Development of New Mosaic Tesserae for Artists and Conservators-Restorers

LONCAR poster 1Authors: Urška Lončar and Monika Zobec
Mentors: Blaž Šeme, PhD, Assistant Professor; Gregor Kokalj, MA, Assistant Professor

Department of Conservation and Restoration of Works of Art, Academy of Fine Arts and Design, University of Ljubljana (Slovenia)
Study programme: First-Cycle Bachelor's Programme of Study in Conservation and Restoration of Works of Art
Specialization: – (? year of study)


Students of the  Academy of Fine Arts and Design and the Faculty of Civil and Geodetic Engineering in Ljubljana, in collaboration with experts from different fields, are working on a new kind of mosaic cubes made of inorganic and organic compounds. The idea of the project originates from the need for high-quality and affordable mosaic tesserae, which art students can make by themselves and which can be suitable for use in the  wider area  of artistic creation, including copying, at the same time meeting  the needs of  mosaic conservation-restoration. For the purpose of the project, two groups of students tested two different basic binders: a ceramic-based mineral binder (Kremenit) and an epoxy-resin-based synthetic organic binder. After the addition of various pigments and additives, and the manufacture of moulds for test samples, two types of tests were performed: workability tests on the materials in the studio (consistency, setting time, shrinkage, cutting and adherence) and tests of the physical properties of the tesserae in the scientific laboratory (compressive, bending and splitting strength tests and frost resistance tests). The results of the project are mosaic tesserae that can be used for outdoor and indoor purposes. The research will hopefully continue as planned.

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Short biographies

URŠKA LONČAR, born in February 1995, at Celje, attended Petrovče elementary school and then High School for Horticulture and Visual Arts at Celje, where she graduated in 2014 as a golden graduate. After finishing high school she enrolled into the Faculty of Natural Sciences and Engineering in Ljubljana, where she studied fashion and textile design for two semesters. Then she enrolled ito the Academy of Fine Arts and Design in Ljubljana, where she is in her fourth semester of Conservation and Restoration of Works of Art Course.

MONIKA ZOBEC was born in 1996 in Ljubljana, Slovenia. She attended primary school in Ribnica and then Secondary School of Design and Photography in Ljubljana, taking her degree in 2015. Now she studies at the Academy of Fine Arts and Design in Ljubljana. She is in her fourth semester of Conservation and Restoration of Works of Art Course.