Calcium Chloride Concrete Accelerator
Calcium Chloride Concrete Accelerator: Proven Solution for Cold Weather and Fast-Track Projects
In the middle of a winter pour, nothing kills momentum like concrete that won't set. We've seen it too many times—delays stacking up, crews idle, and budgets ballooning. That's where calcium chloride steps in as the workhorse accelerator you've probably relied on before.
At TANG ZHI TECHNOLOGY (Hebei) Co., Ltd., we produce high-purity calcium chloride flakes and prills specifically formulated for concrete acceleration. Our product cuts initial set times by 30-60 minutes in cold conditions, letting you keep projects moving without the headaches. Sourced from our 140,000 sqm facility in Jinzhou, Hebei, it's battle-tested across highways, bridges, and commercial slabs worldwide.
Procurement managers know the drill: you need consistent quality, competitive bulk pricing, and reliable shipping to ports like Houston or LA. No fluff, just results. We've shipped container loads to US importers for years, handling everything from 25kg bags to 1MT jumbos.
Table of Contents
Common Procurement Pitfalls with Concrete Accelerators
Buying calcium chloride isn't just about price per ton. Get it wrong, and you're dealing with clumping in transit, inconsistent purity leading to variable set times, or worse—corrosion complaints down the line. I've talked to enough ops managers who switched suppliers after one bad batch.
Low-grade flake from unverified sources often carries excess moisture, turning into a mushy mess during unloading. Or purity dips below 94%, and your acceleration drops off. Then there's logistics: FCL shipments delayed by poor packing, hitting your project timeline.
US importers face extra scrutiny—ASTM C494 compliance, REACH regs for Europe reroutes, and DOT hazmat labeling. Skip these, and customs holds your container. We've helped clients avoid that by pre-checking specs against Type C requirements.
- Impurities causing efflorescence on finished slabs.
- Over-dosage risks from uneven particle size.
- Storage issues in humid warehouses leading to caking.
Short story: Vet your supplier's production process. Ask for third-party assay reports. It's not glamorous, but it saves rework costs.
Why Our Calcium Chloride Delivers Reliable Acceleration
Our CaCl2-77% min (flake form) is engineered for concrete mixes where speed matters. It accelerates hydration without the brittleness you get from some synthetics. In lab tests and field trials, it reliably shaves 1-2 hours off final set at 2% dosage.
Flakes dissolve fast—under 2 minutes in water—ensuring uniform distribution. No gritty residue. We've optimized for cold weather down to 0°C, where plain mixes crawl.
Practical edge: Low free alkali reduces efflorescence risks. And it's cost-effective—often 20-30% cheaper per equivalent performance than non-chloride options.
One engineer we supply noted: "Switched to your prills for a bridge deck pour. Hit strength specs 4 hours early, no corrosion flags."
Behind the Scenes: Our Production Muscle
Jinzhou base, 140,000 sqm site. Automated lines handle 40,000+ tons annually across accelerators and admixtures. World-class evaporators ensure 77%+ purity, no shortcuts.
ISO 9001, SGS audited. We pack in PE-lined PP bags, palletized for 20-25MT per 20' container. Export volume: 10,000 tons/year to Americas, steady.
Flexibility? OEM labeling, custom dosing blends with our PCE or RDP lines. Lead time: 15-20 days post-LC.
Not just volume—quality control at every step. Brine purification, flake drying to <1% moisture. Reduces your handling headaches.
Detailed Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| CaCl2 Content | 77% min (dry basis) | GB/T 26565-2011 |
| Alkali Chloride (NaCl) | 4% max | GB/T 26565-2011 |
| Water Insoluble | 0.1% max | GB/T 26565-2011 |
| Ca(OH)2 | 0.2% max | GB/T 26565-2011 |
| Fe | 15 ppm max | GB/T 26565-2011 |
| Heavy Metals (Pb) | 10 ppm max | GB/T 26565-2011 |
| Particle Size (Flake) | 1-5mm | - |
| Moisture | 1.0% max | GB/T 26565-2011 |
| Form | White Flakes/Prills | - |
| pH (5% sol) | 7-9 | - |
cement accelerator calcio para concreto accelerator in cement
Meets ASTM C494 Type C. Shelf life: 2 years in dry storage.
Real-World Applications That Demand Speed
Highway repairs in winter. Airport tarmacs needing overnight cures. Precast elements where demold time is tight. Our clients use it for slabs, beams, even shotcrete in tunnels.
Not for prestressed concrete—corrosion risk there. Stick to non-reinforced or epoxy-coated rebar setups. Pairs well with fly ash mixes for balanced strength gain.
- Cold weather concreting (0-10°C).
- Emergency repairs (roads, bridges).
- Precast production lines.
- Flooring in commercial builds.
Tip: At 1.5-2.5% bwoc (by weight of cement), expect 50-100% faster set.
Dosage, Mixing, and Field Tips
Dissolve flakes in mix water first—1-2kg per 100L. Add to drum last. Trial batches recommended; overdo it and shrinkage spikes.
In subzero? Preheat aggregates. Watch slump—accelerator shortens workability to 30-45 min.
Warning: Rinse forms post-pour to avoid chloride buildup. Test compressive strength at 1, 3, 7 days—hits milestones early but plateaus similar to plain mix.
Global Shipping: From Hebei to Your Dock
20' FCL: 22MT flakes. Incoterms: FOB Tianjin/Xingang. Rates to US West Coast: $2500-3500/container (market dependent).
20-25 day transit to LA/Long Beach. Hazmat Class 8, UN1759. We provide MSDS, COA per shipment.
Bulk breaks? LCL from $150/cbm. Warehousing partners in NJ, TX for distribution.
Payment: LC at sight or T/T 30/70. MOQ 20MT for best pricing.
Get Shipping QuoteCalcium Chloride vs. Alternatives
| Accelerator | Set Time Reduction | Cost/kg | Corrosion Risk | Best For |
|---|---|---|---|---|
| CaCl2 (Ours) | 50-100% | $0.25-0.35 | Medium | Cold weather, non-prestressed |
| Non-Chloride (e.g. Triethanolamine) | 30-50% | $1.50+ | Low | Prestressed concrete |
| Nitrate-based | 40-70% | $0.80-1.20 | Low-Medium | High-strength mixes |
CaCl2 wins on price/performance for most jobs. Swap only if steel corrosion is a dealbreaker.
Feedback from Procurement Pros
Mike R., Ops Manager, Texas Paving Co.
"Consistent flakes, no caking after ocean freight. Accelerated our winter shoulders perfectly. Pricing beat domestic by 25%."
Sarah L., Procurement Dir., Midwest Concrete Inc.
"SGS reports matched samples. 22MT arrived dry. Dosage spot-on for 4-hour sets. Will reorder."
Carlos M., Project Engineer, Florida Constructors.
"Used for bridge repairs. No efflorescence issues. Fast dissolve saved mixing time. Solid supplier."
John K., Importer, Cali Materials.
"OEM bags with our branding. Lead time 18 days. Quality held up in humid storage."
Frequently Asked Questions
Is your CaCl2 ASTM compliant?
Yes, Type C certified. Full test data available on request.
What's the minimum order?
20MT FCL, but LCL options for trials.
Dosage for cold pours?
2-2.5% bwoc below 5°C. Always test.
Corrosion concerns?
Use with coated rebar. Avoid prestressed apps.
Shelf life and storage?
2 years dry. Keep under cover.
About the Author
Li Wei, Export Manager at TANG ZHI TECHNOLOGY (Hebei) Co., Ltd.
15+ years in building chemicals export. Handled 500+ shipments to North America. Specializes in admixtures for ready-mix and precast.
Ready to Accelerate Your Next Project?
Contact us for specs, pricing, or samples. Phone/WhatsApp: +86-15032625168 | Email: admin@tangzhicellulose.com
Addr: Room 2308, Dongsheng Plaza 2, No. 508 Zhongshan East Road, Chang’an District, Shijiazhuang, Hebei, China
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