BS EN 772-4:1998 Methods of test for masonry units - 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.
BS EN 772-4:1998 history
1998BS EN 772-4:1998 Methods of test for masonry units - Determination of real and bulk density and of total and open porosity for natural stone masonry units