20.500.12556/RUL-120993 Effect of ultralight filler on the properties of hydrated lime injection grout for the consolidation of detached historic decorative plasters Injection-grout density is an important parameter when its additional weight leads to consolidated decorative plasters becoming damaged. This is especially evident in larger detached areas. In this study, thin-walled soda–lime–borosilicate glass microspheres were used as a density-reducing constituent in hydrated lime grout mixtures. The normal density grout composition—one volume part hydrated lime and three volume parts inert limestone filler with 0.5% of the polycarboxylate ether-based superplasticiser—was modified with partial substitution of the limestone filler with lightweight glass microspheres. The following volumetric proportions between limestone filler and glass microspheres were used: 100%:0%, 67%:33%, 50%:50%, 33%:67%, and 0%:100%. With the increase of the glass microspheres’ volume, the density of the grout is gradually reduced. Furthermore, there is a decrease in the stability and injectability of fresh grout. In its hardened state, the grout’s strength again reduces gradually, but there is no significant change in the grout’s water absorption and water-vapour resistance. The resistance of the grout to freezing–thawing and heating–cooling cycles using distilled water or salt solution is highly improved when the microspheres are present. detached decorative plasters injection grout glass microspheres reduced density stability strength durability odstopljeni dekorativni ometi injekcijska mešanica steklene mikrosfere zmanjšana gostota stabilnost trdnost obstojnost true false true Angleški jezik Slovenski jezik Članek v reviji 2020-09-28 14:04:01 2020-09-28 14:04:04 2022-09-01 04:01:03 0000-00-00 00:00:00 2020 0 0 19 str. iss. 15, art. 3360 Vol. 13 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.1(045) 1996-1944 10.3390/ma13153360 24005379 33588485 RAZ_Padovnik_Andreja_2020.pdf RAZ_Padovnik_Andreja_2020.pdf 1 CC76EE7F28D0EA294E0082DD787984FD 9540de52d56db788939aab9893a337cc2b7f316b0ada812ebbef1250ad70d50a 6021e389-5da4-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152143 https://www.mdpi.com/1996-1944/13/15/3360 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=135835 Fakulteta za gradbeništvo in geodezijo 0 0 0