Just need to know more about timber preservatives and their effects (if any) on corrosion rates of hot-dipped galvanized bolts in hardwood structures? What is the standard curing time for the hardwood timbers?
The old ones are all CCA copper cianide compounds. The new ones are based on ACQ Alkaline Copper Quaternary and CA Copper azole . These new treatments must use higher levels of active chemical to get the same effects, and they are more corrosive.
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