EN 15304:2010

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.PU]RYDQMXWDMDQMXBestimmung des Frost-Tau-Widerstandes von dampfgehärtetem PorenbetonDétermination de la résistance au gel/dégel du béton cellulaire autoclavéDetermination of the freeze-thaw resistance of autoclaved aerated concrete91.100.30Beton in betonski izdelkiConcrete and concrete productsICS:Ta slovenski standard je istoveten z:EN 15304:2010SIST EN 15304:2010en,fr01-september-2010SIST EN 15304:2010SLOVENSKI
STANDARDSIST EN 15304:20081DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15304
March 2010 ICS 91.100.30 Supersedes EN 15304:2007English Version
Determination of the freeze-thaw resistance of autoclaved aerated concrete
Détermination de la résistance au gel/dégel du béton cellulaire autoclavé
Bestimmung des Frost-Tau-Widerstandes von dampfgehärtetem Porenbeton This European Standard was approved by CEN on 23 January 2010.
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Determination of the loss in compressive strength in addition to the loss in mass . 13A.1General . 13A.2Test specimens . 13A.2.1Number of test specimens . 13A.2.2Preparation of test specimens . 13A.3Testing procedure. 13A.3.1Freeze-thaw tests . 13A.3.2Conditioning of the test specimens for compression test after the freeze-thaw cycles. 13A.3.3Compression test. 14A.4Test results . 14A.4.1Calculation of loss of compressive strength of main test specimens . 14A.4.2Determination of mass loss . 15A.4.3Calculation of dry density . 16A.4.4Calculation of moisture content . 16Annex B (informative)
Flow chart of freeze-thaw test . 17Bibliography . 19 Figures Figure 1 – Cutting scheme .8Figure B.1– Cutting scheme . 17 SIST EN 15304:2010

measured initial moist mass of the reference test specimen i immediately after removal from polythene bag (or similar) rni,m
measured moist mass of the reference test specimen i representing the state immediately after completion of n freeze-thaw cycles (should be equal to ri,0m) rnid,m measured oven-dry mass of the reference test specimen i immediately after completion of n freeze-thaw cycles of the main test specimens mi,0m
measured initial moist mass of the main test specimen i immediately after removal from polythene bag (or similar) prior to commencing the freeze-thaw cycles mni,m
moist mass of the main test specimen i immediately after completion of n freeze-thaw cycles mid,0m equivalent oven-dry mass of the main test specimen i immediately after removal from the polythene bag (or similar) mnid,m measured oven-dry mass of the main test specimen i immediately after completion of n freeze-thaw cycles SIST EN 15304:2010

moisture content of the main test specimen i immediately after removal from polythene bag or similar (assumed to be equal tori,0µ) mni,µ
moisture content of the main test specimen i immediately after completion of n freeze-thaw cycles (at the end of the freeze-thaw test) miL
loss in oven-dry mass of the main test specimen i after completion of n freeze-thaw cycles 3.2.2 Symbols specific to Annex A rfai,m
measured moist mass of the fragments of the saturated (see A.3.2.2) reference test specimen i immediately after the compression test rfdi,m measured oven-dry mass of the fragments of the saturated (see A.3.2.2) reference test specimen i tested on compression mn2i,m
measured moist mass of the saturated (see A.3.2.2) main test specimen i after finalisation of the n freeze-thaw cycles and after water immersion, immediately before testing of compressive strength (if grinding is needed, before that) mfai,m measured moist mass of the fragments of the saturated (see A.3.2.2) main test specimen i immediately after the compression test mfdi,m measured oven-dry mass of the fragments of the saturated (see A.3.2.2) main test specimen i tested on compression rnai,µ
calculated moisture content of the saturated (see A.3.2.2) reference test specimen i immediately after compression test (assumed to be equal to the moisture content directly before compression test) mnai,µ
calculated moisture content of the saturated (see A.3.2.2) main test specimen i after finalisation of the n freeze-thaw cycles, immediately after compression test mnci,f
individual value of the compressive strength of the main test specimen i after the specified number of cycles (n) and subsequent conditioning according to A.3.2.1 or A.3.2.2, in megapascals rnci,f
individual value of the compressive strength of the appropriate reference test specimen i , conditioned in the same manner (according to A.3.2.1 or A.3.2.2) and tested at the same time as the corresponding main test specimen, in megapascals relci,f relative decrease of compressive strength of the main test specimen i as a percentage of the initial compressive strength SIST EN 15304:2010
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