Answer:
porosity = 0.07 or 7%
dry bulk density = 3.25g/cm3]
water content =
Explanation:
bulk density = dry Mass / volume of sample
dry mass = 0.490kg = 490g
volume = πr2h = 3.142 * 2 *2 *12 = 150.8cm3
density = 490/150.8 = 3.25g/cm3
porosity = [tex]\frac{wet mass - dry mass }{wet mass}[/tex] = [tex]\frac{0.525 - 0.49}{0.525}[/tex] = 0.07 or 7%
water content = [tex]\frac{wet mass - dry mass}{wet mass}[/tex] = 7%
Answer:
Given diameter 4cm=0.04m,lenght=0.12m
Iniatial mass m1=0.525kg final mass m2=0.490kg
dry bulk density =?
Porosity=?
Water content=?
Water content
Mass of water=0.525-0.490=0.035kg
m=Mw/Ms=0.935)0.525=0.0667 Pr 6.67%
Dry bulk density
Recall Density= mass/volume
Volume =πr^2h=π*(0.02)^2*0.12=7.54*10^-3m^3
Dry density=0.490/(7.54*10^-3)=64.97kg
Porosity
n=e/1+e
Were void ratio e=0.0667*2.6=0.1734
Porosity=0.1734/1+0.1734=0.15
