Testing concrete - Recommendations for the assessment of concrete strength by near-to-surface tests PAS 15 Fine grain steels are understood

Fine grain steels are understood as steels with a ferritic grain size of 6 or finer when tested in accordance with BS EN ISO 643

NOTE Success in the test is an essential precondition for the qualification of welders and welding operators in new production and repair work in aerospace

factory production control

and additional requirements and test methods for such detectors are given in Annex N

Note 1: Annex A (informative) has been organized so that each clause and subclause number therein addresses the corresponding clause and subclause number in IEC 61511-1:2016 except for being preceded by “A”

Testing concrete - Recommendations for the assessment of concrete strength by near-to-surface tests PAS 15 Fine grain steels are understoodWhat is BS 1881 207 Concrete strength assessment by near to surface tests about? BS 1881 is a British Standard series that discusses methods for testing of concrete. The main aim of the BS 1881 series is to provide best industry recommendation on tests to determine whether your concrete and concrete products are fit for purpose. BS 1881 207 is the 207th part of the series that gives gives recommendations on tests that are designed to assess the