Concrete blocks are made of cement, aggregate, and admixtures, admixtures, etc produced by cement concrete hollow block machine added as needed, concrete solid bricks (hereinafter referred to as bricks) which are stirred, shaped, and supported by water are mainly used for masonry walls. In recent years, applications have become increasingly widespread.
Cement
Should comply with the provisions of GB 175.
Fine aggregate
Should comply with the provisions of GB/T 14684.
Coarse aggregate
1. Crushed stone and pebbles shall comply with the provisions of GB/T 14685, and the maximum particle size shall not exceed 15 mm.
2. Lightweight aggregates shall comply with the provisions of GB/T 17431.1.
3. Heavy slag should meet the requirements of YBJ 20584.
Admixture
Fly ash should meet the requirements of GB/T 1596, and the slag powder should meet the requirements of GB/T 18046.
Admixture
Should comply with the provisions of GB 8076.
Water regulations
Should comply with the provisions of JGJ 63.
Radionuclide
The raw materials used should meet the requirements of GB 6566.
Density level
According to the density of concrete itself, it is divided into three grades of grade A (≥2100kg/m3), grade B (1681kg/m3~2099kg/m3) and grade C (≤1680kg/m3).
power level
The compressive strength of bricks is divided into six grades: MU40, MU35, MU30, MU25, MU20, and MU15.
mark
Products are marked in the following order: code, size, strength class, density class, and standard number.
Tag example:
The specification is 240mm × 115mm × 53mm, the compressive strength grade is MU25, the density grade is B grade, qualified concrete brick:SCB 240×115×53 MU25 B GB/T 21144-2007.We are a cement block bricks machine manufacturer,If you wish to contact Unik machinery ltd and learn more about how we can help you benefit from our services or to discuss any staffing needs, you can reach us at sales@unikmachinery.com
