[Microflora of damaged ferroconcrete structures under the conditions of inhibitory protection].
Thionic, sulphate-reducing, denitrifying and ammonifying bacteria widely distributed in the sewer system on various structure elements have been isolated from damaged ferroconcrete samples. Effect of protective materials on microbe-induced corrosion of metal famework of concrete samples has been studied. Selective effect of corrosion inhibitors and coatings on the growth of corrosion-active bacteria of sulphur and nitrogen cycle has been revealed. It is shown that acid medium formed by thionic bacteria is more aggressive than ammonium-hydrosulphide one formed by denitrifying and sulphate-reducing bacteria. It has been established that the corrosion inhibitor--pyrquin, organosilicon coating CO-FMI and epoxyorganosilicon coating 4sk are most effective materials as to the action of thionic bacteria--dangerous agents of ferroconcrete aerobic corrosion.
Kopteva
Zh P
ZhP
Zanina
V V
VV
Purish
L M
LM
Piliashenko-Novokhatnyĭ
A I
AI
Kozlova
I A
IA
D001419:Bacteria / Q000302:isolation & purification / Q000378:metabolism*; D003252:Construction Materials / Q000382:microbiology*; D003343:Corrosion; D017753:Ecosystem; D007501:Iron / Q000378:metabolism*; D017646:Organosilicon Compounds / Q000737:chemistry; D010084:Oxidation-Reduction; D012722:Sewage / Q000382:microbiology*; D016999:Sulfur-Reducing Bacteria / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism; D013855:Thiobacillus / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism; D013997:Time Factors
D017646:Organosilicon Compounds; D012722:Sewage; D007501:Iron