1 ratio. Add clean, clear water to a plastic bucket. Very carefully pour your acid in, being sure not to cause any spills or splashes. Don't use a metal container — acid can corrode many metals, leading to the possible destruction of the container.   Always pour acid into water. Never pour water into acid. If acid splashes back into your face, it can lead to disfiguring injuries or even blindness. From this point forward, you'll want to observe basic acid safety measures. Wear long sleeves, gloves, eye protection, and, if necessary, a face mask to protect against any fumes. For more information, see the safety section below. Most 3:1 or 4:1 mixtures of acid will be a suitable strength for etching concrete. However, before you pour your mixture on to the floor, it's a very wise idea to test it on a small, unimportant area of the concrete (like a spot that would normally be covered by furniture or tool boxes) to make sure it works. Pour about 1/2 cup directly on to the concrete. If it's strong enough, it should immediately begin to bubble and react. If you don't immediately see bubbles, your mixture probably isn't strong enough. Consider carefully adding more acid. Rather than pour all of the acid onto one spot of the floor, which can leave some of the acid spent by the time it reaches the far corners of the concrete, use a plastic sprayer or watering can. This ensures a more even application. Immediately after spraying, use a squeegee to manually distribute so that the whole floor receives an even coating. You may also use a floor machine to scrub the floor and distribute the acid. The floor needs to stay wet the entire time you are acid etching. Don't let the acid dry on the floor — if you need to, hose down areas that are drying out. When you're sure that your acid has been evenly applied, simply step away from the floor and wait for it to stop bubbling. Usually, this will take about 2-15 minutes. As the acid reacts with the floor, it will open up small, porous holes in the concrete, making it much more accepting of your intended sealant. Inspect the surface as the acid works. You want the acid to be reacting evenly and uniformly across the surface. If there are spots where the acid isn't reacting, this can be a sign that an unnoticed grease stain or sealant was present on the concrete. In this case, you may need to use a mechanical solution, like a grinder, to finish etching the concrete. Check your acid's label — many will require using a special neutralizing solution to stop the reaction of the acid, while some others may "time out" on their own. For acids that require a neutralizing solution, mix the neutralizer and distribute it throughout the floor according to the instructions on the packaging. Usually, you'll need to spray the neutralizer and scrub with a squeegee or use the floor machine to ensure the entire surface has been neutralized. For a general, all-purpose acid neutralizer, try mixing 1 cup of baking soda in 1 gallon (3.8 L) of water, then mixing until it dissolves. At this point, your concrete should have a clean, freshly-etched appearance. You're now ready to clean up. Use a broom or squeegee to gather the rinse water into one area, then suck it up with a shop vacuum. Read packaging instructions for how to properly dispose of your acid — you may have to add more baking soda to further neutralize it before pouring it down the drain. Alternatively, if you're working in a garage, you may be able to simply rinse your neutralized solution directly out of the garage and into a drain. Check your local regulations before doing this — you don't want to break the law or hurt the environment.
اخلط الماء والحمض بنسبة 3 أو 4:1. اختبر الخليط على مساحة صغيرة. استخدم عبوة رذاذ أو دلو سقاية لتوزيع الحمض. انتظر تفاعل الحمض مع الأرضية. قم بمعادلة السطح. اشطف الأرضية جيدًا.