St. Technisch Centr. v.d. Keramische Industrie (TCKI)
VELP GLD, NL
EN 772-9 VLP 16 Masonry units Determination of net volume and percentage of voids; gravimetrically ANA-KO-39, ANA-KO-46 EN 772-3 VLP 17 Masonry units (except for natural stone) Determination of net and gross dry density; gravi