Question

A figurine weighs 1500 g when dry, 1845 g after being soaked in water, and 1005 g when suspended in water.

Find: the apparent porosity, the true porosity, the fraction of closed pores

Answer #1

To produce a strong ceramic part, the silicon carbide
particles are compacted and baked.
3
At high temperature, the specific gravity of SiC is 3.2 g /
cm. The ceramic piece is weighed.
respectively when dry (200 g), after soaking in water (223 g)
and while suspended in water (211 g). Calculate the apparent
porosity, the actual porosity, and the volume fraction of the
closed pores.

Ceramic
To produce a strong ceramic piece, silicon carbide particles are
compacted and baked at high temperature. The specific gravity of
SiC is 3.2g / cm3. The ceramic piece is weighed
respectively when dry (200 g), after soaking in water (223 g) and
while suspended in water (211 g). Calculate the apparent porosity,
actual porosity, and volume fraction of pores that are closed.

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