Often asked: How To Make Exposed Aggregate Concrete?

How is exposed aggregate concrete made?

Exposed aggregate is a type of decorative concrete that is often created by removing the top layer of cement paste to reveal ( expose ) the aggregate in the concrete mix. The aggregate can also be placed in fresh concrete.

Is Exposed aggregate concrete expensive?

Exposed aggregate concrete is a special mixture which is poured in much the same way, but which later has its top surface removed in order to expose the aggregate underneath. Standard concrete paving also tends to be more affordable than exposed aggregate paving, costing only about $7-9 per square foot.

How do you grind concrete to expose aggregate?

The first step is to grind with 30/40 grit diamonds to expose the aggregate, then fill all the small air holes as described above (in 10 to 15 steps….) before a second grind with 60/80 grit or 80/100 grit diamonds. This will produce a smooth enough surface to coat with a sealer.

How soon can you wash exposed aggregate?

Depending on when you poured it and how wet the concrete was at that time, you generally need to wait roughly 10-24 hours for the core to harden. Do not wait to long to check, because the retarder and plastic cover can only keep the top from hardening for so long.

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Can you put exposed aggregate over concrete?

Can Exposed Aggregate Concrete be placed over existing concrete? A. Yes – provided certain practices are in place. It is best to discuss your particular situation with us at the time of choosing your mix.

Is Exposed aggregate cheaper than concrete?

Question: Is an exposed aggregate concrete driveway more expensive than a standard concrete driveway? Top Answer (90% of 44 votes): Yes. Explanation: Exposed aggregate is more expensive than standard aggregate because it requires more material expense and labor expense.

Does Exposed aggregate crack?

Will my new Exposed Aggregate product crack? Like all concrete products there is always some risk of cracks occurring. We cannot guarantee it won’t crack due to subsidence and other variables. Although we do everything we can to minimise the chance of cracking by cutting control joins and using expansion foam.

How long does Exposed aggregate last?

The average lifespan of an exposed aggregate driveway can be upwards of thirty years or more with the right care and preventative maintenance. Exposed aggregate’s lifespan can be affected by many factors, such as cracks in the surface that are not correctly filled or improper maintenance methods.

How do you fix bad Exposed aggregate concrete?

This uneven exposed aggregate surface needs to be treated with an acid wash. This is one of the few times I recommend an acid for a concrete repair. A strong acid wash should help even out the surface. Start with a muriatic acid diluted 1:1 with water.

How do you make Pebble concrete?

Lay decorative pebbles over the concrete with a shovel. Spread any small piles with a broom for even coverage. Lay a board over top and press the pebbles into the concrete. Wait about two hours so the surface can start to set.

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What is exposed aggregate patio?

Exposed aggregate is a type of concrete where a thin top layer of concrete is removed to expose the gravel or sand that’s always part of the mixture but usually hidden. Nowadays there are many types of decorative concrete, but exposed aggregate could be called the original. It’s been in use for over a hundred years.

Can you grind uneven concrete?

If you have an uneven concrete slab, you could replace it or cover it with leveling compound. But consider grinding it instead. Powerful grinding equipment is available at rental centers that cater to contractors. Grinding down leftover thin-set or other hard coatings.

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