I am looking to use high strength bars, high carbon bars (835MPa yield +)for ground anchors with galvanised coating for protection but have come across the hurdle of "hydrogen embrittlment".
I am looking for ways of elevating this phenomenon and have learned ASTM A123-89 and BS 729-71 standards for galvanisation do not specify the pickling bath or temperature that the galvanisation is carried out.
By blast cleaning the bars as opposed to pickling, or by post-treatment detrimental effects can be avoided or at lease minimised. I would be most grateful for any comments or case history on these alternative methods.
Cheers Big Bars.
I am looking for ways of elevating this phenomenon and have learned ASTM A123-89 and BS 729-71 standards for galvanisation do not specify the pickling bath or temperature that the galvanisation is carried out.
By blast cleaning the bars as opposed to pickling, or by post-treatment detrimental effects can be avoided or at lease minimised. I would be most grateful for any comments or case history on these alternative methods.
Cheers Big Bars.
