The cement floor can be solidified for 7 days in spring and autumn, and can be driven for more than 4 days in summer. The phenomenon of cement coagulation is related to many factors. It is generally believed that the main reason is that the high temperature in cement grinding dehydrates gypsum dihydrate into gypsum hemihydrate.

Cement concrete pavement refers to the pavement with cement concrete as the main material, which is called concrete pavement for short.

A brief history of development

1868, Scotland paved the concrete pavement for the first time on the road from Furness to a freight yard. 19 was introduced to the United States and Germany at the end of this year. In the early years, most concrete pavements used single-layer cast-in-place plain concrete, and a few used double-layer or reinforced concrete.

In the 1920s, Europe and America developed a large number of concrete pavements in expressway, urban roads and airport runways, and the United States also began to try to lay precast concrete pavements and continuously reinforced concrete pavements. With regard to prestressed concrete pavement, the United States and France started trial paving in the 1930s and the mid-40s respectively. In the early 1970s, the United States and the Netherlands began to try to lay steel fiber reinforced concrete pavement.