Effect of temperature, resting time and brick dust (Horasan) on the rheological properties of hydraulic lime-based grouts

Dinç-Şengönül, Burcu; Oktay, Didem; Yüzer, Nabi

doi:10.1016/j.conbuildmat.2020.120644

Cited by 18 publications

(13 citation statements)

References 35 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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“…Generally, the fresh state properties of the mixtures were influenced by the glass additives, whereas their efficacy was maintained, according to relevant studies [14,15,24,28]. No aggregation phenomena were recorded (especially due to the fibers' addition) during or after the fresh state properties testing.…”

Section: Water Content and Fresh State Propertiesmentioning

confidence: 98%

“…In the case of building heritage, grouting is an extensively applied technique for restoring and strengthening historic masonries, as well as for consolidating architectural surfaces [25][26][27][28][29][30][31][32][33][34][35][36][37]. During the past few decades, lime-based grouts have been widely developed, following the principle of compatibility, while multiple grouting systems have been applied, according to the needs of each restoration work [28][29][30][31][32][33][34][35]. In order to enhance their properties at fresh and hardened states, various additives have been also used [14,25,28,[30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

“…During the past few decades, lime-based grouts have been widely developed, following the principle of compatibility, while multiple grouting systems have been applied, according to the needs of each restoration work [28][29][30][31][32][33][34][35]. In order to enhance their properties at fresh and hardened states, various additives have been also used [14,25,28,[30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

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The Role of Glass Additives in the Properties of Lime-Based Grouts

Pachta

2021

Heritage

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Various types of additives have been diachronically used in historic mortars, whereas their use in lime-based grouts, used for the restoration of historic structures, is rather limited. In this study, an effort was made to investigate the performance of glass additives in grouts, consisting of lime and natural pozzolan. The additives concerned glass fibers (3 and 6 mm in length), glass beads and bubbles, added in a proportion 0.3–3% w/w of binders. Five grout compositions were manufactured and their properties at fresh and hardened states were tested. From the evaluation of the results, it was asserted that glass additives influenced the grouts’ performance in a favorable way. Their fresh state and physical properties were maintained or slightly improved, while there was a significant enhancement of the long-term mechanical characteristics of the mixes. Additionally, the adhesion capability of grouts was notably increased, which is a crucial aspect indicating their efficacy.

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“…Lime-based grouts have been extensively used for the restoration of heritage structures, both concerning the strengthening of historic masonries and the consolidation of architectural surfaces [1][2][3][4][5][6][7][8][9][10]. Their type, constituents and properties are usually defined by the characteristics of each case, as well as the restoration requirements.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Water Content on the Fresh and Hardened State Properties of Lime–Pozzolan Grouts

Pachta

2022

Heritage

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Lime–pozzolan grouts concern a specific type often applied in the restoration of historic structures. Their water content, a crucial factor of their applicability, has a significant impact on their fresh and hardened state properties. In this study, four grout compositions were manufactured and tested, consisting of hydrated lime and natural pozzolan in a mass proportion 1:1. Their fresh properties were recorded, including fluidity, penetrability, volume stability, viscosity and shear stress, as well as the hardened ones (shrinkage deformations, physical and mechanical characteristics). Results show that water content reduction led to an increase in flow and penetration time, as well as a significant decrease of volume changes. Mechanical properties were significantly enhanced. Generally, the water content played a fundamental role in the behavior of the mixtures, also defining the type and range of their application.

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Effect of temperature, resting time and brick dust (Horasan) on the rheological properties of hydraulic lime-based grouts

Cited by 18 publications

References 35 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

The Role of Glass Additives in the Properties of Lime-Based Grouts

The Influence of Water Content on the Fresh and Hardened State Properties of Lime–Pozzolan Grouts

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