prEN 12390-20
Sukietėjusio betono bandymai. 20 dalis. Poringumo nustatymas
Standarto projektas Viešoji apklausaProjekto etapai
1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
Nuo 2025-02-28
iki 2025-04-29
4. Closure of enquiry
5. Submission to Formal Vote
Organizacija
CEN Europos standartizacijos komitetasICS
91.100.30 - Betonas ir betono gaminiaiTechnikos komitetas
TK 19 Betonas ir gelžbetonisUžsienio technikos komitetas
CEN/TC 104Komentarų skaičius
0Komentavimo pradžia
2025-02-28Taikymo sritis
This document describes the method for the determination of the porosity (open pores) of hardened concrete on test specimens of any type (moulded, sawn, cored) or any shape. The test is suitable for specimens having a declared value of D of the coarsest fraction of aggregates actually used in the concrete (Dmax) not greater than 40 mm. The test method is not applicable for concrete containing lightweight aggregate.