Size hollow brick porosity directly reflects the degree of dense material. Void structure inside the material, and can be divided into two communicating closed. Not only through each other and interconnected pores with the outside world, not only closed pores not connected with each other and with the outside world cut off. Pore ​​size can be divided by a very fine pores, small pores and coarse pores. Size and distribution of pores greater impact on the performance of the material.
       By compression molding hollow bricks, in the external force, close contact between the product dense granules, which only accounted for 16% of capillary pores, improve the density and porosity significantly reduced. Pastes low porosity, water absorption is small. Hollow brick porosity than the porosity of the sintered bricks to be small.
Although small hollow brick model is small, but the production process is the same, and it is up to the strength required by customers. But we also need a reasonable conservation can, after the hollow brick molding, using the Nature Conservancy, to Zhuandui week watering with a hose, and conservation in the humid air. Compressive strength and flexural strength of the relationship with age, compressive and flexural strength of brick age grows its intensity is increasing, the fastest growth in 28 days, which is to enhance the strength of the cement itself were similar.

        Small hollow brick pore size greater impact on the content and the physical properties of hollow bricks. If the apparent density of bricks, air permeability, water absorption, mechanical strength, impermeability, frost resistance, acoustic and thermal insulation properties have a significant impact.