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
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	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
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 AT zbysekpavlik effectofaggregateandbindertypeonthefunctionalanddurabilityparametersoflightweightrepairmortars
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Effect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars

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