Charles Ward (Donegal, 100% Redress Party) | Oireachtas source

One of the concerns is the breach of EU regulations. The recommended total levels of sulfur they are recommending in this new version of I.S. 465 breaches EU regulations for concrete aggregates, namely, EN 12620, which limits the total sulfur level for concrete aggregate to 0.1% if pyrrhotite is present. The NSAI has set a total sulfur limit of 3% for testing defective concrete in this revised document, which is higher than EN 12620's 1%, because the test is for concrete, not raw aggregate. Raw aggregate is the problem. As we take into account additional sulfur contribution, it comes from the cement paste. Page 25 of the revised document states that 5% to 10% of this mass concrete would have total sulfur content of 0.1% where iron sulfides are absent. This is leaving it very vulnerable to needing to be revisited again. The NSAI has also recommended total sulfur levels of a threshold of 3%, despite the fact that anything higher than 2% means concrete aggregate would not comply with an EU standard.

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