Readers ask: How To Pour Exposed Aggregate Concrete?

Do you vibrate exposed aggregate concrete?

It is recommended that BGC’s 7mm exposed aggregate mixes use a maximum 3mm surface retarder. Vibrators will provide better compaction, removing voids. Do not drag vibrators horizontally through the concrete surface, it will leave trails in the concrete, void of aggregate resulting in an inconsistent finish.

Is Exposed aggregate more expensive than concrete?

All in all, exposed aggregate is more cost -effective. It looks as great today as it will in the coming years. Plus, it is less expensive than stamped concrete.

How long does it take for exposed aggregate to dry?

After exposure of aggregates, the surface is cured for a minimum period depending on the location and application. A minimum of 7 days curing is recommended for increased concrete strength and improved bonding of the aggregates into the surface.

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How long before you can walk on exposed aggregate?

Don’t try to scrape away the concrete until the aggregate holds firm. If weather conditions are right, this stage should occur in about 1-1/2 hours, but it could take up to 6 hours. To test, lay a board on the surface and kneel on the board; if the board leaves marks, allow more time.

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.

Can you put exposed aggregate over existing concrete?

Can exposed aggregate be applied over existing concrete? It may require some grinding of the existing concrete so it provides a bumpy surface to which the new layer will adhere, and you may be limited as to the aggregate choices so that they adhere to a top layer of concrete.

Is Exposed aggregate worth it?

While still incredibly durable, exposed aggregate is more prone to damage than standard concrete and therefore needs to be sealed more often. However, if you really love the look of exposed aggregate, then you’ll likely find these few extra maintenance tasks to be worth the effort.

Is Exposed aggregate concrete durable?

Exposed aggregate concrete is not only used for its aesthetic appeal, but it is also durable and skid- resistant, helping to make walkways, driveways, pool decks, and patios safer.

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How often should you seal exposed aggregate concrete?

Generally speaking, aggregate driveways need to be re-sealed once every two years. For commercial premises which see a lot of traffic, more frequent re- sealing may be required.

Can you pressure wash exposed aggregate?

Use a high pressure washer with hot water and a commercial-grade degreaser to eliminate oil stains. Exposed aggregate cleaners can be applied on tire marks before rinsing it off with hot water. Use a stiff-bristled brush to remove extra-stubborn stains prior to rinsing.

Is it OK if it rains after pouring concrete?

Heavy rain can cause problems to freshly poured concrete as it can wash out some of the cement from the mix. This can weaken the surface of the concrete, making it a softer consistency and decreasing the strength of the concrete.

Can I drive on concrete after 3 days?

Concrete professionals suggest waiting at least seven days after the crew is finished before parking or driving your personal vehicle(s) on your new concrete. The reason for this is because one week is the time period it takes for your new concrete to achieve 90% of its full potential strength.

How long does 4 inches of concrete take to cure?

When waiting for concrete to dry, keep these timeframes in mind: 24 to 48 hours – after inital set, forms can be removed and people can walk on the surface. 7 days – after partial curing, traffic from vehicles and equipment is okay. 28 days – at this point, the concrete should be fully cured.

How strong is concrete after 24 hours?

Your concrete should be solid enough to walk on, without leaving footprints, after anything from 24 to 48 hours. By seven days, your concrete should be cured to at least 70 percent of its full strength.

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How much does an exposed aggregate driveway cost?

Exposed aggregate concrete is a popular decorative effect achieved by adding stone to concrete, which is a popular and durable finish for driveways, patios and pathways. You can expect an exposed aggregate finish to cost anywhere from $100 to $150 per square metre.

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