20.500.12556/DiRROS-16465 RILEM TC 247-DTA round robin test carbonation and chloride penetration testing of alkali-activated concretes Many standardised durability testing methods have been developed for Portland cement-based concretes, but require validation to determine whether they are also applicable to alkali-activated materials. To address this question, RILEM TC 247-DTA "Durability Testing of Alkali-Activated Materials" carried out round robin testing of carbonation and chloride penetration test methods, applied to five different alkali-activated concretes based on fly ash, blast furnace slag or metakaolin. The methods appeared overall to demonstrate an intrinsic precision comparable to their precision when applied to conventional concretes. The ranking of test outcomes for pairs of concretes of similar binder chemistry was satisfactory, but rankings were not always reliable when comparing alkali-activated concretes based on different precursors. Accelerated carbonation testing gave similar results for fly ash-based and blast furnace slag-based alkali-activated concretes, whereas natural carbonation testing did not. Carbonation of concrete specimens was observed to have occurred already during curing, which has implications for extrapolation of carbonation testing results to longer service life periods. Accelerated chloride penetration testing according to NT BUILD 443 ranked the tested concretes consistently, while this was not the case for the rapid chloride migration test. Both of these chloride penetration testing methods exhibited comparatively low precision when applied to blast furnace slag-based concretes which are more resistant to chloride ingress than the other materials tested. alkali-activated materials (AAM) carbonatization chloride penetration Rilem TC durability alkalijsko aktivirani materiali karbonatizacija prodor kloridov Rilem TC trajnost true false true E. & F. N. Spon, RILEM Publications Angleški jezik Slovenski jezik © The Author(s) 2020 Neznano 2023-04-25 08:57:17 2023-08-17 09:07:35 2023-08-18 03:36:02 0000-00-00 00:00:00 2020 0 0 Article: 21; str. 1-17 issue 1 Vol. 53 Feb. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2020-02-13 620.1/.2 1359-5997 10.1617/s11527-020-1449-3 2552935 https://link.springer.com/article/10.1617/s11527-020-1449-3 Odprti dostop 1 a9730d8f-e325-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22179 RAZ_Gluth_Gregor_J._G._2020.pdf RAZ_Gluth_Gregor_J._G._2020.pdf 1 82EC43DA1009DDF19DDF9DFF7884DDD0 28dd142213a924b67e6fda42444c22f0950f7876340855800ff71fe8d9273fb6 1ffaea47-e327-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22181 RAZ_Gluth_Gregor_J._G._2020.pdf RAZ_Gluth_Gregor_J._G._2020.pdf 1 7851764DCD78D2DAFE5B6B69410C1D34 9c425f5d3a01dfaf27fa3c961d466d280e6467328843b4c861adce26a23df0da 26bbac3e-e327-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22182 Zavod za gradbeništvo Slovenije 0 0 0