.conbuildmat.2005.09.009

Cited by 147 publications

(69 citation statements)

References 5 publications

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“…7e). As in the case of LWAs with 25% of fly ash (3.F(3)), layers are formed on the surface of the aggregates during expansion, preventing the adhesion thereof [25].…”

Section: Sem Resultsmentioning

confidence: 99%

“…The diameters of the pores in the LW As studied and the thickness of the layers formed thereon are depen dent on the above-mentioned balance between the gas pressure and the viscosity of the molten phase [25]: the largest pores are formed when the highest gas pressure is achieved within the tem perature range at which the viscosity is appropriate for the gas not to escape through the LW As by bubbling [3]. Previous studies [3,26,27] reported that increasing the inner temperature and the generation of molten ingredients in the green pellets effectively accelerate the formation of a glass phase.…”

Section: Sem Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure and mineralogy of lightweight aggregates produced from washing aggregate sludge, fly ash and used motor oil

González-Corrochano

Alonso-Azcárate

Rodas

et al. 2010

Cement and Concrete Composites

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“…7e). As in the case of LWAs with 25% of fly ash (3.F(3)), layers are formed on the surface of the aggregates during expansion, preventing the adhesion thereof [25].…”

Section: Sem Resultsmentioning

confidence: 99%

Section: Sem Resultsmentioning

confidence: 99%

Microstructure and mineralogy of lightweight aggregates produced from washing aggregate sludge, fly ash and used motor oil

González-Corrochano

Alonso-Azcárate

Rodas

et al. 2010

Cement and Concrete Composites

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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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“…Generally, for structural lightweight concrete the compressive strength is over 15 MPa and the flexural tensile strength is over 3 MPa. These results indicate that the lightweight aggregate using 50% limestone could be applied to structural lightweight concrete products [22]. The increase in the flexural tensile strength has the advantage that the corrosion resistance of such concrete will be improved.…”

Section: Resultsmentioning

confidence: 76%

Lightweight concrete with Algerian limestone dust. Part II: study on 50% and 100% replacement to normal aggregate at timely age

Kitouni

Houari

2015

Cerâmica

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A control lightweight concrete (LWC) mixture made with 50% and 100% of limestone as a replacement of coarse aggregates in weight was prepared. Limestone is used for economical and environmental concern. The concrete samples were cured at 65% relative humidity at 20 °C. The compressive and flexural tensile strengths, elastic modulus and Poisson's ratio of hardened concrete were measured. Laboratory compressive and tensile strength tests results showed that LWC can be produced by the use of limestone. The aim of this study is twofold: one is to design a lightweight concrete with the use of limestone that will provide an advantage of reduction in dead weight of a structure; and second is to obtain a more economical LWC mixture with the use of limestone. Keywords: lightweight aggregate concrete, limestone dust, flexural tensile strength, elastic modulus, compressive strength. Resumo

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Development and tests of lightweight aggregate using sewage sludge for nonstructural concrete

Cited by 147 publications

References 5 publications

Microstructure and mineralogy of lightweight aggregates produced from washing aggregate sludge, fly ash and used motor oil

Microstructure and mineralogy of lightweight aggregates produced from washing aggregate sludge, fly ash and used motor oil

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

Lightweight concrete with Algerian limestone dust. Part II: study on 50% and 100% replacement to normal aggregate at timely age

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