How do you mix Exposed aggregate concrete?
Slabs should be cast monolithically with a mix as follows: portland cement, 1 part by weight, three-eighths inch and smaller pea gravel, 3.
What does Exposed aggregate mean?
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.
Do I need to seal exposed aggregate?
It helps hold the aggregate pebbles in place, reduces pitting and extends the life of exposed aggregate concrete. Depending on weather and traffic, when using an acrylic sealer exposed aggregate concrete should be sealed every 12 to 36 months.
Can exposed aggregate be repaired?
The cement in a concrete slab usually holds the surface layer of aggregate in an exposed aggregate slab securely in place. ... To restore the appearance of the slab, you must patch these damaged areas. An epoxy mix, combined with new aggregate, can provide the patch you need.
What is the best exposed aggregate sealer?
The two best types of exposed aggregate sealers are Silane-Siloxane water repellent sealers and acrylic sealers.
What do you seal exposed aggregate with?
Applying a transparent concrete sealer to an exposed aggregate surface can improve both its performance and appearance. These sealers-typically film-forming acrylic resins-can help protect against spalling, dusting, efflorescence, freeze-thaw damage, stains, deicing salts, and abrasion.
How long does exposed aggregate sealer take to dry?
Most concrete sealers dry fairly quickly and usually dry to touch within 1-3 hours. This is true of both penetrating and topical sealers. Penetrating sealers usually fully dry for traffic in less than 24 hours with topical sealers generally taking up to 48 hours to fully dry for traffic.
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