“…The bulk density of the immersed sample was calculated by the equation where; BD I is the bulk density of the immersed sample as defined by ASTM C 642, W I is the mass of the sample immersed in salt solution and surface dried, W IB is the mass of the sample immersed and boiled in salt solution and surface dried, W IBS is the mass of the sample boiled in salt solution, cooled, and then suspended, and ρ is the density of the salt solution after boiling. (2) where; W D is the mass of the sample immersed in salt solution and surface dried, W IB is the mass of the sample immersed and boiled in salt solution and surface dried, and W IBS is the mass of the sample boiled in salt solution, cooled, and then suspended.…”