The formation of organic acids by fermentation and or the addition of acids to wet bulk storage piles creates corrosion problems. Slabs under wet bulk storage piles made of concrete will be subject to corrosion and will need to be
resurfaced rather frequently. Asphalt surfacing has been proposed, but the danger is that particles and fragments of
asphalt may enter the pulp mill which is decidedly detrimental. Epoxy resin and other plastic coatings can be used to protect the concrete but are expensive. The use of sulphur concrete for wet storage pile slabs is another solution.