DS/EN 772-4:1999 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 determining the real density and the bulk density and the open and total porosity of natural stone masonry units.
DS/EN 772-4:1999 history
1999DS/EN 772-4:1999 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