The percentage of the total hole area of hollow brick to the brick area is called the hole rate of hollow brick, which should generally be above 15%. Compared with solid brick, hollow brick can save a lot of land and brick burning fuel and reduce transportation weight; Reduce the labor intensity during brick making and masonry, and speed up the construction progress; Reduce the building weight, increase the number of buildings and reduce the cost.
Characteristics of hollow brick: light weight, high strength, good thermal insulation, sound insulation and noise reduction. Environmental protection and pollution-free, it is an ideal filling material for frame structure buildings. After inspection, all the quality indexes of the brick meet the national standards.
The fatal disadvantage of hollow brick is its poor seismic performance. Of the 25 people who died in Yingjiang earthquake in Yunnan, 1 1 died because of the collapse of cement hollow brick houses. Use hollow brick, because it is lighter, it will not cause cracking of wallboard. In fact, there are many other partition materials, including light steel keel gypsum board and steel wire mesh, which are relatively light and save space.