Effect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars

The subject matter of the work presented here is the development and evaluation of novel lightweight mortars that meet the functional and technical criteria imposed on repair mortars. In a broad experimental campaign, lime, natural hydraulic lime, and lime–cement mortars were designed and tested. Li...

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Autores principales: Martina Záleská, Milena Pavlíková, Martin Vyšvařil, Zbyšek Pavlík
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Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/d2c56e0b843a4151999cb1512c660624
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spelling oai:doaj.org-article:d2c56e0b843a4151999cb1512c6606242021-11-11T19:29:58ZEffect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars10.3390/su1321117802071-1050https://doaj.org/article/d2c56e0b843a4151999cb1512c6606242021-10-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/11780https://doaj.org/toc/2071-1050The subject matter of the work presented here is the development and evaluation of novel lightweight mortars that meet the functional and technical criteria imposed on repair mortars. In a broad experimental campaign, lime, natural hydraulic lime, and lime–cement mortars were designed and tested. Lightweight aggregate, expanded perlite, granules from expanded glass and zeolite were used as full replacements for quartz sand. The hardened mortars were tested at the ages of 28 days and 90 days. The conducted tests and analyses were focused on the assessment of structural, mechanical, hygric and thermal parameters. The salt crystallization resistance and effect of salt presence on the hygroscopicity of the investigated mortars were also investigated. The use of lightweight aggregates in the composition of mortars resulted in their high porosity, low density, satisfactory mechanical parameters, improved water vapor transmission capability and water absorption. The mortars with expanded perlite and glass granulate were ranked among thermal insulation mortars of classes T1 and T2, respectively. The use of lightweight aggregates enabled the development of mortars with great durability in terms of salt action, which was almost independent of binder type. The ability to accommodate water vapor was increased by the effect, i.e., the use of lightweight aggregates and the presence of salt in mortars increased porous space. Taking into account the compatibility, functional, and technical criteria, lime- and natural hydraulic lime-based lightweight mortarswere classified as repair mortars, providing improved thermal performance. The lime–cement lightweight plasters can be recommended only for repair of building structures where cement and lime–cement materials were original applied.Martina ZáleskáMilena PavlíkováMartin VyšvařilZbyšek PavlíkMDPI AGarticlerepair mortarslightweight aggregatehygrothermal performanceenergy efficiency enhancementsalt crystallization resistanceEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 11780, p 11780 (2021)
institution DOAJ
collection DOAJ
language EN
topic repair mortars
lightweight aggregate
hygrothermal performance
energy efficiency enhancement
salt crystallization resistance
Environmental effects of industries and plants
TD194-195
Renewable energy sources
TJ807-830
Environmental sciences
GE1-350
spellingShingle repair mortars
lightweight aggregate
hygrothermal performance
energy efficiency enhancement
salt crystallization resistance
Environmental effects of industries and plants
TD194-195
Renewable energy sources
TJ807-830
Environmental sciences
GE1-350
Martina Záleská
Milena Pavlíková
Martin Vyšvařil
Zbyšek Pavlík
Effect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars
description The subject matter of the work presented here is the development and evaluation of novel lightweight mortars that meet the functional and technical criteria imposed on repair mortars. In a broad experimental campaign, lime, natural hydraulic lime, and lime–cement mortars were designed and tested. Lightweight aggregate, expanded perlite, granules from expanded glass and zeolite were used as full replacements for quartz sand. The hardened mortars were tested at the ages of 28 days and 90 days. The conducted tests and analyses were focused on the assessment of structural, mechanical, hygric and thermal parameters. The salt crystallization resistance and effect of salt presence on the hygroscopicity of the investigated mortars were also investigated. The use of lightweight aggregates in the composition of mortars resulted in their high porosity, low density, satisfactory mechanical parameters, improved water vapor transmission capability and water absorption. The mortars with expanded perlite and glass granulate were ranked among thermal insulation mortars of classes T1 and T2, respectively. The use of lightweight aggregates enabled the development of mortars with great durability in terms of salt action, which was almost independent of binder type. The ability to accommodate water vapor was increased by the effect, i.e., the use of lightweight aggregates and the presence of salt in mortars increased porous space. Taking into account the compatibility, functional, and technical criteria, lime- and natural hydraulic lime-based lightweight mortarswere classified as repair mortars, providing improved thermal performance. The lime–cement lightweight plasters can be recommended only for repair of building structures where cement and lime–cement materials were original applied.
format article
author Martina Záleská
Milena Pavlíková
Martin Vyšvařil
Zbyšek Pavlík
author_facet Martina Záleská
Milena Pavlíková
Martin Vyšvařil
Zbyšek Pavlík
author_sort Martina Záleská
title Effect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars
title_short Effect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars
title_full Effect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars
title_fullStr Effect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars
title_full_unstemmed Effect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars
title_sort effect of aggregate and binder type on the functional and durability parameters of lightweight repair mortars
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/d2c56e0b843a4151999cb1512c660624
work_keys_str_mv AT martinazaleska effectofaggregateandbindertypeonthefunctionalanddurabilityparametersoflightweightrepairmortars
AT milenapavlikova effectofaggregateandbindertypeonthefunctionalanddurabilityparametersoflightweightrepairmortars
AT martinvysvaril effectofaggregateandbindertypeonthefunctionalanddurabilityparametersoflightweightrepairmortars
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