Determination of durability of mortar with slag exposed to bacterial environment

0501785 - ÚGN 2019 RIV GB eng J - Journal Article
Smoláková, M. - Estoková, A. - Václavík, V. - Souček, Kamil - Zajícová, Vendula
Determination of durability of mortar with slag exposed to bacterial environment.
IOP Conference Series: Materials Science and Engineering. Roč. 385, č. 1 (2018), s. 1-7, č. článku 012052. ISSN 1757-8981.
[Conference Construmat 2018 /24./. Herlany, 13.06.2018-15.06.2018]
Institutional support: RVO:68145535
Keywords : cement based materials * porosity * building materials
OECD category: Construction engineering, Municipal and structural engineering
https://iopscience.iop.org/article/10.1088/1757-899X/385/1/012052/meta

Leaching of cement based materials and dissolution of cement hydrates under
biogenic acid attack result in an increase of the porosity and changes in the pore structure of
the building materials. The impact of certain physicochemical concrete/mortar parameters
such as cement chemistry, water/binder (w/b) ratio, porosity and fluid permeability of
cementitious materials has been recognized from a material sciences perspective. In this work
the durability of cement composite made with blast furnace slag exposed to sulphur oxidizing
bacteria A. thiooxidans during the period of 12 months was investigated. Leaching of calcium
and silicon ions, water absorbability and porosity of the slag based composite using X-ray
computed tomography was evaluated.
Permanent Link: http://hdl.handle.net/11104/0293775