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Komité: ISO/TC 71/SC 8 (Environmental management for concrete and concrete structures)
Opprinnelse:
Sluttdato: 1. jan 2019
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Komité: CEN/TC 104 (Concrete and related products)
Opprinnelse:
Sluttdato: 3. jan 2019
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This document describes the procedure for obtaining the non-steady-state chloride migration coefficient of specimens of hardened concrete at a specified age. The test procedure does not take into account any interaction of concrete with the saline solution over time. The test result is a durability indicator with respect to the resistance of the concrete investigated against chloride penetration. The test procedure does not apply to concrete specimens with surface treatments such as silanes. If the aggregate is electrically conductive or porous this will influence the magnitude of chloride migration. This fact has to be taken into account when establishing threshold values. It prevents comparison of chloride migration values between concretes if the aggregates show a difference of half an order of magnitude (higher or lower) of chloride migration. Similar influence may be seen when metallic or electrically conducting fibres or particles are present.
Komité: CEN/TC 256 (Railway applications)
Opprinnelse:
Sluttdato: 31. jan 2019
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This part of the EN 13230 series defines additional technical criteria and control procedures as well as specific tolerance limits related to manufacturing and testing prestressed bearers for switches and crossings with a maximum length of 8,5 m. Bearers longer than 8,5 m are considered as special elements and will comply with FprEN 13230 5:2015.