Why Is Rock Salt Better for Snow Removal?
Winter brings joy to some, and for others, it’s a sleepless nightmare. We all know that the task of clearing snow from sidewalks or driveways is challenging. This is where rock salt comes into play. But what’s so special about rock salt? Why do we commonly use it, and why do municipalities and other homeowners seek alternatives? We will take a deep dive into the topic and understand the reasons behind why rock is the most common solution for de-icing in the winter season.
What Is Rock Salt?
Composition of Rock Salt
Rock salt, also known as halite, is nothing but sodium chloride, which is a natural mineral form. Rock salt is quite different from regular table salt. It comes in a crystal form, making it a perfect choice for use in outdoor applications.
How Rock Salt is Mined
Rock salt is not an artificial product. It is a naturally formed mineral generally extracted from underground deposits. These deposits are formed millions of years ago when seas evaporated, leaving behind the rock salt. Today, major mining companies utilize this advantage by digging into the ground to collect the salt, crushing it, and shipping it in large quantities.
The Science Behind Rock Salt in Snow Removal
Freezing Point Depression
Rock salt works completely on the concept of freezing point depression. In simpler terms, when rock salt is spread over ice or snow, it comes in contact with the surface and forms brine that lowers the freezing point. Rather than freezing at 0°C, the salty solution will remain liquid even at lower temperatures and effectively melts the ice.
Effective Snow Melting
When snow is covered on the pavement, it forms a stubborn layer of ice. So, when rock salt is sprinkled on it, the bonds between the ice molecules are broken down, and the ice melts. The melted ice will later be swept or drained away. It’s similar to giving your driveway an energy boost to combat the winter chill.
Rock Salt vs. Other Deicing Methods
Rock Salt vs. Calcium Chloride
Calcium chloride is one alternative that works well at lower temperatures when compared to rock salt. But it is comparatively more expensive than rock salt and generally not recommended for residential use.
Rock Salt vs. Magnesium Chloride
Magnesium chloride is an eco-friendly alternative and works gently on surfaces. However, if you are using it for larger areas, it becomes more expensive.
Rock Salt vs. Sand
When compared to other alternatives, salt doesn’t melt ice; rather, it provides traction. Sand is used when rock salt loses its effectiveness. If you are using sand, it needs to be cleaned up later, which is a labour-intensive process.
Advantages of Using Rock Salt
Cost Effectiveness
When compared to other options, rock salt is the most cost-effective deicer. It is affordable and widely available, making it a preferred choice for snow removal, especially in large-scale operations.
Availability and Accessibility
You can get rock salt in any store, from hardware to industrial suppliers, during the winter. You don’t need any special equipment or a permit to use it.
Ease of Application
Rock salt spreading requires no special skills. Just sprinkle it over an icy surface, and it starts to work immediately. There is no need for fancy equipment to spread salt, unless you are dealing with highways.
Cost Comparison: Rock Salt vs. Alternatives
The cost of rock salt ranges from $50 to $80 per ton, but if you choose calcium chloride, the price varies significantly more, ranging from $300 to $500 per ton. The eco-friendly alternatives, such as beet juice, fall in between. But if you are a homeowner, rock salt is the best option for you.
How Climate Affects Rock Salt’s Efficiency
The effectiveness of the rock salt will be at best above 15°F (-9°C). Below those temperatures, you should opt for alternative options, such as calcium chloride. That is the reason why people living in severely cold regions combine salts for year-round effectiveness.
The Future of Snow Removal Technology
Due to advancements in technology, various innovations, such as eco-friendly chemical blends, smart snow plows, and heated pavements, are being implemented. However, rock salt remains the top choice due to its low cost, effectiveness, and reliability.
Conclusion
If you find a rock salt bag lying in your basement, cherish its effectiveness in combating winter challenges. It is a proven solution that is affordable and effective when used properly. Remember to use it and store it wisely, and protect the environment.
If you are looking for a reliable, affordable, and eco-friendly way for snow and ice management, we’ve got you covered. At Canada Salt Group Ltd., we specialize in high-quality bulk road salt and other de-icing solutions across Canada. We ensure that you are in the right place for your winter road maintenance. Contact us for a free quote.
