Use water from the bucket or tap water to wash the oiled area. Before treating the oil layer, wash off all dirt on the walkway near the oil. However, do not use high-pressure water tap to clean the area, as the oil may penetrate deeply into the substrate. advertisement

Method 2 of 3: Clean Small Oil Spots

1. 

   Pour detergent over the oil contaminated area. Slowly pour liquid or powder detergent over the oil stain until it completely covers the area. You can use one of the following common detergents: baking soda, vinegar, soap, dish soap, or detergent. Then wait 15-30 minutes for the detergent to seep into the oil if it is liquid detergent.

2. 

   
   
   Use hot water and a brush to scrub the stain. You can heat the water while you wait for the detergent to seep into the stain. Water the stain with hot water from a bucket or hose and rub it vigorously with a bristle brush or bristle brush. Rub continuously for one to two minutes and rinse with hot or plain water.
   • Repeat this wash procedure if the oil stain does not go away. Wait about a day to see if the oil reappears, which is common for oil stains, and if so, rinse it again.

3. 

   Mix up a topical mixture to remove small but stubborn oil stains. You should use the topical mixture for new oil stains, because the highly absorbent material can absorb the oil. However, this method is only suitable for small oil stains and difficult to wash, not applicable to large oil stains.
   • Make this mixture by mixing an absorbent substance such as sawdust or baking soda with a preparation solvent such as acetone, varnish or xylene solvent, to create a viscous mixture. These components will interact with each other to remove stains, the solvent is responsible for breaking the oil texture and the absorbent will suck it away.
   • Apply this mixture to the stain with a covering thickness of more than 5 mm.
   • Finally, cover a thin plastic sheet on the material and press the adhesive down to fix the cover position.
   • You can stomp on the plastic to let the mixture get into the cracks in the cement.
   • Wait a day for it to work, then remove the plastic sheet and remove the detergent mixture, rinse the area with a hose or a bucket of water.
   • If the walkway floor is covered with waterproof coating, it is not recommended to apply the method of bleaching, because the waterproofing layer will be damaged.

4. 

   
   
   Pour a few cans of Coca-Cola or Pepsi water over the oil. Then wait a day for the soda to penetrate the oil stain, which is the cheapest and easiest way to remove the oil from the cementitious substrate. A day later, use a hose or a bucket of water to wash off Coke and any remaining oil. If the stain is not over, you must find another way. advertisement

Method 3 of 3: Clean Large Oil Spots

1. 

   Put a sufficient amount of oil cleaner on the area you want to wash. This is a specialized product to clean the leaked oil from cars, and not damage the cement floor on the walkway. These products can be used immediately after opening the bottle, powerful and fast acting, can remove oil, grease or dirt ingrained on the substrate. Remember to read the user manuals and warning labels before using them.
   • Wait 1-3 minutes for detergent to penetrate the stain, or for the time directed by the manufacturer.
   • If the dirt has penetrated quite deeply, wait a bit longer, but don't wait until it dries.
   • For easy-to-wash stains, dilute one part detergent to five parts water.

2. 

   
   
   Scrub the stain vigorously with a metal or bristle brush. Wear chemical resistant gloves and scrub vigorously with a brush, wait 5-10 minutes, then wash off detergent with water. If you do not see it clean, continue rinsing as in the original procedure.
   • Repeat the washing procedure if the stain is not gone. Wait a day or so to see if the oil reappears. If so, rinse it the way it did before.

3. 

   Use a microbiological (not chemical) cleaner to clean oil stains. This type of product is environmentally friendly, costing about 200,000 VND per liter. Antimicrobial detergents are often used to clean oil spills on the sea. The single-cell microorganisms in the detergent will eat away the oil stains on the cement floor without leaving harmful intermediate products. You can buy bio-detergent manufacturer BioFuture with a branch in Vietnam