07

2020.11

Concrete floor is a kind of integral ground that uses cement and stone particles as the main material. In the course of China's ground development, it has successively experienced such forms as terrazzo floor, fair-faced concrete floor, and colored wear-resistant floor. 1. Still fashionable terrazzo floor Terrazzo has the strength, wear resistance and durability of natural stone, and it is smooth,...

06

2020.11

Ancient Roman Concrete  3rd century BC The origin of concrete can be traced back to ancient Rome in the 3rd century BC. The ancient Romans accidentally discovered that natural volcanic ash added into natural sandstone and limestone and mixed them together to form mortar. After hardening, it had high strength and can be used as filling material for masonry vault and wall. In the historical rel...