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Оцінка ефективності дії захисного покриття на корозійну стійкість бетону

Оцінка ефективності дії захисного покриття на корозійну стійкість бетону

Abstract

Визначено технологічні властивості вихідних композицій для захисних покриттів, на основі поліметилфенілсилоксану, наповненого алюмінію та цинку оксидами, способи нанесення на поверхню бетону. Досліджено вплив добавок Na₂SiF₆ та каолінового волокна на показники водопоглинання, корозійної та біологічної стійкості обробленого бетону. Експериментально підтверджено підвищення корозійної стійкості обробленого бетону до дії іонів Mg²⁺ та SO₄²ˉ відповідно на 20-35 % та 18-21 %. On the basis of theoretical and experimental studies confirmed the possibility of increasing the corrosion resistance of the concrete surface by treating it with effective protective coatings, which are characterized by improved physical and mechanical properties, adhesion to the substrate, hydrophobicity, which is achieved by modifying polymethylphenylsiloxanes oxide and silicate materials. Experimentally confirmed that the coating increase resistance to concrete ions Mg²⁺ and SO₄²ˉ, whereby the corrosion resistance increases correspondingly 20-35 % and 18-21 % due to the surface insulation from external aggressions. Complex methods of physical and chemical analysis proved the stability of the phase composition of the outer and inner layers of concrete protected. It was found that the microstructure of a protected fine concrete after the tests in aggressive environments Na₂SO₄ and MgCl₂ provided portlandite, hydrosulfoalyuminate, calcium low-basicity hydrosilicates, calcium carbonate and etringite. The presence in the surface structure of cement stone protected portlandite confirms the high degree of corrosion protection of concrete.

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Keywords

cement, corrosion resistance, цинк оксид, водопоглинання, aluminium oxide, zinc oxide, бетон, стійкість корозійна, волокно каолінове, kaolin fiber, покриття захисні, алюміній оксид, water absorption, поліметилфенілсилоксан

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green