Improving lime-based rendering mortars with admixtures

González-Sánchez, J.F.; Fernández, José María Fernández; Navarro-Blasco, Í.; Álvarez, J.I.

doi:10.1016/j.conbuildmat.2020.121887

Cited by 22 publications

(7 citation statements)

References 54 publications

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“…These mortars are thus well applicable in damp masonry, where they will enable the drying of contained moisture and improve the hygric performance of the treated structure. Similar high water vapor permeability of lime and hydraulic lime-based mortars has been reported, e.g., Silva et al [55], González-Sánches et al [56], Barnat-Hunek et al [57], and Torres et al [58]. On the contrary, the lime-cement mortars yielded µ values higher than required for repair mortars.…”

Section: Hygric Propertiessupporting

confidence: 75%

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

et al. 2021

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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.

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Section: Hygric Propertiessupporting

confidence: 75%

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

et al. 2021

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“…Severe sulfate damage can be also observed in the case of metakaolin-air lime mortars: the presence of aluminum-containing phases is detrimental for the endurance against sulfate attack as they promote the formation of expansive compounds [114]. If Mg 2?…”

Section: Weak Trass-lime Repointing Mortarsmentioning

confidence: 99%

RILEM TC 277-LHS report: lime-based mortars for restoration–a review on long-term durability aspects and experience from practice

et al. 2022

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For conservation interventions of historic masonry generally lime-based mortars such as pure air lime mortars, lime-pozzolan mortars, natural hydraulic lime mortars and ternary mortars (lime-pozzolan-cement) are used. The main reason is that their hygric and mechanical (strength and ductility) performance are easy to adapt to most existing historic masonry (compatibility requirements). Although the basic appropriateness of lime-based mortars for restoration is undisputed, there are also some limitations in the application of these mortars. In this report a review is given of the theoretical backgrounds and further of laboratory research developments in the field of lime-based binders and mortars over the past decades. Furthermore, practical experiences in positive and negative sense (damage cases) are elaborated. Drawbacks and points of attention are being dealt with, which are essential for a durable application of lime-based mortars for the conservation of historic masonry. In general, it is concluded that points of attention should be addressed through a thorough evaluation of their potential and through testing of their suitability. For these mortars, even more than for modern cement-based mortars, specifically, environmental exposure conditions and application conditions should be considered.

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“…Basada en investigaciones anteriores encontradas en el estado del arte (Durán Suárez & García Casco, 2017, Garcia Cucalon et al, 2017, González-Sánchez et al, 2021 esta investigación en edificios históricos contribuirá, así mismo, a que el sector de la construcción sea más sostenible aportando información sobre como los materiales sostenibles han sido capaces de permanecer en contextos cambiantes.…”

Section: Proyectos De Rehabilitación Del Patrimoniounclassified

Nuevos materiales a partir de residuos industriales: aplicaciones en la conservación y gestión del patrimonio

2023

Proceedings From the International Congress on Project Management and Engineering

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The purpose of the communication is to present successful evidences about the use of new sustainable materials created from industrial and construction waste in the field of heritage. The usefulness of these materials has been proven in several aspects. On the one hand, they can be used in rehabilitation and conservation. Pieces have been manufactured with mechanical and aesthetic characteristics similar to the original ones damaged due to the passage of time. On the other hand, its usefulness has been seen in the dissemination of heritage and art to the general public, in the training and awareness of new generations and facilitating access to historical heritage to groups with disabilities that currently do not find it easy to do so. The development of these materials also contributes to the deployment of global strategies of circular economy and sustainable development.

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Improving lime-based rendering mortars with admixtures

Cited by 22 publications

References 54 publications

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

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

RILEM TC 277-LHS report: lime-based mortars for restoration–a review on long-term durability aspects and experience from practice

Nuevos materiales a partir de residuos industriales: aplicaciones en la conservación y gestión del patrimonio

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