Industry and traffic are major air polluters. The burning of oil derivitives and coal produces sulphur dioxides which turn into sulphuric acid. Nitrogen oxide is produced by the internal combustion engine and becomes nitric acid. Natural stone is composed mainly of lime, which is sensitive to acid rain.
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GRAFTEX® PROTECTS
AGAINST ACID RAIN |
The reinforcing bars in the concrete are protected against oxidation as long as the pH remains above 9. Acids tend to lower the pH over time and create conditions favourable to oxidation of rebar (pH<9). |
GRAFTEX® PROTECTS AGAINST CARBONIZATION
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Acid or not, rain erodes and penetrates structures.
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GRAFTEX® PROTECTS AGAINST WATER |
When rain penetrates the substrate and freezes,
it can cause considerable spalling. |
GRAFTEX® PROTECTS AGAINST FROST |
In damp environments, moss, algae and micro-organisms proliferate. These elements keep the structure damp promoting its decay.
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GRAFTEX® PROTECTS AGAINST THE FORMATION OF MOSS AND MICRO-ORGANISMS
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Urban structures are an invitation to stains, grime and graffiti. Poorly protected surfaces retain traces of these assaults despite cleaning efforts.
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GRAFTEX® PROTECTS AGAINST GRAFFITI |
The various substrates can absorb water, sometimes very deeply, through pores and micro-cracks. This moisture creates optimal conditions for deterioration to set in. |
GRAFTEX® PROTECTS AGAINST MICRO-CRACKS |
and then there's the advantage - beyond price - of avoiding weeks of dust.