Methods of test for masonry units - Part 18: Determination of freeze-thaw resistance of calcium silicate masonry units; German version EN 772-18:2011— 9 стр.
Methods of test for masonry units - Part 18: Determination of freeze-thaw resistance of calcium silicate masonry units; German version EN 772-18:2000— 5 стр.
Methods of test for masonry units - Part 18: Determination of freeze-thaw resistance of calcium silicate masonry units; German version EN 772-18:2000— 5 стр.