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Etching of the old concrete with muriatic acid is sometimes done to slightly roughen the surface. There are also commercially available bonding agents available at concrete suppliers and at some home centers.

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16y ago

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What is PTA bonding for concrete?

PTA bonding for concrete refers to a method of bonding new concrete to existing concrete by using polyurethane methacrylate adhesive. This type of bonding is commonly used in concrete repair and construction projects to create a strong and durable bond between old and new concrete surfaces.


How do you increase an existing concrete slabs thickness?

You must form on top of the existing slab and drill in anchors to join the new concrete to the old this is called a cap


Can you put more concrete on top of old concrete?

Yes, if the base is stable the new layer will bond and create a new, fresh surface.An unstable base will give bad results. You should pressure wash the old concrete to get rid of loose and spalling concrete and you should use a bonding agent to serve as a primer to get the new layer to bond well to the old.Obviously, if the new concrete is laid over concrete that is subsiding because of a sinking foundation, the new concrete will crack. You need to stabilize the old concrete before pouring new over it.If you put new over old, it needs to be at least a couple inches thick else it will not cure properly. If you simply want to improve the surface, there are special self-levelling concrete mixes that can be poured thinner and still be strong. Take a look at the link below for a good how-to.


How can I fix a broken concrete slab?

To fix a broken concrete slab, you can follow these steps: Clean the area thoroughly to remove any debris or loose concrete. Use a chisel and hammer to break away any loose or damaged concrete. Apply a concrete bonding agent to the surface to help the new concrete adhere to the old. Mix and pour a new batch of concrete into the damaged area, making sure it is level with the surrounding slab. Smooth the surface with a trowel and allow it to cure according to the manufacturer's instructions.


How can I successfully create DIY concrete floors in my home?

To successfully create DIY concrete floors in your home, follow these steps: Prepare the surface by cleaning and leveling it. Apply a concrete bonding agent to help the new concrete adhere to the old surface. Mix the concrete according to the instructions and pour it onto the floor. Use a trowel to spread and level the concrete. Allow the concrete to cure for the recommended time before walking on it. Apply a sealant to protect the concrete and give it a finished look.


Why should defective concrete be immediately repaired on new or old concrete?

to prevent further damage


How can I effectively repair concrete steps that have been damaged or deteriorated over time?

To effectively repair damaged or deteriorated concrete steps, follow these steps: Clean the surface thoroughly to remove any debris or loose material. Use a concrete patching compound to fill in any cracks or holes. Apply a bonding agent to help the new concrete adhere to the old surface. Mix and apply a new layer of concrete to the steps, smoothing it out with a trowel. Allow the concrete to cure according to the manufacturer's instructions before using the steps again.


How to resurface a concrete patio effectively?

To resurface a concrete patio effectively, follow these steps: Clean the surface thoroughly to remove dirt and debris. Repair any cracks or damage with a concrete patching compound. Apply a bonding agent to help the new surface adhere to the old concrete. Mix and apply a concrete resurfacer according to the manufacturer's instructions. Smooth and level the resurfacer with a trowel or squeegee. Allow the resurfacer to cure completely before using the patio.


How can I resurface a concrete patio effectively?

To resurface a concrete patio effectively, follow these steps: Clean the surface thoroughly to remove dirt and debris. Repair any cracks or damage with a concrete patching compound. Apply a bonding agent to help the new surface adhere to the old concrete. Mix and apply a concrete resurfacer according to the manufacturer's instructions. Smooth and level the resurfacer with a trowel or squeegee. Allow the resurfacer to cure properly before using the patio.


How can I resurface a concrete porch effectively?

To resurface a concrete porch effectively, follow these steps: Clean the surface thoroughly to remove dirt and debris. Repair any cracks or damage with a concrete patching compound. Apply a bonding agent to help the new surface adhere to the old concrete. Mix and apply a concrete resurfacer according to the manufacturer's instructions. Smooth and level the surface with a trowel or squeegee. Allow the resurfacer to cure properly before using the porch.


How can I resurface concrete steps effectively?

To resurface concrete steps effectively, follow these steps: Clean the steps thoroughly to remove dirt and debris. Repair any cracks or damage with a concrete patching compound. Apply a bonding agent to help the new concrete adhere to the old surface. Mix and apply a concrete resurfacer according to the manufacturer's instructions. Smooth and level the resurfacer with a trowel. Allow the resurfacer to cure properly before using the steps.


How can I effectively resurface my concrete garage floor?

To effectively resurface your concrete garage floor, you can follow these steps: Clean the surface thoroughly to remove any dirt, oil, or debris. Repair any cracks or damage in the concrete. Apply a concrete bonding agent to help the new surface adhere to the old concrete. Mix and apply a concrete resurfacer according to the manufacturer's instructions. Smooth and level the resurfacer with a trowel or squeegee. Allow the resurfacer to cure completely before using the garage.