1. If the cement splashes on the car for less than 12 hours, the best treatment method is to soak it in water first, and then wash it slowly with car wash liquid and towel. This is slow, but it works well.
2. If the vehicle is splashed with cement for more than 12 hours, the cement has basically hardened. You can go to the drugstore to buy some acidic water, dip it in with a brush and apply it to the cement. Cement will be dissolved by acidic liquid and then washed off with water. If it is difficult to wash, it can be washed with hydrochloric acid, because cement is alkaline and hydrochloric acid is strong acid, which can only have a better effect on alkalinity. When smeared on cement, the cement will be dissolved by acid immediately, and the car body will not be damaged, and finally it can be cleaned.
3. If the cement area is large, you can pour it with gasoline. When the paint becomes soft, you can pull off the cement by hand.
4. Use a hair dryer to heat the part that touches the cement, and the cement can automatically fall off.
5. Spray white vinegar on the cement with a watering can, wait for 3-5 minutes, gently shovel it with the abandoned bank card, and the cement will fall off as a whole, and then rinse the painted surface sprayed with white vinegar with car wash solution. The recycling effect is very good, and there will be no cement residue.
Extended data
Matters needing attention in automobile maintenance
First, avoid running the engine for a long time in an unventilated garage. The exhaust gas from the engine contains carbon monoxide, which is an invisible and odorless poisonous gas. Long-term exposure to low-concentration carbon monoxide gas will cause headache, shortness of breath, nausea and vomiting, physical weakness and dizziness, psychological confusion and even brain damage.
Second, avoid sucking the tubing with your mouth. Gasoline is not only flammable and explosive, but also toxic. Especially leaded gasoline, will damage people's nervous system, digestive tract and kidneys. In addition, gasoline also contains high concentration of sulfide, because hydrogen sulfide is also toxic, if inhaled gasoline, it will lead to poisoning or death. In case of inhalation, force yourself to vomit and go to the hospital for treatment in time.
Third, avoid contact with carburetor cleaner. Carburetor cleaning agents mostly contain methyl chloride, aromatic hydrocarbons and ethanol, which are toxic to some extent, so it is very dangerous for these substances to be inhaled into the nose or splashed on the skin and eyes.
Fourth, avoid mechanical injury. The maintenance of a car is related to all aspects. During maintenance operations, obvious operation signs should be set to prevent others from being injured due to misoperation. When starting a car, pay attention to the gear of the transmission to prevent misoperation and personal injury. When working under the hood, others should be allowed to leave the cab to prevent the engine from suddenly turning or others operating the mechanism, resulting in accidental injuries. If you need to work under the car, you should set up obvious signs and cover the car with wood.
Fifth, avoid fire. When maintaining cars, it is often necessary to use flammable and explosive materials such as oil and cleaning agents. Don't forget the fire-fighting measures at this time, and prepare a fire extinguisher just in case. Don't smoke near the fuel tank and battery, because combustible gas escaping from the fuel tank and hydrogen escaping from the battery can be easily ignited.
Sixth, avoid burns. The engine that has just turned off must be handled carefully to prevent burns caused by relatively high temperatures in various parts of the engine (water tank, exhaust pipe, power steering fluid tank, spark plug, etc.). ). If the engine temperature is high, do not remove the water tank cover or loosen the drain switch to avoid burns.
7. Avoid damaging the car. Brake fluid is harmful to automobile paint film (including leather shoes paint film) and can quickly dissolve paint film. Brake fluid is harmful to eyes. If it spills into eyes, it must be washed with clear water immediately.
Eight, avoid paying attention to the protection of rotating parts and automobile road test. When the engine is running, be careful that your hands, clothes and tools must leave the rotating fan and fan drive belt (it is best to take off the ring, watch, tie and other items). During the test run, the conditions of all parts of the car should ensure safe parking and effective steering. Road test vehicles must have obvious test marks. During the test run, personnel must ride safely and on the special test run track.
Nine, avoid not paying attention to the cleanliness of the workplace. When closing the engine cover or other assembly covers, check whether tools, rags, removed parts and other items are forgotten, and then close them after confirmation.
References:
Automobile Maintenance-Baidu Encyclopedia