混凝土道路路面的养生,在以往工程中一般均采用湿砂、草席或积水等方法。应用塑料薄膜养护混凝土可节约劳动力,在冰冻地区,可避免以往养护水流入基础而引起冻害,保证混凝土强度的均匀性,防止干裂现象产生,在干旱地区可节约用水,每平方米混凝土的塑料薄膜约合0.38元。但用塑料薄膜养生的混凝土强度,一般偏低10～15%左右。 For the health of concrete pavement, wet sand, straw mats, or stagnant water are commonly used in previous projects. The use of plastic film to protect concrete can save labor. In freezing areas, it can avoid the freezing of conventional maintenance water into the foundation, ensure the uniformity of concrete strength, prevent dry cracking, and save water in arid areas, plastic film per square meter of concrete. About 0.38 yuan. However, the strength of concrete reinforced with plastic film is generally about 10 to 15% lower.