“Salt itself is not going to eat or affect the plastic layer of sealer,” Sullivan states. “(But) if you don't have good adhesion between sealer and concrete, when water gets underneath that sealer, it can cause the sealer to delaminate. If liquid water sits on most of these sealers long enough, it will get through.
Yes, it is safe to put salt in a concrete pool, there is just more to watch with concrete pools than with other pool types. If you don't have anything in between your water and your concrete, your concrete can erode faster, but it does not affect the quality of the water or your health.
The two main types of concrete sealers that are used to seal salt water pool decks are Silane-Silloxane water repellent sealers and acrylic sealers. Silane-Siloxane concrete sealers: Silane-Siloxane water repellents will seal the pool deck without changing the look or color of the concrete.
All concrete is not created equal. The types of concrete that are most susceptible to spalling damage is freshly poured concrete and low strength concrete. Newly poured concrete, which is still holding a high water content already, usually needs around 30 days to “harden off” before rock salts can be used.
The only way to stop this type of damage is with a water repellent sealer, such as a siliconate water repellent or a silane siloxane water repellent. Water repellent sealers such as these form a hydrophobic barrier that caused water and other liquids to bead off the surface.
The answer is yes, salt does indirectly damage your concrete driveways, patios and sidewalks. Bumps and potholes don't just appear due to regular wear and tear – salt damages concrete over time by causing corrosion to occur under the surface, leading to discolored, cracked and crumbling concrete.
Winter ice is dangerous, and salt is typically used to melt it away from driveways, walkways and steps. However, concrete can deteriorate if the salt is left in place for a long time. If you have exterior areas of concrete that have dimples or shallow cracks in them, the best solution is to apply concrete patch.
Magnesium chloride is a great choice! While magnesium chloride is more expensive than sodium chloride and calcium chloride, it is less likely to damage your concrete or your lawn. This type of salt only works in temperatures down to 0° F, which is better than sodium chloride but not quite as good as calcium chloride.
You should NOT use salt on a concrete driveway.
Salt can and will eat away at the surface of your concrete and asphalt.
In the United States, rock salt is the most common type we use, for everything from dining tables, to icy roads, to swimming pools. Rock salt is the purest type of pool salt you can buy, ranging from 95% to 99% sodium chloride.
In order to protect concrete from these deicing salts and the spalling, cracking and pitting effects it is best to seal the concrete. Silanes, siloxanes and silane/siloxane blends are the best types of sealers to battle harmful deicing salts due to their unique penetrating, hydrophobic properties.
When washing the salt away, remove all traces to prevent surface discoloration, especially if the concrete is integrally colored. Don't apply a sealer until the concrete surface and the small recesses left behind by the salt dry out completely.
Saltwater Damage to Decks
The issue is even more pressing when dealing with saltwater pools. The water that gets into the wood eventually dries, leaving salt granules inside the wood. This gradually warps the wood, giving the surface a fuzzy appearance known as salt-kill.
Remove snow and ice from your driveway and walkways. Pool salt effective at temperatures as low as 20 degrees Fahrenheit. Most inexpensive snow removal product.
Salt works in temperatures above 12 degrees F and is an inexpensive option for the task. Pros of using salt: Salt will melt ice and reduce slipperiness on your driveway and sidewalks. Salt will also be an aid in helping you completely remove ice from those areas.
In conclusion, mixing and curing concrete in seawater increases the early compressive strength, but the seawater has a negative effect on the compressive strength of concrete at ages over 28 days.
It's environmentally safe and doesn't cause damage to concrete.
Morton® Safe-T-Plus®: Formulated to be gentler on concrete surfaces and plants than rock salt, this ice melter can also reduce corrosion by 14 percent compared to plain salt.
Sodium chloride (commonly known as rock salt or table salt) is the safest de-icer for use on concrete.
Pitting, however, can be caused by improper finishing of the concrete, an inadequate concrete mix, improper use of an accelerator, or even old age. Pitting can sometimes cover large areas of the floor while spalling may be more localized.
What Is Concrete Resurfacing Made From? Simply put, concrete resurfacing is a thin cement based overlay that is mixed with special bonding agents. It is poured over existing concrete and adheres to create a beautiful and smooth new surface. As your new surface dries it gets stronger and more durable.
Adding salt to concrete (typically achieved by mixing with sea water) will cause the cured concrete to have higher compressive, tensile and flexural strengths (of probably the 1.4X scale that you mention). However, after a few months, salt crystal formation causes the concrete to become 8% weaker than regular concrete.