A multiscale model for pervious lime-cement mortar with perlite and cellulose fibers
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/55492DOI: 10.1016/j.conbuildmat.2017.11.032
ISSN: 0950-0618
Date
2018-01Funders
Financial support for this research was provided by the Grant for training of Lecturers (FPU-UAH 2013), funded by University of Alcalá. Some of the components were supplied by Omya Clariana S.L. and Cementos Portland Valderrivas S.A.
Bibliographic citation
Construction and Building Materials, 2018, v. 160, pp. 136-144
Keywords
Pervious lime-cement mortar
Multiscale model
Cellulose fibers
Perlite
Thermal properties
Acoustic performance
Project
info:eu-repo/grantAgreement/UAH//FPU-UAH2013/ES//
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
(c) 2017 Elsevier
Access rights
info:eu-repo/semantics/openAccess
Abstract
A pervious lime-cement mortar (PLCM) with perlite (P) and cellulose fibers (FC) was studied for better understanding the relationships among mortar composition, microstructure and properties, especially thermal and acoustic performance. Mortar microstructure was studied by optical and scanning electron microscopy, water absorption and nitrogen adsorption/desorption tests. A multiscale model for PLCM with and without P and/or FC was proposed: a three-phase macrostructural model consisting on a gap-graded aggregate, a paste shell and a continuous void network; paste phase was described as a multiphase microstructure. Paste thickness and active void size were identified as PLCM macrostructural parameters. The use of P and FC widened the paste shell, reducing the active void size. While the effect of P depends on particle size rather than the proportion used, the effect of FC depended on fiber amount. The model could be useful for optimizing the design of PLCM and predicting thermal and acoustic performance.
Files in this item
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multiscale_palomar_CBM_2018.pdf | 2.713Mb |
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Files | Size | Format |
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multiscale_palomar_CBM_2018.pdf | 2.713Mb |
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