Physico-Antibacterial Feature and SEM Morphology of Bio-Hydraulic Lime Mortars Incorporating Nano-Graphene Oxide and Binary Combination of Nano-Graphene Oxide with Nano Silver, Fly Ash, Zinc, and Titanium Powders

被引：6

作者：

Kirgiz, Mehmet Serkan ^{[1
]}

Mirza, Jahangir ^{[2
]}

Cuc, Stanca ^{[3
]}

Prodan, Doina ^{[3
]}

Sarosi, Codruta ^{[3
]}

Perhaita, Ioana ^{[3
]}

Carpa, Rahela ^{[4
]}

Moldovan, Marioara ^{[3
]}

Popa, Dorin ^{[5
]}

Varvara, Simona ^{[5
]}

Popa, Maria ^{[6
]}

机构：

[1] Northwestern Univ, Chicago, IL 60208 USA

[2] York Univ, Fac Civil & Environm Engn, Toronto, ON M3J 1P3, Canada

[3] Babes Bolyai Univ, Raluca Ripan Chem Res Inst, Cluj Napoca 400084, Romania

[4] Babes Bolyai Univ, Fac Biol & Geol, Dept Mol Biol & Biotechnol, Cluj Napoca 400084, Romania

[5] 1 Decembrie 1918 Univ Alba Iulia, Fac Exact Sci & Engn, Alba Iulia 510009, Romania

[6] 1 Decembrie 1918 Univ Alba Iulia, Fac Econ Sci, Alba Iulia 510009, Romania

来源：

BUILDINGS | 2023年 / 13卷 / 01期

关键词：

graphene nanopowder; hydraulic mortar; porosity; water absorption; antibacterial property; SEM morphology; MECHANICAL-PROPERTIES; ZNO NANOPARTICLE; MICROSTRUCTURE; PHOTOCATALYSIS; SUSPENSIONS; COMPOSITES;

D O I：

10.3390/buildings13010172

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The study evaluated the impact of graphene powders used as additives in the recipe of the experimental lime mortar to a mixture ratio of 1:2.5 of NHL3.5 hydraulic lime:fine sand. The content of binder, aggregate and water was kept constant, varying only the amount and the type of the added additives in relation to the amount of natural hydraulic lime NHL3.5. The following five types of experimental mortars were prepared as follows: reference mortar (without additive); mortars containing 1 wt.% GO and 5 wt.% GO powder; mortar with the following GO powders mixture: GO powder functionalized with silver nanoparticles and with fly ash (GO-Ag + GO-fly ash); mortar with the following GO powders mixture: GO with zinc oxide and with titanium oxide (GO-ZnO + GO-TiO2). The influence of the GO-based additive addition on the porosity, surface microstructure, and water sorption coefficient of the mortar samples was evaluated. The antibacterial effect of the mortar samples against three bacterial strains was also investigated. The best results were obtained for the experimental mortar containing GO-ZnO -TiO2, which showed improved experimental properties that potentially allow its use for the rehabilitation of heritage buildings.

引用

页数：11