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Wall materials

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)

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Wall materials

Wall materials

Product name

Test standard

Test items

Dimensional deviation

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


Founded in 2002 and headquartered in Haidian District, Beijing, the company has developed into a large-scale comprehensive inspection and certification group with nearly 30 large-scale experimental bases, nearly 100 wholly-owned subsidiaries and service network all over the country.
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