[Building materials] calculation of the problem, the opening gap and the calculation of the gap, Guiqiu master! The The
Find out the following concepts, you will naturally do
Can you raise your offer? To be honest, the question you ask is hard to answer
density: the material in the absolute state of the mass per unit mass (material quality and material entities accounted for the volume of the volume ratio) apparent density (depending on the density): the quality of the material and the apparent volume ratio The apparent volume is the volume of the material solids plus the volume of the closed pore, which is the volume of the material that is drained the quality of water absorption: water saturation in the natural saturated state, the pore water quality and dry weight ratio open porosity: open pore volume and particles plus all the pore volume (including open pores and closed pores) ratio closed porosity: closed pore volume and particles plus all the pores (including open pores and closed pores) volume ratio the volume of water absorption: refers to the material saturated with water, the volume of absorbent material accounted for the percentage of the volume of dry material the void ratio: refers to the bulk material in the bulk volume of particles between the solid matter volume gap (open pores and gaps And the percentage of the cumulative volume Porosity: Percentage of the ratio of the pore volume in the material to the volume of the material in the natural state
