6533b7dbfe1ef96bd126f797

RESEARCH PRODUCT

Antifouling Mortars for Underwater Restoration

Michela RiccaSilvestro Antonio RuffoloMauro Francesco La RussaConcetta RispoliCelestino GrifaAranzazu Sierra-fernándezRafael FortLuciana Randazzo

subject

restorationgeomaterialsbiofouling geomaterials magnesium hydroxide mortars nanoparticles restoration submerged sitesGeneral Chemical Engineeringbiofoulingsubmerged sitesPetrologíananoparticlesGeneral Materials Sciencemortarsmagnesium hydroxide; mortars; submerged sites; biofouling; geomaterials; restoration; nanoparticlesSettore GEO/09 -Georis. Miner.e Appl.Mineral.-Petrogr. per l'Ambi.ed i B.Cult.magnesium hydroxide

description

This research has focused on the assessment of the compositional features and mechanical and antifouling performances of two different mortars formulated for an underwater setting, and which contain Mg(OH)2 as an antifouling agent. Regarding the mechanical characterization, the uniaxial compressive strength and flexural strength were measured. The composition of the materials was explored by differential thermal/thermogravimetric analysis (DTA-TG), X-ray diffraction analysis (XRPD), and scanning electronic microscopy (SEM) coupled with EDS microanalysis. The assessment of the biological colonization was evaluated with colorimetric analysis and image analysis. The results suggest that both mortars have good mechanical resistance once set underwater. Moreover, the adding of Mg(OH)2 improves the resistance toward biofouling; this was observed both in laboratory and sea-exposed specimens.

yearjournalcountryeditionlanguage
2022-04-28Nanomaterials
https://doi.org/10.3390/nano12091498