Performance improvement of local Korean natural hydraulic lime-based mortar using inorganic by-products

Cho, Jin-Sang; Moon, Ki-Yeon; Choi, Moon-Kwan; Cho, Kye-Hong; Ahn, Ji-Whan; Yeon, Kyu-Seok

doi:10.1007/s11814-017-0019-z

Cited by 15 publications

(2 citation statements)

References 14 publications

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“…Traditional mortars have in their composition traces varying from 1:1:6 to 1:2:9 (cement: hydrated lime: sand), indicating that the amount of lime used is equal or higher (up to two times) than the amount of cement [4][5][6]. A major economic issue is that the hydrated lime has a commercial price similar to cement [7].…”

Section: Introductionmentioning

confidence: 99%

Study on the replacement of the hydrated lime by kaolinitic clay in mortars

Marvila

Alexandre

Azevedo

et al. 2019

Advances in Applied Ceramics

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Mortars are cement-based materials used mainly to coat and settle construction blocks. In addition to cement, their composition usually includes hydrated lime, sand, and water. The hydrated lime is important to improve the mortar workability. However, lime has a high commercial cost, and its production causes emission of CO 2 , a major responsible for global warming. Therefore, the purpose of this work was to investigate the possibility of total or partial replacement of hydrated lime in mortars by a kaolinitic clay with ideal plasticity parameters. Clay amounts of 0, 25, 50, 75, and 100 wt-% were used as replacement of hydrated lime in mortars. The results showed that with up to 50 wt-% of hydrated lime replacement, it is perfectly feasible to fulfil with technological parameters of standards.

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Section: Introductionmentioning

confidence: 99%

Study on the replacement of the hydrated lime by kaolinitic clay in mortars

Marvila

Alexandre

Azevedo

et al. 2019

Advances in Applied Ceramics

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“…Both ornamental rock waste and hydrated lime have grains of similar texture in terms of particle size and pore size. Although the shape of its grains is a little different, the lime presents rounder and more homogeneous particles while the waste elongated and irregular grains due to the industrial processing [3,47]. Furthermore, the ornamental rock waste presented a rough surface in many of its particles, as also observed by Lozano-Lunar et al [48].…”

Section: Chemical and Microstructural Characterizationmentioning

confidence: 61%

Feasibility Analysis of Mortar Development with Ornamental Rock Waste for Coating Application by Mechanized Projection

Paes¹,

Alexandre²,

Xavier³

et al. 2022

Sustainability

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The industrial production of lime generates greenhouse gases, which contributes to increase the global warming. Therefore, the present study evaluated the feasibility of replacing lime by ornamental rock waste (ORW) as a by-product of the related stone industry, and developed a cost-effective mortars. These new low-costing mortars are intended as fresh fluid paste coatings to be applied on walls by the mechanized projection technique. The ornamental rock waste was collected from a marble and granite industry as ground stone. It was finely crushed before mixing with cement, sand, water and superplasticizer in amounts of 1.0% (R01), 1.2% (R02) and 1.3% (R03), to prepare the mortars, which had the mixture, cement: ORW: sand, 1:1:4 in wt.%. These novel mortars were characterized in both fresh, for well projection, and hardened state, to evaluate the properties after curing performance. The results showed that mortar R03, achieved the best results and did not present cracks in the hardened state. Its water retention was found above 30%. Both tensile strength of 0.312 MPa and compressive strength 7.88 MPa, which are above the corresponding minimum required by the standard for external coating. Water absorption by immersion of 19.37% and void content of 20.23% were close to the corresponding values for hydrated lime mortar. Dry shrinkage showed that the new R03 mortar reached more than 90% of their total retraction at 7 days of cure without sign of cracking. These findings revealed the R03/ornamental rock waste -based mortar applied by mechanized projection as a promising sustainable substitute for common lime-based mortar.

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