EN 772-4:1998 Methods of test for masonry units - Part 4: Determination of real and bulk density and of total and open porosity for natural stone masonry units
This European Standard specifies a method of determiningThe real density andThe bulk density andThe open and total porosity of natural stone masonry units.
EN 772-4:1998 history
1998EN 772-4:1998 Methods of test for masonry units - Part 4: Determination of real and bulk density and of total and open porosity for natural stone masonry units