The building materials laboratory is equipped with sophisticated instruments and equipment, and experienced technical personnel. According to the standard method, it can provide technical services for construction engineering testing for customers. The laboratory area is 1500 square meters, and there are more than 400 sets of equipment. According to the relevant national laws, regulations and mandatory standards for engineering construction, the sampling inspection of the items involving structural safety and the witness sampling and testing of the building materials and components entering the construction site are carried out. In order to ensure the quality and safety of construction projects, the quality of building materials used shall comply with the relevant national construction quality acceptance standards / specifications.
Qualification certificate of building materials laboratory:
1. The company has been issued by Shanghai market supervision bureau
2. Our company has been awarded (laboratory accreditation certificate) by China National Accreditation Commission for conformity assessment
3. The company has been approved by Shanghai housing and Urban Rural Construction Management Committee (qualification certificate of construction project quality inspection organization)
4. The company obtained the Shanghai Construction Engineering Inspection Industry Association (evaluation certificate)
Wall materials
Wall materials | ||
Product name | Test standard | Test items |
Fired common brick | GB/T 5101-2017 | |
Appearance quality | ||
strength grade | ||
Freeze thaw | ||
Efflorescence | ||
Lime bursting | ||
Weathering resistance | ||
Radionuclide limit | ||
Sintered porous brick and block | GB/T 13544-2011 | Dimensional deviation |
Appearance quality | ||
Density grade | ||
strength grade | ||
Hole structure and void ratio | ||
Efflorescence | ||
Lime bursting | ||
Weathering resistance | ||
Freeze thaw | ||
Radionuclide limit | ||
Fired hollow brick and hollow block | GB/T 13545-2014 | Dimensional deviation |
Appearance quality | ||
strength grade | ||
Density grade | ||
Hole arrangement and structure | ||
Efflorescence | ||
Lime bursting | ||
Weathering resistance | ||
Radionuclide limit | ||
autoclaved sand-lime brick | GB/T 11945-1999 | Dimensional deviation and appearance quality |
colour | ||
compressive strength | ||
Flexural strength | ||
Frost resistance | ||
Autoclaved aerated concrete blocks | GB/T 11968-2006 | compressive strength |
Dry density | ||
Drying shrinkage | ||
Frost resistance | ||
thermal conductivity | ||
Concrete solid brick | GB/T 21144-2007 | Dimensional deviation |
Appearance quality | ||
Density grade | ||
compressive strength | ||
Drying shrinkage and relative moisture content | ||
Maximum water absorption | ||
Carbonation coefficient | ||
Softening coefficient | ||
Frost resistance | ||
Autoclaved lime sand porous brick | JC/T 637-2009 | Dimensional deviation |
Appearance quality | ||
Pass pattern, void ratio and void structure | ||
strength grade | ||
Frost resistance | ||
Carbonation property | ||
Softening property | ||
Drying shrinkage / radionuclide limit | ||
Bearing concrete perforated brick | GB 25779-2010 | Dimensional deviation |
Appearance quality | ||
porosity | ||
Minimum outer wall and minimum rib thickness | ||
strength grade | ||
Maximum water absorption and relative water content | ||
Linear drying shrinkage | ||
Frost resistance | ||
Carbonation coefficient | ||
Softening factor / radionuclide limit | ||
Non load bearing concrete hollow brick | GB/T 24492-2009 | Dimensional deviation |
Appearance quality | ||
Density grade | ||
strength grade | ||
Drying shrinkage and relative moisture content | ||
Frost resistance | ||
Carbonation coefficient | ||
Softening coefficient | ||
Radionuclide limit | ||
普通混凝土小型砌块 | GB/T 8239-2014 | Dimensional deviation |
Appearance quality | ||
Void ratio | ||
Outer wall and rib thickness | ||
strength grade | ||
Water absorption | ||
Drying shrinkage value | ||
Frost resistance | ||
Carbonation coefficient | ||
Softening coefficient | ||
Radionuclide limit | ||
Radionuclide limits | DB31/T 599 | Dimensional deviation |
Appearance quality | ||
Pass pattern, void ratio and void structure | ||
strength grade | ||
Density grade | ||
Frost resistance | ||
Carbonation coefficient | ||
Softening coefficient | ||
Drying shrinkage | ||
Radionuclide limit | ||
Concrete pavement brick | GB 28635-2012 | Allowable dimension deviation |
Appearance quality | ||
compressive strength | ||
Flexural strength | ||
Wear resistance | ||
Frost resistance | ||
Water absorption | ||
Antiskid performance |
Concrete block | DG/TJ 08-2087 | Dimensional deviation |
Appearance quality | ||
strength grade | ||
Relative water content | ||
Frost resistance | ||
Radionuclide limit |