Typical evaluation scope
Extended transport, hot weather and long placement windows.
Extended concrete workability
Slump-Retaining Admixture
A liquid slump-retaining component designed for blending and formulation discussions where longer concrete workability retention is required.
Liquid
Chloride-free catalogue grade
PCE blending
Product role
Application context
A liquid slump-retaining component designed for blending and formulation discussions where longer concrete workability retention is required.
Trial requirement: Density is listed in the source material without a reliable unit, so it is intentionally omitted pending current specification confirmation.
Technical overview
Catalogue reference information
| Catalogue model | RN-1 |
|---|---|
| Appearance | Colourless transparent liquid |
| Solid content | 40–50% |
| Catalogue reference dosage | 0.1–0.4% |
| Suggested PCE blend reference | 1:9 to 2:8 |
Reference values are transcribed from supplied company material. Request the current grade specification before purchasing or commercial use.
Information to include with your inquiry
Application
Concrete, mortar or formulation route.
Target
Required performance and local standard.
Materials
Cement, binders and other admixtures.
Destination
Country and required documents.
Buyer-oriented technical selection
Slump-retention component selection
Factors that change performance
Cement compatibility, release profile, target retention time, air response and interaction with water-reducing pce.
Recommended verification
Test both initial workability and the full required time window; excessive delayed release can change later slump.
Documents and evidence
Ask for the current grade specification and batch documentation. Review available company certificates, test evidence and supplier batch-report scope separately.
Compare measured retention before changing the grade
Use the slump retention calculator to summarize two measured readings and their actual elapsed time. It does not forecast future slump.
If retention changes unexpectedly, the concrete admixture troubleshooter provides a measurement-first checklist. Confirm water, temperature, addition sequence and material lots before changing the formulation.
Grade-specific buying brief
Write the required retention curve into the buying brief
State the required initial and later workability, the elapsed-time reference and the actual concrete temperature. Include the cementitious system and current water-reducing admixture. A single advertised number of hours is insufficient for matching a component to the concrete plant's delivery and placement window.
NRMCA distinguishes slump loss from setting behavior. Evaluate them as separate requirements rather than treating a retarder as an automatic substitute. The catalogue RN-1 dosage and blend references also need their mass/solids basis confirmed before use in a comparison. No fixed retention duration or universally suitable blend ratio is established by this page.
Details for a matched sample and quotation
- Timing: clock origin, required readings and temperature
- Materials: cement/SCMs, water-reducer grade and current solids
- Basis: product/active solids and binder/product denominator
- Evidence: current RN-1 specification and grade-matched trial record