TG-DTA and FTIR analyses of roman and later historic mortars from Drobeta-Turnu Severin region

Moşoiu, Codruţa; Vlase, Dan; Vlase, Gabriela; Lazău, Radu

doi:10.1007/s10973-019-08508-x

Cited by 5 publications

(1 citation statement)

References 14 publications

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“…Other works showed that the calcination process of the raw dolomitic limestone and the slaking process (atmospheric environment, excess of water, CO2 presence …) yielded dolomitic limes with different behavior, which gave rise to the formation of different magnesium carbonates after hardening (hydromagnesite, nesquehonite, amorphous carbonates,…) [132]. Whereas in ancient mortars the presence of dolomite was evident together with poorly crystalline phases of other magnesium carbonates, the formation of phases on repair mortars obtained from calcination of dolomitic limestone matches a different pattern [133][134][135][136][137]. The control of burning and slaking processes seems to be of paramount importance for dolomitic lime mortars [35].…”

Section: Compressive Strength Values Of Different Datasets Of Dolomit...mentioning

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: Compressive Strength Values Of Different Datasets Of Dolomit...mentioning

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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Usage of supplementary cementitious materials: advantages and limitations

Pacewska

Wilińska

2020

J Therm Anal Calorim

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It is well known that cement production is not neutral for natural environment among others due to high CO2 emission. Different strategies of mitigation of negative environmental impact of its production are developed. One of the ways is utilization of supplementary cementitious materials (SCMs) in the manufacture of cement and concrete. Introduction of aluminosilicate SCMs into binding mixture makes that more amount of so-called C–A–S–H phase appears in hydration products, affecting microstructure and properties of final hardened composite. The aim of this work is to discuss the possibilities of utilization of selected SCMs in different binding mixtures including some advantages and limitations. Literature review on the subject was carried out. Some of our own research results were also presented. In the Part I of this review, some information about history of ancient binding materials and the possibilities of inspiring modern engineers with ancient constructions in the aspect of using SCMs in modern concrete were presented. Using pozzolanic aluminosilicate SCMs in relation to their influence on formed products, microstructure and mechanical properties of hardened material were discussed. Some problems with possibilities of study of SCMs reaction degree were identified. Emphasis was put on the usefulness of isothermal calorimetry and thermal analysis for investigations of hydration process and identification of hydrated products as well as evaluation of degree of reaction of SCMs.

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Comparative analyses of Roman mortars belonging to different ancient periods from Drobeta-Turnu Severin region

Vlase

Moşoiu

Vlase

et al. 2020

J Therm Anal Calorim

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TG-DTA and FTIR analyses of roman and later historic mortars from Drobeta-Turnu Severin region

Cited by 5 publications

References 14 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

Usage of supplementary cementitious materials: advantages and limitations

Comparative analyses of Roman mortars belonging to different ancient periods from Drobeta-Turnu Severin region

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