Primary benefit
Reduces drying shrinkage to help minimize shrinkage cracking and improve serviceability.
Product Construction Chemicals
Shrinkage-Reducing Admixture (SRA)
Admixture used to reduce drying shrinkage and lower cracking risk in concrete and mortar — especially in slabs, toppings, repair works, and low w/b mixes.
Form: liquid (grades per inquiry)
Packaging: drums / IBC / bulk (lane-dependent)
Documentation: SDS / COA / TDS (and compliance docs) on request
Best-fit projects
Large slabs, thin sections, overlays, repair mortars, precast, and durability-critical concrete.
Procurement-ready
Repeat supply lanes with batch traceability and documentation aligned to your project needs.
Practical note: SRAs complement (not replace) good curing practice, jointing strategy, and correct mix design.
What it does
Shrinkage-Reducing Admixtures are designed to reduce drying shrinkage in cementitious materials. In many mixes, SRA lowers capillary tension during moisture loss, which can translate into fewer shrinkage-driven cracks and improved long-term performance.
Serviceability
Helps reduce crack formation that can affect watertightness, finish quality, and maintenance.
Durability support
Fewer cracks can help limit ingress pathways in aggressive exposure environments.
Project flexibility
Useful for large pours, thin sections, overlays, and mixes with high cementitious content.
Typical performance intent
- Drying shrinkage reduction (often significant when optimized)
- Lower shrinkage-cracking risk in restrained elements
- Improved surface quality for slabs/toppings (finish and curling control support)
Performance depends on cement type, w/b ratio, aggregate grading, curing, placement conditions, and the full admixture package. Trial batching is recommended for validation.
Applications
Common use cases. Share your project constraints and we’ll align grade, dosing, and compatibility.
- Large-area slabs and industrial floors (crack-risk and curling support)
- Toppings, overlays, and screeds (thin section shrinkage management)
- Repair mortars and patching systems (restraint-sensitive repairs)
- Precast elements and architectural concrete (where crack control is critical)
- Watertight or durability-sensitive concrete (tanks, basements, marine zones)
Dosage & addition (general guidance)
Typical dosage window
Often around 0.5%–2.0% by mass of cementitious materials (confirm by trial and spec).
Batching method
Liquid admixture added with mixing water or after initial wetting — follow TDS for sequence.
Best practice
Validate shrinkage, workability, strength, and air content in trial mixes before production.
Important: curing remains essential. Use curing compounds / wet curing / curing covers as required by the project specification.
Typical specifications & formats
Values depend on grade and customer requirements. Confirm details on quotation (COA/TDS).
Type
Shrinkage-Reducing Admixture (SRA), liquid (chemistry per grade)
Appearance
Clear to pale liquid (grade-dependent)
Solids / activity
Per grade (confirm on offer / TDS)
Density
Typical range provided on TDS/COA (batch-specific)
Chloride content
Low-chloride options available (confirm per standard/spec)
Packaging
Drums / IBC / bulk (lane-dependent)
Documentation pack (typical)
Available for procurement, QA/QC, and site acceptance.
SDS
Safety Data Sheet for storage, handling, and PPE guidance.
TDS
Technical Data Sheet with dosage guidance, batching sequence, and compatibility notes.
COA
Certificate of Analysis (batch values) where applicable.
Specifications may vary depending on batch, origin, and packaging selection. Final acceptance criteria should follow the project specification and trial results.