Time:2025-12-05 Browse: 66
Winter brings huge challenges to mining and demolition projects. We often receive calls from customers complaining: "Why is the expansive mortar not working?" or "Why does it take 24 hours to see a crack?"
Don't worry, the product is not broken. It's just cold.
As a professional manufacturer, Topking (Expandag) understands that chemical reaction speeds drop significantly when the temperature hits 0°C or below. To ensure your project keeps moving, you need to adjust your operation method. Here is our expert guide on how to use HSCA (High Soundless Cracking Agent) effectively in winter.
This is the most common mistake. You cannot use the same "Standard Type" (designed for 25°C) in freezing winter. It simply won't generate enough heat to expand.
At Topking, we formulate specific models for different temperature ranges. For winter operations, you MUST choose our Low-Temperature series:
Temperature Range: -5°C to 10°C
Reaction Speed: Enhanced chemical formula to generate heat faster.
In summer, we tell you to use cold water. But in winter, the rules change.
If the air temperature is below freezing, mixing HSCA with ice-cold water will delay the reaction by hours. We recommend using warm water (about 30°C - 40°C) to mix the powder. This gives the slurry a "kick-start" in energy.
⚠️ Caution: Do NOT use boiling water (>50°C), or it may cause a blowout (gun-shot) immediately!
Chemical reaction generates heat. A larger volume of slurry produces more heat, which accelerates the expansion.
In summer, you might drill 30mm or 32mm holes. In winter, we recommend increasing the hole diameter to 38mm - 45mm. To achieve this, make sure you are using high-quality Topking Tapered Button Bits (38mm or 40mm) and reliable H22 Drill Rods.
(Topking HSCA working perfectly in sub-zero temperatures)
This is a "pro tip" that many people ignore. After pouring the grout, the cold wind will steal the heat from the rocks.
Immediately after filling, cover the holes with straw mats, plastic tarps, or old sacks. This acts like a blanket, trapping the heat inside the rock and speeding up the cracking process by 20%-30%.
Even with the right methods, winter cracking is naturally slower than summer cracking.
Summer: Cracks appear in 4-8 hours.
Winter: Cracks may take 12-24 hours, or even 48 hours in extreme cold.
Do not look into the holes immediately if you don't see cracks. Give it time.
Topking manufactures professional-grade Expansive Mortar (Soundless Cracking Agent) for global clients. We customize the formula based on your local temperature.
Contact us today to get the best Stone Cracking Powder for your winter projects!
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