Mr. Safety Reducer Mix WR-50
Type: Water Reducing & Retarder Concrete Admixture (Multipurpose)
Mr. Safety Reducer Mix WR-50 is a multipurpose admixture formulated to deliver reliable performance in tropical and hot climates, enhancing concrete strength, workability, and durability, while providing extended setting times for efficient construction management.
Mr. Safety Reducer Mix WR-50 is a high-performance water reducing and set retarding admixture designed to improve the strength, durability, and workability of concrete and mortar. This multipurpose admixture effectively reduces the water-cement ratio, delays the setting time to suit hot weather and long transportation, and enhances the plasticity of mortar mixes, eliminating the need for a separate mortar plasticizer.
Ideal for large-scale concrete pours, hot climate concreting, and long-distance transportation, Retarder Mix WR-50 ensures better control over concrete placing and finishing while maintaining long-term structural integrity.
- Water Reduction: Lowers water content by up to 10-15%, enhancing concrete strength and durability.
- Setting Time Control: Delays setting time, allowing extended workability in hot climates and during long transport.
- Improved Workability: Enhances flow and plasticity of both concrete and mortar mixes for easier handling and placement.
- Mortar Plasticizer Function: Improves mortar plasticity for bricklaying, pointing, and blockwork without additional plasticizer.
- Shrinkage Reduction: Minimizes shrinkage and cracking, contributing to longer-lasting concrete structures.
- Chloride-Free: Safe for use with embedded steel reinforcement, reducing corrosion risk.
- ersatile Use: Suitable for both concrete and mortar applications, simplifying admixture selection on site.
- Large concrete pours (foundations, slabs, mass concrete)
- Hot weather concreting requiring delayed set
- Concrete transported over long distances
- Bricklaying mortar and blockwork
- Pointing and rendering mortars
- Pre-cast and ready-mix concrete production
- ASTM C494 Type A – Water-reducing admixture
- ASTM C494 Type B/D – Retarder admixture
- BS EN 934-3 – Mortar plasticizer admixture
- BUET / PWD – Construction admixture and mortar plasticizer compliance
| Component | Generic Name | Quantity | Purpose | Key Properties |
|---|---|---|---|---|
| Sodium Gluconate | Organic Retarder | 70 g | Primary retardation | 3–5 hour delay @ 30°C |
| Polycarboxylate Ether (PCE) | Acrylic Polymer (40%) | 130 g | Water reduction | 18–27% water reduction |
| Tartaric Acid | Organic Retarder | 10 g | Hot-weather stabilizer | Prevents false set |
| Borax | Inorganic Modifier | 5 g | C₃A control | Eliminates flash set |
| Lignosulfonate | Byproduct Retarder | 40 g | Cost-effective retardation | Synergizes with gluconate |
| Triethanolamine (TEA) | TEA Accelerator | 6 g | Strength compensation | Counters over-retardation |
| DBNPA | Biocide | 2 g | Microbial control | 24-month shelf life |
| Potassium Carbonate | Alkali Stabilizer | 8 g | pH control | Maintains pH 6.5–7.5 |
| Deionized Water | Solvent | 729 mL | Carrier liquid | 1.07 g/cm³ density |
Key Advantages:
- Borax-Tartaric Acid System: Ensures consistent performance across all cement types
- Enhanced PCE: Higher solids content (40%) for better water reduction
- DBNPA Biocide: Superior to benzalkonium in high-pH environments
| Parameter | Value (Typical) | Standard Reference |
|---|---|---|
| Specific Gravity | 1.07 ± 0.02 | ASTM D1475 / BUET |
| Ash Content | < 1.5% | ASTM C114 / BUET |
| pH Value | 6–8 | BUET Standard |
| Chloride Content | < 0.2% | ASTM C494 / AASHTO M194 |
| IR Spectroscopy (FTIR) | Confirmed purity profile | ASTM E1252 / ISO 8142 / BUET |
| Dry Material Content | 12% ± 0.5% | EN 480-8 / BUET |
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