If you have a broken exposed aggregate, there are several steps you can take to repair it.
The first step is to assess the damage and to make sure that the exposed aggregate is structurally sound. If the aggregate has broken away from the base, you may need to use a chisel to break the old aggregate off before you can begin repairs.
Once the area has been prepped, you can mix a new concrete and patch mixture to use to repair the exposed aggregate. Make sure to add an acrylic admixture and corrosion inhibitor to improve the adhesion, durability and longevity of the repair.
Use a trowel to apply the patching material about one inch thick, then use a metal float to smooth out the surface.
Next, sprinkle the exposed aggregate stones onto the wet concrete patch, adding enough so that each one is slightly embedded into the patch. The stones should just break the surface of the concrete and be slightly recessed.
Use the trowel to pack the stones down firmly and make sure they are all sitting level before leaving the patch to dry.
After the patch is dry, it may be necessary to give it a light sand and to blend the colors of the new patching material in with the existing aggregate. When finished, seal the exposed aggregate with a concrete sealer to add a protective layer and prevent any future damage due to weather or surface wear.
This can help to extend the life of your exposed aggregate surface.
Can exposed aggregate concrete be resurfaced?
Yes, exposed aggregate concrete can be resurfaced. Exposed aggregate is a type of concrete finish that exposes the aggregate materials, like stones, within the surface of the concrete. Resurfacing involves pouring a thin layer of concrete, usually about one-eighth of an inch thick, over the existing exposed aggregate and smoothing it even.
The thin layer will bond with the existing concrete and give a uniform look to the surface. The color and texture of exposed aggregate can be easily replicated with resurfaced concrete. Resurfacing is a more cost-effective and time-efficient way to repair exposed aggregate concrete surfaces and keep them looking great.
It is also more durable than other options, such as sealers or paint. Properly done, resurfacing can extend the life of exposed aggregate concrete for many years.
Is Exposed aggregate more expensive than concrete?
When comparing the cost of exposed aggregate and concrete installation, the answer is that it depends. Exposed aggregate can be more expensive than concrete depending on the type of aggregate used, as well as the installation process.
It is more labor intensive because the stones need to be exposed, which requires additional time, materials, and machinery. Other factors that come into play include the contractor’s skills and location.
In some regions, the cost of the aggregate can increase the total cost significantly. Also, some projects require a denser aggregate, which can add to the cost. Generally speaking, however, exposed aggregate is not necessarily more expensive than concrete, and it can offer a unique and attractive look that can be worth the added cost.
How can you make rough concrete smooth?
Smoothing rough concrete is possible but it requires some effort and materials. Depending on the desired level of smoothness, different techniques can be used. For example, grinding is usually the most effective way to make rough concrete smooth.
This involves using diamond embedded blades or abrasive discs to grind down the surface. Alternatively, high-pressure water jetting is another option for smoothening concrete as it blasts away surface impurities and irregularities.
You can also use a concrete caulk or compound to fill in minor irregularities, and then sand it down for a smooth finish. Finally, sealers can be applied afterwards to provide an extra layer of protection, gloss, and sheen while also improving the concrete’s overall texture.
Why does my concrete look rocky?
If your concrete has a rocky appearance, it may be due to several factors. Poor compaction of the soil during the pour can cause gaps and air pockets between aggregates and the cement, resulting in a rough, bumpy look.
Improperly mixed cement can also be partially responsible. If the mix contains too much sand or not enough aggregate, it can lead to an uneven surface with large chunks of cement sticking up. In addition, if the surface is not adequately smoothed after pouring it can cause large ridges and a rock-like texture.
Finally, if the concrete is exposed to colder temperatures or exposed to the elements too soon after pouring, the curing process can be interrupted leading to a bumpy texture.
Can you resurface crumbling concrete?
Yes, you can resurface crumbling concrete. The process involves cleaning the existing concrete surface, filling any cracks and holes with a cement-based material and then applying a polymer-modified concrete overlay.
This overlay gives the concrete a smooth, new surface that can be painted, sealed, or stamped. If possible, it’s best to consult a professional concrete contractor to ensure a quality resurfacing job that will last for many years.
What is the difference between scaling and spalling?
Scaling and spalling are two terms related to the degradation of concrete. Scaling is the process of the surface of the concrete cracking, flaking, and/or chipping away. It is caused by weathering, salt crystallisation, and deicing chemicals.
Spalling, on the other hand, is the process of cracking of concrete. This is caused by freeze-thaw cycles which cause water in the concrete to expand leading to deterioration. Spalling is typically found in deeper layers of the concrete and can happen beyond the visible surface.
Scaling and spalling can accelerate the overall deterioration of the concrete structure.
What is the product to resurface concrete?
Ranging from specialized rubbers and polymers to paints, mortars, and coatings. All of these products are designed to provide a protective layer that can be used to help restore and improve the appearance of concrete surfaces.
Rubberized concrete resurfacing products are skid-resistant and often mixed with colored chips or stones to provide a non-slip, attractive finish. These products can be used to restore old and damaged concrete surfaces to create a smoother, more uniform appearance.
The rubber and polymer coatings are available in a variety of standard colors or can be made to order.
Concrete paints and coatings are a cost-effective way to change the look of existing concrete surfaces. Some paints and coatings are designed to provide an extra layer of durability and protection to ensure the concrete provides long-lasting performance.
These products can be applied in colors, tints, and shades to match existing colors, or to create a whole new look for the concrete.
Finally, cementitious mortars, plasters, and micro-toppings can be used to resurface and repair existing concrete surfaces, providing a variety of colors, textures, and levels of porosity to create almost any look desired.
Methods such as hand troweling, spraying, and stamping can be employed to achieve the desired surface properties.
Regardless of the method chosen, the key factor in properly resurfacing concrete is to properly prepare the surface before any products are applied — this includes cleaning, protecting, and priming the concrete to achieve best results.
Does concrete resurfacing last?
Yes, concrete resurfacing can last for many years depending on the climate you live in and the quality of preparation and application of the materials used. Generally, concrete resurfacing should last for at least three to five years provided that the traffic on the area is not too intense.
But if the traffic on the surface is quite high, it is better to expect a lifespan of a year or two. Proper preparation of the surface, using the right materials, and applying the right sealant can also affect its durability too.
Moreover, regular cleaning should help extend the lifespan of your resurfaced concrete.
How do you repair a crumbling concrete garage floor?
To repair a crumbling garage floor, you will need to first determine the cause of the crumbling concrete. This may be due to a poor original installation, excessive moisture, exposure to salt or exposure to chemicals.
Once you determine the cause, you can repair the area by completely removing the damaged concrete, making sure to also remove any loose aggregate from the area. Once the area is prepped, you will need to mix enough concrete repair material and create a patch, making sure to go at least two inches thick.
After the patch is laid, you can use a trowel to smooth out the patch, making sure to feather the edges of the patch in order to blend it in with the existing concrete. You may also need to us a concrete sealer in order to protect the newly patched area from weather and other conditions, depending on the area you are patching.
Once all these steps are complete, your garage floor should be as good as new!.
