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Open AccessArticle

Influence of Granulometry on Thermal and Mechanical Properties of Cement Mortars Containing Expanded Perlite as a Lightweight Aggregate

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Department of Building Science, University of Bio-Bio, Concepción 4030000, Chile
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Department of Wood Engineering, University of Bio-Bio, Concepción 4030000, Chile
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Department of Design and Theory of Architecture, University of Bio-Bio, Concepción 4030000, Chile
*
Author to whom correspondence should be addressed.
Materials 2019, 12(23), 4013; https://doi.org/10.3390/ma12234013
Received: 9 October 2019 / Revised: 4 November 2019 / Accepted: 12 November 2019 / Published: 3 December 2019
(This article belongs to the Special Issue Testing of Cement-Based Materials)
This research aims at clarifying the influence of the granulometry of expanded perlite, on the thermal conductivity, structural strength, density, and water absorption of lightweight mortars. Three original perlite gradations have been obtained and three pairs of twin test mortars have been tested with those gradations. SEM tests have also been run to clarify the interaction, at a microscopic level, between the expanded perlite and the cement grouting. The results indicate that the mere manipulation of the granulometry may have a considerable and very beneficial effect on the mixture’s properties, such as thermal conductivity and water absorption. View Full-Text
Keywords: thermal conductivity; fineness modulus; expanded perlite; mechanical strength; lightweight mortar thermal conductivity; fineness modulus; expanded perlite; mechanical strength; lightweight mortar
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MDPI and ACS Style

Leyton-Vergara, M.; Pérez-Fargallo, A.; Pulido-Arcas, J.; Cárdenas-Triviño, G.; Piggot-Navarrete, J. Influence of Granulometry on Thermal and Mechanical Properties of Cement Mortars Containing Expanded Perlite as a Lightweight Aggregate. Materials 2019, 12, 4013.

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