Metakaolin Grade Selection for Cement and Mortar
If you are buying metakaolin for cement or mortar, ask for the evidence of reactivity your formulation actually needs.
Relia's calcined-kaolin candidates provide a starting point, but the product name alone does not establish activity.
- Material
- Identity and calcined form
- Activity
- Method, sample and scope
- Hardened mix
- Your test age and acceptance
From Your Requirement to a Defined Grade
Relia manufactures kaolin and calcined-kaolin materials in China through its own factories.
Our metakaolin enquiry should state the base binder, intended replacement level and the relevant activity or performance method. Give us the accepted reference and project limits. The proposed calcined material must be identified by its own specification and evaluation basis before a use-related title becomes a purchasing assumption.
Material
Identity and calcined form
Activity
Method, sample and scope
Fresh mix
Water demand and workability
Hardened mix
Your test age and acceptance
The Reactivity Task
Two entries share the BY-1250 designation but carry different oxide fields and application descriptions. A shared model code is therefore not enough to establish equivalent metakaolin. We identify the actual offered material and request relevant activity data before comparing it in your cement or mortar system.
Identity and calcined form
Method, sample and scope
Your test age and acceptance
Metakaolin Listings Need an Activity-Based Purchase File
| Review area | Listed data and acceptance basis | Use in your selection |
|---|---|---|
| BY-1250 · 5722 | The entry names concrete, mortar and cement evaluation and lists Al2O3 42 under a percent-labelled heading. | Identify exactly what the percentage measures before normalising quotations or dosage. |
| BY-1250 · 5939 | A refractory-oriented entry lists Al2O3 47 under a percent-labelled heading. Do not assume the same composition as 5722. | Identify exactly what the percentage measures before normalising quotations or dosage. |
| Reactivity evidence | Request phase, calcination identity and the relevant activity-test method and result for the actual sample. | Keep chemical identity, assay basis and the actual offered grade in the same specification. |
| Mix acceptance | Set cement or mortar system, water/binder basis, workability, test ages and the required hardened properties. | Use this item to define the candidate and the evidence needed for your application. |
Compare the Product Candidates
Use these listed candidates to start a grade-specific discussion with us.
A Cementitious Comparison
Compare the offered material in your actual cementitious system, recording both fresh-mix behaviour and the required hardened results at stated ages. Fine mesh or calcined naming alone does not establish target reactivity. A justified purchase connects an identified sample, its activity evidence and the mix your team has accepted.
Calcined naming
Does not establish target reactivity.
Mesh ranges
Do not prove activity.
Performance claims
Need the actual mix comparison.
Classification, Impurity Control and Thermal Treatment
Calcination removes structural hydroxyls from kaolinite and changes its phase condition; the resulting reactivity depends on the actual thermal treatment and feed material. Grinding then supplies another variable through distribution and surface area. Connect phase or activity evidence with the powder specification and matched binder tests, rather than using mesh alone to infer pozzolanic performance.
Prepare the clay
Mineral selection, size separation and appropriate purification define the starting kaolin grade.
Control associated material
Relevant impurity analysis establishes the outcome of any separation or purification stage.
Distinguish the thermal route
Hydrous and calcined material are different proposals; calcination changes the clay structure.
Connect the end-use result
Ceramic firing and binder-reactivity evaluation are different tasks and need their own accepted measurements.
- Identity
- Keep hydrous, calcined and reactive-addition claims clearly distinguished.
- Chemistry
- Retain actual oxide and relevant impurity requirements.
- Performance
- Use fired-colour or activity evidence appropriate to the intended application.
A Grade for the Tested System
Retain the raw-material analysis and accepted specimen record with the proposed grade. We discuss supply within that scope. Source or processing changes can then be reviewed against the same activity and performance requirements.
Continue Your Material Selection
If you source kaolin for a white ceramic body or glaze, the firing result matters more than the raw powder colour.
If you need silica for a refractory formulation, first distinguish quartz flour from other materials called silica powder or silica fume.
If a promising sample needs to become a repeat purchase, make the approval record as clear as the trial result.
Start with Your Material Brief
Send us the details below to review a concrete grade proposal and the next evaluation step.
- Application and process
- Material: Identity and calcined form
- Material and grade
- Your current grade or one of the relevant product links above.
- Important requirements
- Activity: Method, sample and scope; Hardened mix: Your test age and acceptance
- Purchase scope
- Trial or order quantity, preferred package and destination.
Qingdao Relia Industries Co., Ltd. · China manufacturing of industrial minerals, chemicals and the listed packaging products.
10 / 11Speak with Our Materials Team
Qingdao Relia Industries Co., Ltd.
Tell Relia the material, application, required grade, quantity and destination. Include the product link or the key limits you already use, so the next conversation starts with a concrete proposal.
Phone
+86 18561762631Call to discuss your enquiry.Qingdao contact address
Shuyuan Road, Qingdao,Shandong, ChinaQingdao contact address for the company.
