MT/T 40-1987 (English Version) PDF

Scope: This standard applies to the determination of rock apparent density. Rock apparent density refers to the mass per unit volume of rock (including pores). According to the different water-containing states, the apparent density is divided into natural apparent density, natural apparent density, dry apparent density and saturated apparent density. The natural apparent density is the apparent density of the specimen in its naturally hydrated state. The natural apparent density is the apparent density after the specimen is prepared and stored in a dryer with water stored in the lower part for 1^2 days. The kiloview density of the specimen is 105-110. Apparent density after drying for 24 hours at C temperature. The saturated apparent density is the apparent density of the specimen in the saturated water absorption state. This standard adopts wax sealing method and quantitative product method.

MT/T 40-1987 history