Testing Products

Concrete Properties

Fresh concrete properties

Mechanical properties of concrete

Long-term performance and durability of concrete

Thermal properties of concrete

Concrete mix design and verification

Special concretes

Concrete Raw Materials

Cementitious materials

Aggregates (fine and coarse)

Chemical admixtures

Other materials

Concrete Products

Blocks

Bricks

Reactive Powder Concrete (RPC)

Admixtures for concrete products

Technical Services

Concrete mix design and full performance analysis

Applied technology research for concrete engineering

Performance appraisal and evaluation of concrete structures

Development and performance evaluation of special concretes and products

Standardization research for new concrete materials and products

Testing Items

Fresh Concrete Properties

Consistency test (slump, slump flow, Vebe, etc.)

Setting time

Bleeding and pressure bleeding

Apparent density (unit weight)

Air content, etc.

Mechanical Properties of Concrete

Compressive strength test

Flexural strength test

Static compressive elastic modulus test

Splitting tensile strength test

Toughness index, flexural toughness, and flexural first-crack strength for steel fiber reinforced concrete

Long-term Performance and Durability of Concrete

Freeze-thaw resistance test (rapid and slow methods)

Dynamic elastic modulus test

Water penetration resistance (water permeability) test

Chloride ion penetration resistance test (charge passed and RCM methods)

Shrinkage test (drying, autogenous)

Early cracking resistance test

Creep test under compression

Carbonation test

Steel corrosion (reinforcement corrosion) test

Compressive fatigue test

Sulfate attack resistance test

Relative permeability test

Air void spacing factor, etc.

Thermal Properties of Concrete

Thermal expansion coefficient test

Thermal diffusivity test

Thermal conductivity test

Specific heat test

Adiabatic temperature rise test, etc.

Concrete Mix Design and Verification

Mix design and verification for conventional concrete

Mix design and verification for shotcrete

Mix design and verification for lightweight aggregate concrete

Mix design and verification for special concretes, etc.

Special Concretes

Pervious concrete: mechanical properties, connected porosity, permeability coefficient, etc.

Self-compacting concrete: flowability (slump flow, T500), passing ability (J-ring), etc.

Cementitious Materials

Performance of cement, fly ash, ground granulated blast-furnace slag (GGBS), silica fume, steel slag powder, cement grinding aids, etc.

Aggregates

Full suite of tests for sand and coarse aggregate, including alkali-aggregate reactivity (AAR), rock compressive strength, aggregate exploration test, performance of aggregates for highway engineering, etc.

Chemical Admixtures

Anti-corrosion and rust inhibitors

Water reducers (superplasticizers)

Air-entraining agents

Set retarders

Set accelerators

Pumping aids

Flash setting accelerators (for shotcrete)

Expanding agents

Anti-freezing admixtures

Other Concrete Raw Materials

Performance of steel fibers, polypropylene fibers, basalt fibers, etc.

Blocks

Concrete blocks, small concrete blocks, hollow blocks, porous blocks, autoclaved aerated concrete (AAC) blocks, fly ash concrete blocks, foamed concrete blocks, gypsum blocks, composite insulation blocks, self-insulating concrete composite blocks, etc.

Bricks

Masonry bricks, autoclaved lime-sand bricks, fired bricks, hollow bricks, solid bricks, perforated bricks, cement paving tiles, fly ash bricks, waste and tailings bricks, permeable paving bricks, cinder (boiler slag) bricks, paving bricks (interlocking), kerbstones (curbs), etc.

Reactive Powder Concrete (RPC)

Material properties of RPC

Admixtures for Concrete Products

Concrete curing compounds, concrete release agents (form release), deicing agents (deicers), soil stabilizers, etc.