Properties of mortars based on β-belite-metakaolinite-hydrated lime binder system

Koutník, Petr; Soukup, Aleš; Bezucha, Petr; Kohout, Jan

doi:10.1016/j.conbuildmat.2020.119123

Cited by 3 publications

(2 citation statements)

References 46 publications

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“…Moreover, the materials vary in their composition, which is why there are uncertainties related to the environmental conditions to which they are exposed (Ball et al, 2011;Koutník et al, 2020). Thus, restoration mortars must be selected from the study of the ancient materials and their decay, as well as from the environmental factors affecting the structure (Apostolopoulou et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Compressive Strength of Lime Mortars with Admixtures, Subjected to Two Curing Environments

Morales

Castellanos

2021

Ing. Inv.

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This article presents the assessment of the compressive strength of three types of lime mortar, one without admixture and the remaining two added with metakaolin and brick dust. The chemical composition of the lime and the pozzolans was evaluated using the X-ray fluorescence (XRF) technique. The mortars were subjected to two curing conditions: humidity and temperature-controlled chamber, and accelerated carbonation chamber, then they were tested at ages of 7, 28, 60 and 90 days. The results showed that the samples cured in the carbonation chamber presented higher compressive strength values than the ones cured in the humidity and temperature-controlled chamber, due to the fact that lime mortars increase their strength with the carbonation of the calcium hydroxide that exists in the lime. Likewise, when adding metakaolin to the lime mortars cured in the humidity and temperature-controlled chamber, the values of compressive strength were close to those of the mortars with lime only, that were cured in the carbonation chamber. From the results of the research, it is notable that the use of pozzolans in lime mortars improves the short-term compressive strength, which is attractive for the rehabilitation of heritage buildings since in short periods of time it manages to match the strengths that lime mortars acquire over time.

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Section: Introductionmentioning

confidence: 99%

Assessment of the Compressive Strength of Lime Mortars with Admixtures, Subjected to Two Curing Environments

Morales

Castellanos

2021

Ing. Inv.

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“…Inorganic substances, such as metakaolin [33][34][35][36], volcanic ash [37,38] and brick dust [35], because of their pozzolanic activity, can be, as well, used to improve the mechanical strength of cement-based and natural mortars. They can also diminish the shrinkage of the paste and mortar [33,35] and improve durability by reducing the liquid water transport [39].…”

Section: Introductionmentioning

confidence: 99%

Influence of Linseed Oil Varnish Admixture on Glauconite Clay Mortar Properties

Brzyski

Grudzińska

2020

Materials

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Raw clay is used nowadays in construction as a component of mortars and plasters and as a binder in composites based on straw or shives. It is a material with good sorption properties and vapor permeability, but it is susceptible to shrinkage, is not resistant to water, and also is characterized by low mechanical strength, which makes it impossible to be used, for example, in external plasters. Various additives and admixtures are used to improve selected properties of clay mortars. The article presents the research results and assessment of the effect of glauconite clay mortar modification with an admixture of linseed oil varnish on selected properties. Admixtures in the amounts of 1%, 2%, and 3% in relation to clay weight were used. Flexural and compressive strength, water resistance, shrinkage, drying capacity, density, and porosity of mortar, were tested. The admixture of linseed oil varnish in the amounts used in the investigation had a positive effect on some of the tested properties; regardless of the quantity of the admixture, the modified mortars had better parameters concerning flexural strength, shrinkage reduction, and water resistance than the reference mortar, without admixture.

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Influence of Adding Jordanian Scoria on the Properties of Clay-based Geopolymer

Al-Slaty,

Ibrahim,

Fayez

et al. 2023

Earth sci. res. j.

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This work aims to investigate the influence of adding Jordanian scoria on the characteristics of clay-based geopolymer. The clay deposit and scoria were gotten from north-east Jordan. The chemical, mineralogical, and microstructural properties of the used materials were examined. Scoria was added to clay-based geopolymer mixtures in different ratios: 0%, 10%, 20%, 30%, 40%, and 50%. Comprehensive experimental tests were conducted to assess the effect of adding scoria on the properties of the produced geopolymer. The results revealed decreased compressive strength and dry density, whereas porosity, water absorption, cation exchange capacity, and specific surface area increased as the ratio of scoria increased. The mineralogical and microstructural analysis of the geopolymers after adding scoria indicates the formation of mineral phases, namely hydroxy-sodalite and hydroxy-cancrinite in addition to the gel phase.

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Properties of mortars based on β-belite-metakaolinite-hydrated lime binder system

Cited by 3 publications

References 46 publications

Assessment of the Compressive Strength of Lime Mortars with Admixtures, Subjected to Two Curing Environments

Assessment of the Compressive Strength of Lime Mortars with Admixtures, Subjected to Two Curing Environments

Influence of Linseed Oil Varnish Admixture on Glauconite Clay Mortar Properties

Influence of Adding Jordanian Scoria on the Properties of Clay-based Geopolymer

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