Creating concrete paving stones requires a ready-made mold, concrete and a few mixing and pouring tools. Once the concrete is mixed, fill the mold, and after a wait, remove the dried concrete paving slab. Additional additives can be mixed into the concrete for coloring and strength.Know More
Create the concrete by mixing one part Portland cement with two parts sand and three parts of coarse aggregate. For thin molds less than 2 inches in thickness, the aggregate should be no larger than 0.25 inches in size. Use a wooden dowel or a hoe to mix the concrete in a large five-gallon bucket or in a wheelbarrow.
Mix any concrete dye into the concrete mix to achieve the desired color. Cover the surface of the mold with a mold release agent to help slip the paving slab free after dying. Sprinkle the powdered dye onto the bottom and edges of the mold to help create small variants of surface color. Add any strengtheners to the concrete while mixing it. If a textured surface is desired, then sprinkle the texture mix onto the mold along with the coloring.
Fill the mold with the concrete mix while shaking it from side-to-side or tapping the sides to release air bubbles. Allow the concrete to dry about 24 hours until firm. Turn the mold upside down on a clean, dry surface and then push the paving slab from the mold. Allow the concrete to set completely before using it.
To remove oil from concrete, mix an absorbent material with trisodium phosphate, or TSP, spread this mix onto the oil, and allow it to sit until dry. Repeat this process until the oil is gone.Full Answer >
To remove moss from concrete, saturate the moss-covered areas with undiluted vinegar, scrub with a hard-bristle brush and rinse with cold water; then sprinkle the concrete with a thin layer of baking soda. Allow the soda to rest for 24 hours before sweeping the area clean.Full Answer >
On average, it takes concrete roughly 3 days to dry or cure enough to handle pedestrian traffic, while vehicle traffic should stay clear of curing concrete for approximately 7 days. Despite this initial stage, concrete continues to harden for years, becoming stronger in the process.Full Answer >
To build a concrete block retaining wall, dig a trench, stack and secure the concrete blocks, and add capstones. This procedure takes about two days and requires a measuring tape, wooden planks, gravel, sand, concrete blocks, capstones, concrete adhesive, work gloves, metal pins, a hammer, a level, a rubber mallet and a shovel.Full Answer >