Performance Evaluation of Lime-Based Grout Used for Consolidation of Brick Masonry Walls

Gökyiğit-Arpaci, Enise Yasemin; Oktay, Didem; Yüzer, Nabi; Ulukaya, Serhan; Ekşi-Akbulut, Dilek

doi:10.1061/(asce)mt.1943-5533.0002692

Cited by 8 publications

(7 citation statements)

References 26 publications

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“…This fact seems to be of the utmost importance for the two superplasticizers whose action mechanism is mainly based on electrostatic repulsions (PNS and SMFC). The dosage of 1% (O-SMFC1 and O-PNS1) showed very similar values to those published by other authors (which were between 0.016 and 0.038 s −1 ) [1,6,12,44].…”

Section: Injectabilitysupporting

confidence: 87%

“…Grouts, including PCE as superplasticizer, exhibited the highest injectability values in all cases. The O-MK-PCE grout showed the best injectability, 0.08 s −1 , which is larger than results reported by other authors [1,6,12,44].…”

Section: Injectabilitycontrasting

confidence: 62%

“…Water/binder ratio, the type and percentage of superplasticizer, the mixing procedure, grain size, pore size, total porosity and water absorption capacity of the filling material can be mentioned among the parameters influencing the quality of a grout injection [1,6,13,15].…”

Section: Injectabilitymentioning

confidence: 99%

“…With the aim of providing a reliable model of injectability, the use of just stable filling materials was selected rather than using filling material combinations. Furthermore, we did ascertain that filling particles had the same size distribution and their water absorption capacities were also the same to each other, avoiding variability due to the moisture content of the particles [1,56].…”

Section: Injectabilitymentioning

confidence: 99%

“…One of the most widely used methods addressed to repair different masonry defects and cavities in the preservation of the Built Heritage is the injection of grouts [1][2][3]. Grouts, fluid mixtures made of water, binder and additives, must properly flow-under an appropriate pressure-into a masonry wall in a fresh state [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Combination of Polymeric Superplasticizers, Water Repellents and Pozzolanic Agents to Improve Air Lime-Based Grouts for Historic Masonry Repair

et al. 2020

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This paper presents the experimental procedure to develop air lime-based injection grouts, including polymeric superplasticizers, a water repellent agent and pozzolanic agents as additives. Our research focuses on the development of grouts to improve various characteristics simultaneously by combining different additions and admixtures. Aiming to improve the injectability of the grouts, in this study, different polymeric superplasticizers were added, namely polycarboxylated-ether derivative (PCE), polynaphthalene sulfonate (PNS) and condensate of melamine-formaldehyde sulfonate (SMFC). As a water-repellent agent, sodium oleate was used to reduce the water absorption. The enhancement of the strength and setting time was intended by using microsilica and metakaolin as pozzolanic mineral additions. Compatibility between the different admixtures and action mechanism of the different polymers were studied by means of zeta potential and adsorption isotherms measurements. Diverse grout mixtures were produced and investigated by assessing their injectability, fluidity, stability, compressive strength, hydrophobicity and durability. This research led to several suitable mixtures produced by using more than one component, to enhance efficiency and to provide better performance of grouts. According to the results, the grout composed of air lime, metakaolin, sodium oleate and PCE was found to be the most effective composition, improving the mechanical strength, injectability and hydrophobicity.

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Section: Injectabilitysupporting

confidence: 87%