Testing Products

General Purpose Clinker

Low-Alkali General Purpose Clinker

Moderate Sulfate-Resistant Clinker

High Sulfate-Resistant Clinker

Road Clinker

Moderate Heat Clinker

Low Heat Clinker

Testing Items

Fineness

Density

Specific Surface Area (Blaine)

Normal Consistency Water Demand

Setting Time (Initial and Final)

Soundness (Le-Chatelier / Autoclave)

Sulfur Trioxide (SO₃) Content

Loss on Ignition (LOI)

Magnesium Oxide (MgO) Content

Chloride Ion (Cl⁻) Content

Silicon Dioxide (SiO₂) Content

Ferric Oxide (Fe₂O₃) Content

Aluminum Oxide (Al₂O₃) Content

Calcium Oxide (CaO) Content

Insoluble Residue

Free Calcium Oxide (Free Lime / f-CaO) Content

Tricalcium Silicate (C₃S) + Dicalcium Silicate (C₂S) Content

Calcium Oxide / Silicon Dioxide (CaO/SiO₂) Ratio

Total Alkali Content (Na₂O + 0.658 K₂O)

Water-Soluble Chromium (VI) [Cr(VI)] Content

Total Heavy Metal Content

Leachable Heavy Metals (e.g., TCLP)

Radioactivity (Radionuclide Limits)

Sulfate Resistance

Heat of Hydration

Strength (Compressive / Flexural)

Testing Standards

GB/T 21372 (Clinker — Test methods)

Service Advantages

Professional national-level quality inspection center, focused on serving the quality improvement of the cement industry for nearly 40 years.

Professional team: nearly 90% of technical staff hold a bachelor’s degree or higher, and nearly 70% hold engineer or higher titles.

Comprehensive service methods: full coverage of testing parameters, along with targeted skill enhancement services.

Professional service attitude: ensures objective, accurate, and impartial data.

Authoritative service capability: lead editor of numerous national and industrial standards.

Served major national key projects, including the Three Gorges Dam, Baihetan Hydropower Station, and Wudongde Hydropower Station.