Old or new cracks will disappear by using concrete coatings or sealers. Usually, these materials contain epoxy coatings enhanced with acrylic-based layers for outdoor use.
Sparkle Grain is recommended where you want a decorative, hard, nonslip surface. The glitzy grit is designed for light to heavy usage on floors, patios, walkways, driveways, steps and ramps in places from homes, shopping centers and wineries to museums, schools and stores.
If you need to get rid of rust from concrete, your best bet is to use some WD-40 Multi-Use Product, and some elbow grease. WD-40 is specially formulated to be a penetrant, so when you spray it on a rusted surface, it gets to work right away by getting under the rust.
Baking Soda: Creates voids and pinholes in the surface. It acts as an accelerator. Veining Compound: Absorbs water from the mix and creates a colored line in the concrete. Spritzing with water activates cement and makes the vein more solid.
Vinegar is a natural and safe alternative to cleaning concrete with harsh chemicals. In the case of algae and mold, it does a better job than bleach, and it is better in the long term for killing these infestations. Oftentimes, vinegar can be found in your home or garage.
Cleansing — For mild discoloration, repeatedly flushing the hardened concrete surface with hot water, then scrubbing with a stiff brush, can reduce or remove discolored blotches. Acid treatment — If the discoloration is more severe, a mild acid solution of 1-3% muriatic acid to water can help remove the discoloration.
If you don't have tea tree oil or don't want to use it, this homemade concrete cleaner will still be effective due to the addition of baking soda and peroxide. They work together as an anti-fungal, but also whiten and remove the stains from mildew.
Use Epoxy to Get a Silky Smooth Surface with High Sheen
You can also apply an epoxy resin coating to the surface of the concrete.
Scientists at the University of Waikato in New Zealand have developed a protocol called solid-state fermentation that uses nanobiotechnology to make a concrete that regenerates itself to repair cracks as they develop.
Coca Cola contains citric acid that breaks down the molecules in motor oil and unsightly grease, allowing the stains to be easily washed away. With the aid of a stiff brush, Coke can remove motor oil, grease and even rust stains from concrete surfaces like your garage floor with ease.
White vinegar and a little scrubbing with a brush is a very effective, eco-friendly way to remove rust stains from concrete—even those that are decades old. Pour the white vinegar directly onto the stain, allow the liquid to penetrate the area for 20 minutes, and scrub with a stiff-bristled brush.
Etching – Vinegar's ability to dissolve CaCO3 will dull your marble, travertine, concrete and terrazzo surfaces. It may “clean” the surface but it is also dissolving pits into the finish and effectively dulling it.
Vinegar or baking soda: These natural cleaners work well to clean cement patios with stubborn charcoal or rust spots. Mix equal parts vinegar and water, scrub the patio with the mixture, then give it a good rinse. If stains don't dissolve, try undiluted vinegar.
Polyethylene glycols, chlorides, nitrates, and metal fluorides are usually used to make these kinds of admixtures. These substances can be added to a concrete mix to shorten the time it takes to bond and set.
The most common acids used to clean concrete and bricks are hydrochloric acid (muriatic) or phosphoric acid. For many years it has been the standard cleaning method to prepare concrete for coatings installations, to remove stains of any type from concrete and to remove concrete slurry or efflorescence from bricks.