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Title: SALTS ACCUMULATION EFFECT ON DURABILITY OF NON-HYDROPHOBISED RENOVATION PLASTERS
SALTS ACCUMULATION EFFECT ON DURABILITY OF NON-HYDROPHOBISED RENOVATION PLASTERS

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Milena Pavlikova; Zbysek Pavlik
10.5593/sgem2023/6.1/s26.40
10.5593/sgem2023/6.1
1314-2704
978-619-7603-61-3
English
23
6.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Green Buildings Technologies and Materials
This paper focuses on the experimental testing of hydrated lime-, natural hydraulic lime-, and lime-cement-based mortars with improved salt accumulation capacity. Moreover, the effect of varying content of non-hydrophobised expanded perlite (EP) in the mortars on their durability was investigated. The substation of silica sand by expanded perlite was 25%, 50%, 75% and 100% by volume. A modified method based on the adsorption of free salt ions from solution was used to measure the chloride binding isotherms. The salt concentration was analyzed using an apparatus working on liquid chromatography technique. The data acquired were compared with reference mortars with natural silica sand as an only aggregate. The use of expanded perlite significantly increased the chloride binding capacity of the tested mortars, while no deterioration was observed for samples contaminated with salts. The results obtained thus validated the applicability of most of the mortars tested for the repair of masonry structures including the restoration of renders and plasters. When repairing historic masonry, compatibility issues must be considered, in this case with respect to the type of binder used.
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This research has been financially supported by the Czech Science Foundation under the project No 21-06582S. The authors gratefully acknowledge the financial support received from the Ministry of Education, Youth and Sports, OP VVV projects No. CZ.02.2.67/0.0/0.0/16_016/0002526 and CZ.02.1.01/0.0/0.0/16_017/0002623.
conference
https://doi.org/10.5593/sgem2023/6.1/s26.40
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Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 03 - 09 July, 2023
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
321-328
03 - 09 July, 2023
website
9252
lightweight mortars, non-hydrophobised expanded perlite, durability, ion liquid chromatography, salt accumulation