To clean a concrete floor, start by sweeping or vacuuming to remove any loose debris. Next, use a mop or scrub brush with a mixture of warm water and a mild detergent to scrub the floor. For tougher stains, you can use a mixture of water and vinegar or a specialized concrete cleaner. Rinse the floor thoroughly with clean water and allow it to dry completely before walking on it. Regular maintenance like sweeping and mopping can help keep your concrete floor clean and looking its best. **

To clean exposed aggregate concrete slabs, start by removing any debris or loose dirt with a broom or leaf blower. Next, use a pressure washer with a low-pressure nozzle to rinse the surface and remove any stubborn dirt or stains. For tougher stains, you can use a mixture of water and mild detergent or a specialized concrete cleaner. Scrub the surface with a stiff brush and then rinse thoroughly with clean water. Allow the surface to dry completely before sealing or applying any protective coatings. **

To clean exposed aggregate concrete pavers, start by removing any debris and loose dirt with a broom or leaf blower. Then, use a pressure washer with a low-pressure nozzle to gently wash the pavers, being careful not to damage the surface. For stubborn stains, you can use a mild detergent or a specialized concrete cleaner and scrub the affected areas with a brush. Finally, rinse the pavers thoroughly with clean water and allow them to dry completely before sealing them for added protection. **

To apply concrete on concrete, the existing surface must be clean, free of debris, and properly moistened. A bonding agent or primer should be applied to the existing concrete to ensure adhesion. The fresh concrete mix can then be poured or pumped onto the existing surface and spread evenly using a screed or trowel. It is important to properly cure the new concrete to prevent cracking and ensure a strong bond between the two layers. **

Yes, it is possible to pour new concrete over old concrete as long as the existing concrete is in good condition and properly prepared. The old concrete should be clean, free of any loose debris, and roughened to provide a good bonding surface for the new concrete. Additionally, a bonding agent may be used to ensure a strong bond between the old and new concrete. It is important to consult with a professional to assess the condition of the existing concrete and determine the best approach for pouring new concrete over it. **

Yes, you can clean concrete slabs with diluted hydrochloric acid, also known as muriatic acid. However, it is important to use caution and follow safety guidelines when using this strong acid. Always wear protective gear such as gloves, goggles, and a mask, and make sure to dilute the acid properly according to the manufacturer's instructions. Additionally, test a small, inconspicuous area first to ensure that the acid does not cause any damage to the concrete. **

For setting lawn edging stones, garden concrete would be the better option. Garden concrete is specifically designed for outdoor use and is more durable and weather-resistant than concrete screed. It also has better adhesion properties, making it more suitable for securing the edging stones in place. Additionally, garden concrete is often formulated to be more resistant to cracking and shifting, which is important for maintaining the integrity of the lawn edging. **

To clean old, dirty, and mossy concrete slabs, you can start by removing any debris and loose dirt using a broom or pressure washer. Next, mix a solution of water and a mild detergent or concrete cleaner and scrub the surface with a stiff brush to remove dirt and grime. For moss removal, you can use a solution of water and white vinegar or a commercial moss killer, applying it to the affected areas and letting it sit for a few hours before scrubbing or pressure washing. Finally, rinse the concrete thoroughly with clean water to remove any remaining cleaning solution. **