How to fix discolored concrete (Eco-friendly)

You may have noticed dark spots or discoloration in your outdoor concrete. This is known as mottled concrete or pinto concrete. Many things can cause this to happen such as the concrete to water ratio, hard troweled surfaces, improper/inadequate curing, maybe even calcium chloride additives. There is a simple, eco-friendly solution.

Lay Concrete

Laying concrete is one of the simplest things you can do to spruce up your curb appeal or backyard. Once you've read up on how to lay concrete, it's a relatively easy project that can be done in an afternoon. Determine the slope of the yard and adjust the perimeter of the slab accordingly. Use a level to ensure boards are straight. For example, if you were laying a 12-by-16-foot concrete patio off of a back door, your form would consist of two 12-foot 2-by-4s and one 16-foot 2-by-4. The amount needed depends on the size and scope of your project. This step also helps support the concrete and prevent it from cracking, especially if you’re layering on top of existing concrete. You'll probably need a wheelbarrow or other large trough for this. Before pouring the concrete, wet the ground thoroughly with a garden hose, especially if you’re working with bare dirt beneath your rebar or crushed stone layer. This prevents the ground from absorbing all of the concrete’s moisture, which encourages the slab to dry evenly. If you’re expecting inclement weather before the concrete has properly dried, cover it with a tarp to protect it.