diplomsko delo
Tanja Buh (Author), Romana Cerc Korošec (Mentor)

Abstract

Samopopravljivi betoni so betoni, ki vsebujejo samopopravljivo komponento, ki služi kot takojšnje sredstvo za popravilo poškodb na betonskih konstrukcijah. Osredotočila sem se na proces biomineralizacije in nastanek kalcijevega karbonata kot metode, s katero se podaljšuje trajnost in trdnost zgrajenih objektov. Potem ko v betonu nastanejo manjše razpoke, delovanje bakterij, ki so v beton predhodne vmešane, omogoči nastanek oborine, ki razpoko ponovno zapolni. Pripravila sem vzorec z vsebovanimi bakterijami in ga opazovala 28 dni v vodi, kjer sem spremljala nastanek in rast oborine kalcijevega karbonata. Opisni in vizualni oceni uspešnosti procesa sem dodala še spremljanje in slikanje pod optičnim in vrstičnim elektronskim mikroskopom. Postopek se je izkazal za uspešnega, oborina kalcijevega karbonata je nastala in pričakovano zapolnila razpoke v vzorcih.

Keywords

materiali;samopopravljivi beton;samoceljenje;biomineralizacija;kalcijev karbonat;karakterizacija;mikroskopija;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [T. Buh]
UDC: 620.1:666.97(043.2)
COBISS: 1538303939 Link will open in a new window
Views: 802
Downloads: 202
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Other data

Secondary language: English
Secondary title: Self-Healing Concrete
Secondary abstract: Self-healing concrete is a concrete that contains a self-healing component which behaves as an immediate agent for repairing injuries on constructions made of concrete. I focused on the process of biomineralization and the formation of calcium carbonate as the method which prolongs the durability and firmness of structures. After minor cracks are formed in the concrete, the action of bacteria previously mixed into the concrete allows the formation of a precipitate that fills the crack again. A sample that contained the bacteria was prepared, immersed into water and observed for 28 days. The appearance and growth of calcium carbonate precipitation was followed during this period. The process was descriptively and visually evaluated and images were taken with an optical as well as scanning electron microscope. The process was successful; calcium carbonate precipitation appeared and filled the cracks of the samples, as expected.
Secondary keywords: self-healing concrete;self-healing;biomineralization;calcium carbonate;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000374
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, VSŠ Kemijska tehnologija
Pages: 40 str.
ID: 11214248