Performance of Fiber-Cement Boards in Biogenic Sulphate Environment

Adriana Eštoková; Vlasta Ondrejka Harbulakova; Alena Luptáková; Nadežda Števulová

doi:10.4028/www.scientific.net/AMR.897.41

Paper Titles

Thermoanalytical Study of Binders Containing Pozzolanic and Latent Hydraulic Materials
p.21

Reduction of CO₂ Emissions at Firing of Binders Type Portland Cement
p.25

Sodium Hexametaphosphate as Deflocculation Agent for Calcium Aluminate Cements in Porcelain Body
p.30

Influence of Different Grinding Types on Granulometry of Cement Grains
p.34

Performance of Fiber-Cement Boards in Biogenic Sulphate Environment
p.41

Decorative Multi-Component Alkali Activated Cements for Restoration and Finishing Works
p.45

Testing of Clay Used for Building a Folk House Replica by Traditional Techniques
p.49

Industrial Resources for the Production of Sulphate Binders
p.53

Efficiency of Sulphate Paste Liquefaction
p.57

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 897Performance of Fiber-Cement Boards in Biogenic...

Performance of Fiber-Cement Boards in Biogenic Sulphate Environment

Abstract:

The paper presents the results of the study of selected fiber-cement boards parameters influenced by sulphur-oxidising (Acidithiobacillus thiooxidans) and sulphur-reducing bacteria (Desulfovibrio desulfuricans) attack. The experiments proceeded during 80 days under laboratory model conditions. The surface changes, chemical composition and pH of leachates as well as weight changes were investigated. The more extensive leaching of silicon and calcium ions from the cement matrix was confirmed under bacteria influence. The pH of liquid media has been settled to 7 and 9 for Acidithiobacillus thiooxidans and Desulfovibrio desulfuricans, respectively after initial increasing. Very small decrease in weight of samples in range 0.001 - 0.93 % was measured after the experiments.

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Periodical:

Advanced Materials Research (Volume 897)

Pages:

41-44

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.897.41

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Online since:

February 2014

Authors:

Adriana Eštoková*, Vlasta Ondrejka Harbulakova, Alena Luptáková, Nadežda Števulová

Keywords:

Bio-Corrosion, Building Material, Sulphate-Reducing Bacteria, Sulphur-Oxidising Bacteria

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