What are the dimensions of hollow bricks?

The overall specification is 390×190×190 mm.

1, sintered hollow brick: length is 290,240, 190mm, width is 240, 190, 180, 175, 140,/kloc.

2. Hollow glass brick: the most common length and width are190 *190 * 80mm/95mm, others are145 *145 * 80mm/95mm.

3. Others include 240*240*80mm, 240* 1 15*80mm and special-shaped bricks, such as 190*90*80mm.

4. Porous brick: main product specifications and dimensions: 240 ㎜×115 ㎜× 90 ㎜; Half brick (120 ㎜×115 ㎜× 90 ㎜), seven-part brick (180 ㎜×15 ㎜× 90 ㎜) can be used for masonry, or it can be combined with the main building.

Product strength grades: MU30, MU25, MU20, MU 15, MU 10, MU7.5, MU5.0 and MU3.5.

Extended data:

Light weight, high strength, good thermal insulation, sound insulation and noise reduction performance. 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 weakness of hollow brick: poor seismic performance. In the Yingjiang earthquake in Yunnan, 1 1 of 25 people died in the collapse of concrete hollow brick houses.

Use hollow bricks, because hollow bricks are relatively light, which 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.

For general home decoration,12 should be used for building brick or Shi Zhuan wall. If it is made of hollow brick, the wall width should be 120 thick, and it should be painted. The main advantage is light weight, usually two-thirds of 95 bricks, which will not bring too much burden to the house itself. The sound insulation effect is ok, because the sound insulation function is considered in the arrangement of hollow brick holes, because the wall thickness of 95 brick is the same as that of hollow brick.

It can reduce the pressure on the ground because it is lighter. Can make the internal pressure = external pressure building not easy to crack!

Non-load-bearing hollow brick walls should be paved with solid bricks at least at the bottom.

It is forbidden to dump and throw porous bricks during loading, unloading and transportation. The accepted perforated brick shall be neatly stacked on a solid site according to the grade, and the stacking height shall not exceed 2m.

Porous brick should be watered and wetted 1-2 days in advance at room temperature. When laying, the moisture content of perforated brick should be controlled between 10% ~ 12%.

Mortar mixture ratio should be weight ratio, sand should use medium sand, and should be screened, and shall not contain grass roots and other sundries; The silt content of sand shall not exceed 5%, and the consistency of mortar shall be controlled at 70-90 mm ..

Masonry should be staggered up and down, overlapping inside and outside. It is appropriate to adopt the masonry form of Yishun Dingyi or Meihua Ding. The lap joint between the upper and lower skins of P-type porous brick is generally 1 15mm, and the individual parts shall not be less than 53 mm. The brick column shall not be cored.

Before laying, we should consider the way of laying, pay special attention to the arrangement of bricks at the joints, and arrange them as well as possible. When laying, the holes of perforated brick should be perpendicular to the compression surface; Porous bricks should not be cut, and if necessary, cut or use a small amount of solid bricks on site; Masonry corner and junction should be laid at the same time. If it cannot be laid, it should be laid as an oblique IF. If the height difference must not exceed the height of the scaffold. When masonry meets mortar joint, the surface of mortar joint must be cleaned, watered and wetted, and filled with mortar to keep the mortar joint straight.

Masonry should adopt the "trinity" bricklaying method. Masonry mortar joint should be horizontal and vertical, the thickness of horizontal mortar joint and vertical mortar joint is 8- 12mm, and the mortar plumpness of horizontal mortar joint of masonry should not be less than 80%; The vertical mortar joint can be filled with mortar or plastered at the top to make the mortar full. It is forbidden to grout the joints with water, and the joint depth should be controlled between 5- 12mm.

References:

Baidu encyclopedia-hollow brick