Calcium Lignosulfonate Construction Grade
Lignin-based water reducer and set retarder for concrete, mortar and construction chemicals.
Calcium Lignosulfonate Construction Grade is a light brown lignin-based powder used as a conventional water reducer and set retarder in concrete and cementitious materials.
It improves workability, pumpability, cohesion and formulation consistency in ready-mix concrete, precast elements, pavers and masonry mortars.
This grade is typically evaluated in construction admixture systems that need better flow, mild retardation and practical cement compatibility.
Key Performance Functions
Water Reduction
Can reduce water demand up to approximately 12% depending on cement system and dosage.
Workability Improvement
Improves flow, pumpability and cohesion in concrete mixtures.
Set Retardation
Extends initial setting time where longer open time is needed.
Segregation Control
Improves cohesion and helps limit segregation after proper mix design.
Main Specifications
| Parameter | Specification |
|---|---|
| Form | Powder |
| Appearance | Light brown powder |
| Bulk Density | Approx. 0.8 g/cm3 |
| Moisture Content | 5% max |
| pH (5% solution) | 4 – 6 |
| Recommended Dosage | 0.8% – 2.0% by weight of cement |
| Typical Applications | Ready-mix concrete, precast, pavers, masonry mortars |
| Shelf Life | 12 months from date of manufacture |
Note: The above values are typical technical data for reference. Final agreed specification and COA shall prevail.
Recommended Application Areas
| Application Area | Typical Use | Customer Value |
|---|---|---|
| Ready-Mix Concrete | Water reducer and mild retarder for concrete mixtures. | Improves workability, flow and practical placement control. |
| Precast Concrete | Admixture component for precast elements after trial validation. | Supports mixture consistency and surface quality. |
| Pavers & Blocks | Binder and dispersing support for dry or semi-dry cementitious mixes. | Improves cohesion and reduces segregation. |
| Masonry Mortars | Workability aid for mortar and grout mixes. | Improves open time and application consistency. |
| Construction Chemical Blends | Raw material for compound admixture development. | Provides lignosulfonate performance in blended systems after compatibility testing. |
Suggested Usage Guidance
| Application | Typical Starting Dosage / Use | Technical Note |
|---|---|---|
| Concrete / mortar | 0.8% – 2.0% by weight of cement | Higher dosages may retard set beyond specified limits. |
| Mix design | Pre-test required | Confirm with local cement, aggregate and admixture system. |
| Admixture combinations | Compatibility test required | May cause unwanted effects with some admixture combinations. |
| Storage use | Use original sealed package | Avoid moisture absorption and caking before production use. |
Dosage and application method should be verified by laboratory or pilot testing. Performance depends on raw materials, process conditions, temperature, moisture, mixing time and target technical results.
Related Pages
Buyer Questions
What does calcium lignosulfonate construction grade do in concrete?
It works mainly as a conventional water reducer and mild set retarder, helping concrete and mortar gain better flow, pumpability and batching consistency.
Is it suitable for precast and pavers?
Yes. It is commonly evaluated in precast elements, pavers and semi-dry cementitious mixes after plant trials.
Should it be tested with other admixtures?
Yes. Compatibility with cement type and other admixture components should always be confirmed before commercial use.
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