Recommendation of RILEM TC 243-SGM: functional requirements for surface repair mortars for historic buildings

Válek, Jan; Hughes, John Jay; Piqué, Francesca; Gulotta, Davide; Hees, Rob van; Papayiani, Ioanna

doi:10.1617/s11527-018-1284-y

Cited by 12 publications

(4 citation statements)

References 25 publications

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“…Lime-based binding materials can be used in a wide variety of mixtures depending on their function [12], such as masonry bedding mortars [2,13], renders and plasters [14][15][16], repointing materials as grouts [17][18][19][20][21], whitewash [22,23], ornamental pieces [24], wall painting support [25,26], finishing mortars [27], surface repair [28] or flooring mortars [29,30]. All these materials can be produced from diverse raw materials, obtaining both air lime (calcitic [31,32] and/or dolomitic [33][34][35][36]) or limes with hydraulic properties [37][38][39], all classified by EN 459-1 (2015) [40].…”

Section: Introductionmentioning

confidence: 99%

RILEM TC 277-LHS report: a review on the mechanisms of setting and hardening of lime-based binding systems

et al. 2021

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The main objective of RILEM TC LHS-277 “Specifications for testing and evaluation of lime-based repair materials for historic Structures” is the revision, adaption and, when necessary proposal, of the test methods to accurately study lime-based binding systems and mixtures, such as mortars and grouts. The empiric use of the lime-based composites and the predominant employ of cement in the field of Civil Engineering have led to the widespread application of test methods developed for cement-based composites to test the former. However, the clear differences in composition and performance between modern cement binders and lime-based materials would advise to explore specific test methods for the latter. To undertake this task the previous knowledge on the mechanisms of setting and hardening of these binders must be revised, arranged and synthesized. Processes such as drying, carbonation, hydration and pozzolanic reaction may occur during the setting and hardening of lime-based mortars and competition between them cannot be underestimated. With the aim of underpinning the revision and proposal of test methods for lime-based systems, this review paper reports a comprehensive study of the mechanisms of setting and hardening of these binders, considering the variability of the composition, which includes pure air lime as well as lime with hydraulic properties, lime-cement and lime-pozzolan systems.

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Section: Introductionmentioning

confidence: 99%

RILEM TC 277-LHS report: a review on the mechanisms of setting and hardening of lime-based binding systems

et al. 2021

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“…When applying new renders in historic constructions, physical, mechanical and chemical compatibility should be guaranteed [20][21][22][23][24]. When thermal renders (or other thermal insulation materials) are introduced in this intervention, great concern lies in the physical compatibility, from the hygric point of view [25].…”

Section: Introductionmentioning

confidence: 99%

Thermal renders for traditional and historic masonry walls: Comparative study and recommendations for hygric compatibility

Posani

Veiga

Freitas

2023

Building and Environment

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“…Air lime-based mortars have positive environmental implications as compared with cement mortars due to their lower energy consumption for production, fired at less than 900 • C, and their contribution to CO 2 balance by retaining and by carbonation when hardening the CO 2 that was emitted from production [5]. They can be used in a wide variety of mixtures depending on their function, such as renders and plasters [6], repairing ornamental pieces and surfaces of historical buildings [7], bonding glazed tiles [8] and other use cases [4,9,10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Type of Curing and Metakaolin Replacement on Air Lime Mortars for the Durability of Masonries

2021

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The interest in restoration and maintenance of old masonries towards their durability is nowadays combined with the concept of sustainability and the need to implement more suitable materials for building heritage interventions. This has led to the importance of having a better knowledge of air lime mortars, namely on the effect of pozzolanic additions, curing conditions and evolution at early stages. This study consisted in the characterization of mortars based on hydrated air lime and sand, with 1:2 (lime:sand) volumetric composition, with different weight percentages of substitution of lime by metakaolin (Mk): 0%, 10% and 20%. Mortar prisms were analyzed in three different curing environments: maritime (by the Atlantic Ocean), in laboratory humidity (95 ± 5% relative humidity, RH) and standard (65 ± 5% RH) conditioning. Tests were conducted to evaluate fresh and hardened properties of mortars, considering physical, chemical and mechanical performance at 28, 90 and 180 days. Results showed the viability of applying air lime-Mk mortars with curing conditions similar to the tested ones. In the standard curing, the mortar with 20% Mk revealed advantages in mechanical parameters. Concerning the behaviour towards water, improvements were shown at an early stage with the humid curing, while maritime curing benefited its behaviour for at least up to 6 months.

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Recommendation of RILEM TC 243-SGM: functional requirements for surface repair mortars for historic buildings

Abstract: Important note To cite this publication, please use the final published version (if applicable). Please check the document version above.

Cited by 12 publications

References 25 publications

RILEM TC 277-LHS report: a review on the mechanisms of setting and hardening of lime-based binding systems

RILEM TC 277-LHS report: a review on the mechanisms of setting and hardening of lime-based binding systems

Thermal renders for traditional and historic masonry walls: Comparative study and recommendations for hygric compatibility

Effect of Type of Curing and Metakaolin Replacement on Air Lime Mortars for the Durability of Masonries

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