Can you pour concrete against a block wall?

A patio provides you with a way to enjoy time outside with your family and friends. When pouring a concrete slab against an existing wall, installing expansion strips between the patio and the wall can protect both structures from the effects of temperature changes on the concrete and the ground beneath it.

Can I pour concrete next to asphalt?

If, when pouring the concrete right up against the asphalt, you end up with parts of the concrete that taper or feather out to less than say about 1.5 -> 2.0 inches thick you will have trouble keeping the concrete in one piece. The thin parts are likely to fracture and break off.

Do you need an expansion joint between asphalt and concrete?

When the original concrete surface is used up, it needs to be taken out, reformed and new drive poured. Asphalt is a flexible pavement. The strength comes from a limestone aggregate base with 2-3” of an asphalt surface. Being flexible and able to expand and contract, asphalt does not require expansion joints.

How do you bond concrete to asphalt?

How to Put Concrete Over Asphalt

1. Fasten vertical rebar to asphalt to support concrete.
2. Drill and check the asphalt depth. If too thin, remove it.
3. Punch extra holes through asphalt for drainage.
4. Make keyways in asphalt for extra concrete adhesion.

What do you put between concrete and asphalt?

How to Fix a Gap Between Concrete and Asphalt

1. Dig out any loose material between the asphalt and concrete using a hand shovel and clear any loose debris.
2. Fill the gap with gravel, leaving 4 inches from the hole surface for the cold patch sealant.
3. Prime the gap by painting it with emulsified asphalt liquid.

What do you use between asphalt and concrete?

If the cracks are more than 2″ deep, fill them with coarse sand or crushed gravel first to create a base. Add gravel or sand into the gap until it reaches about 2” below the rim and spread evenly. Add the cold asphalt patch until it is slightly over the rim of the gap and tamp down until compact.

Can you pour concrete against concrete?

Many large slabs are split into several separate pours on different days. And you can’t just pour two slabs next to each other and have them meet the structural requirements of your project; you must join the two concrete slabs in the proper way.

How do you attach wood to a concrete slab?

Be sure that any wood of your house doesn’t end up in contact with the fill under the slab or the bare concrete. Just tack a strip of that expansion material right against the house and pour right to it.

Do I need to frame in under a concrete slab?

You don’t need to frame against the house. Be sure that any wood of your house doesn’t end up in contact with the fill under the slab or the bare concrete. Just tack a strip of that expansion material right against the house and pour right to it.

What is the best way to build a block wall?

Structurally this option is the best but it will be a lot of work to dig around and below the slab. digging and pouring concrete footings beneath the existing slab will provide the needed strength to support the block walls.

How do I add expansion material to my concrete slab?

Be sure that any wood of your house doesn’t end up in contact with the fill under the slab or the bare concrete. Just tack a strip of that expansion material right against the house and pour right to it. Thanks for contributing an answer to Home Improvement Stack Exchange! Please be sure to answer the question.