Effect of curing conditions on the properties of lime, lime–metakaolin and lime–zeolite mortars

Pavlı́k, V.; Uzakova, M.

doi:10.1016/j.conbuildmat.2015.10.128

Cited by 85 publications

(44 citation statements)

References 50 publications

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“…Based on a literature review [6,7,30,32,33], specimens are demolded after 24 hours of preparation and are placed in a damp environment for seven days. After that, specimens are stored in the lab environmental conditions (20°C, 60% RH) until the test day (for 60 days of mortar curing).…”

Section: Bond Characterization Testsmentioning

confidence: 99%

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Effect of test setup on the fiber-to-mortar pull-out response in TRM composites: Experimental and analytical modeling

Dalalbashi

Ghiassi

Oliveira

et al. 2018

Composites Part B: Engineering

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Textile-reinforced mortars (TRM) have recently received significant attention for the externally bonded reinforcement (EBR) of masonry and historical structures. The fiber-tomortar bond, the TRM-to-masonry bond, and the mechanical properties of the TRM constituents have a fundamental role in the performance of this strengthening technique and therefore require special attention. Despite this importance, only few investigations are devoted to characterization of the single fiber-to-mortar bond response in these systems. This paper, as an step towards addressing the fiber-to-mortar bond, presents a combined experimental and analytical investigation on the effect of test setup on the pull-out response and bond-slip laws in TRM composites. Three different pull-out test setups, consisting of one pull-pull and two pull-push configurations, are developed and investigated for characterization of the single fiber-to-mortar bond behavior. The experimental and analytical results are critically discussed and presented and bond-slip laws are extracted for each test setup.

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Section: Bond Characterization Testsmentioning

confidence: 99%

“…As for the matrix, cementitious or lime-based mortars are usually used. Lime-based mortars are preferred for application to masonry and historical structures due to their compatibility, sustainability, breathability and capability to accommodate structural movements [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effect of test setup on the fiber-to-mortar pull-out response in TRM composites: Experimental and analytical modeling

Dalalbashi

Ghiassi

Oliveira

et al. 2018

Composites Part B: Engineering

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“…Lanas et al [43] investigated mechanical properties of aerial and hydraulic lime-based mortars cured in different environmental conditions and concluded that mechanical properties and durability at different environments were related to the porous structure of mortar. Pavlik and Uzakova [29] tested the humidity effect on shrinkage and compressive strength of aerial lime mortars with the addition of zeolite and metakaolin. It was shown that the mortars with aerial lime and pozzolans had better mechanical properties than aerial lime itself, regardless of humidity.…”

Section: Introductionmentioning

confidence: 99%

“…Garijo et al [28] studied five factors, which had an influence on natural hydraulic lime mortars' properties, in particular the water binder ratio, the mold material, the aggregate size, and type and curing conditions. The influence of different humidity conditions of curing was tested by Pavlík and Uzáková [29] in their study of the influence of zeolite and metakaolin addition on the compressive strength, porosity, shrinkage, and frost resistance of lime mortars. It was found that pozzolans reduced shrinkage of freshly hydrated lime mortars.…”

mentioning

confidence: 99%

Assessment of the Impact of Inaccuracy and Variability of Material and Selected Technological Factors on Physical and Mechanical Properties of Fresh Masonry Mortars and Plasters

et al. 2020

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The article presented the analysis of the impact that various kinds of technological inaccuracies have on the properties of fresh masonry mortars and plasters. Analyzed were the inaccuracies in dosing of mortar components, namely, water, lime, and air-entraining plasticizing admixture (APA) (±10% of mass), and the effect of variable technological conditions, namely, different mixing intensity (fast, slow, normal) and temperature (5 • C, 20 • C, and 35 • C) during first 72 h after mixing. The impact of differences in the properties of cement and aerial (hydrated) lime originating from different manufacturers was also analyzed. The impact of these factors was determined for consistency, density, air content, compressive, and flexural strength. The sensitivity to changes in the analyzed properties was determined by the coefficient of variation. Changes in the dosing of constituents, mixing speed, and temperature adversely affected strength properties. For mortars with APA, these changes exceeded 20% and reached 40%. The greatest impact was evident in the consistency, especially with an excess of APA, where changes ranged from 6% to 80%. The results showed greater resistance of cement-lime mortars to changing selected technological conditions and errors in measuring the amount of ingredients than mortars with air-entraining plasticizing admixture (APA). Materials 2020, 13, 1382 2 of 29 using waste materials, e.g., concrete waste [5], glass waste [6], brick flour [7], granite flour [8], marble powder [9], and others. A significant part of the research is devoted to modifying mortars with various additives to improve their properties while partially replacing fillers and binders with waste materials.For example, Harbi et al.[10] carried out the experimental work focused on the study of the possibility of using kaolin dust as filler in the sand, combined with additions of glass powder, brick waste, and metakaolin in order to improve the mechanical performance of the mortar. Mixtures containing glass powder and/or metakaolin turned out to be better than those containing brick waste. Similar research was carried out by Boukour and Benmalek [11], who analyzed the effect of two wastes: crushed clay brick and tire rubber aggregate in cement mortar reinforced by a resinous latex. Test results indicated a decrease in water absorption and shrinkage of such cement mortar.Atypical addition to mortar, which has been a subject of research, is recycled polyethylene terephthalate (PET) bottles [12]. Test results of this experiment have indicated that higher compressive and flexural strength can be obtained for thusly modified cement mortars. Other atypical additions to the mortar that have been researched are organic agents as vinegar, gram pulse, and frog contaminated water and their influence on mechanical properties and mortar's performance [13]. It has been concluded that organic materials chosen for the study adversely affect the compressive strength of cement mortars, especially after six months.Research has also been carried o...

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“…Para resolver essa descontinuidade de conhecimento, têm vindo a ser realizados, nas últimas quatro décadas, estudos científicos sobre a cal e as argamassas de cal, partindo da análise de argamassas antigas VELOSA et al, 2007;SILVA et al, 2011;PAPAYIANNI;STEFANIDOU, 2007) e do estudo de tratados antigos e prosseguindo com a investigação sobre novas argamassas de cal e a sua evolução no tempo. Foram estudadas profundamente a qualidade e as proporções dos materiais constituintes (CAZALLA et al, 2002;ALVAREZ, 2003;PERONI et al, 1981;VEIGA et al, 2010) e as condições ambientais a garantir ALVAREZ, 2006;PAVLÍK;UŽÁKOVÁ, 2016). Também a evolução da carbonatação e da estrutura porosa foi analisada (CIZER et al, 2012;ARANDIGOYEN et al, 2006;ARIZZI et al, 2011), assim como a influência dos modos de execução e de aplicação (CAVACO;GOMES, 2003;MARGALHA et al, 2011;BALKSTEN;KALSÉN, 2005;ROSELL et al, 2014) e das condições de produção da cal (CAZALLA et al, 2002;MARGALHA et al, 2013a;RODRIGUEZ-NAVARRO;HANSEN, 1998;HANSEN et al, 2000).…”

Section: Introductionunclassified

Argamassas de cal para conservação e reabilitação de edifícios: conhecimento consolidado e necessidades de investigação

Veiga

2018

Ambient. constr.

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Resumo As argamassas de cal foram usadas na construção desde tempos imemoriais até pelo menos ao início do século XX. Em muitas regiões do mundo mantiveram um papel importante nos edifícios até à década de cinquenta do século passado. Este material pode, como talvez nenhum outro, contar a história da construção. Com o surgimento e rápida generalização do uso do cimento, começou a perder-se o conhecimento tradicional das técnicas da cal, que era transmitido diretamente através das gerações. Para recuperar esse conhecimento têm vindo a ser realizados numerosos estudos científicos, envolvendo a análise de argamassas antigas, o estudo de tratados antigos e a investigação sobre novas argamassas de cal. Apesar destes esforços, e das evidências de que as argamassas de cal são as mais adequadas para a conservação de edifícios antigos, continua a ser pouco frequente a sua utilização nas intervenções de conservação.O que falta saber para possibilitar a sua utilização generalizada? Quais as necessidades de investigação e de ação?

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Effect of curing conditions on the properties of lime, lime–metakaolin and lime–zeolite mortars

Cited by 85 publications

References 50 publications

Effect of test setup on the fiber-to-mortar pull-out response in TRM composites: Experimental and analytical modeling

Effect of test setup on the fiber-to-mortar pull-out response in TRM composites: Experimental and analytical modeling

Assessment of the Impact of Inaccuracy and Variability of Material and Selected Technological Factors on Physical and Mechanical Properties of Fresh Masonry Mortars and Plasters

Argamassas de cal para conservação e reabilitação de edifícios: conhecimento consolidado e necessidades de investigação

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