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Effect Of Expanded Perlite Aggregate Dosage On Properties Of Lightweight Concrete

Submitted2015-06-30
Last Update2015-06-30
TitleEffect Of Expanded Perlite Aggregate Dosage On Properties Of Lightweight Concrete
Author(s)Author #1
Author title:
Name: Malek Jedidi
Org: Higher Institute of Technological Studies of Sfax, Department of Civil Engineering, B.P.88, 3099 Sfax, Tunisia
Country:
Email: malekjedidi@yahoo.fr

Author #2
Author title:
Name: Omrane Benjeddou
Org: University Tunis El Manar, National Engineering School of Tunis, Civil Engineering Laboratory, B.P.37, 1002 Tunis, Tunisia.
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Email:

Author #3
Author title:
Name: Chokri Soussi
Org: University of Sfax, Faculty of Science of Sfax, Georesources, Materials, Environment and Global Change Laboratory, B.P.1171, 3000 Sfax, Tunisia.
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Other Author(s)
Contact AuthorAuthor #1
Alt Email: malekjedidi@yahoo.fr
Telephone:
KeywordsExpanded perlite aggregate, Dosage, Lightweight concrete, Compressive strength, Thermophysical properties
AbstractIn this paper, an experimental study was carried out in order to provide more data on the effects of expanded perlite aggregate (EPA) dosage on the compressive strength and thermophysical properties of lightweight concrete at different ages. The first part of this experimental study was devoted to the choice of the proper mixing procedure for expanded perlite concrete (EPC). Thereafter, six sets of cubic specimens and six sets of parallelepiped specimens were prepared at a water-to-cement ratio of 0.70 with varying replacement percentages of sand by EPA ranging from 0% to 80% by volume of sand. Compressive strength, thermal conductivity and thermal diffusivity were determined over curing age. Unit weights for the mixtures prepared varied between 560 and 1510 kg/mP3P. Compressive strength was decreased when perlite content was increased. The test results indicated that replacing natural aggregate by EPA increased the thermal resistance of the lightweight concrete and consequently, improved thermal insulation.
Paperview paper 3071.pdf (420KB)

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