1. When was concrete invented?
Concrete was invented in19th century and patented by 1865. The reason why concrete solidifies is that they use cement as a gelling agent, and its important sources are limestone and clay, which are ground and calcined. Therefore, when cement meets water, the solidification process is actually a compound reaction.
Second, which concrete manufacturers are there?
1, Zhongjianxi (Zhongjianxi Construction Co., Ltd.)
Brand birthplace: Chengdu, Sichuan Province
Brand establishment time: 20 13
2. Southern Cement (China Building Materials Corporation)
Brand birthplace: Shanghai
Brand establishment time: 20 1 1 year.
3. Shanghai Construction Engineering Group Co., Ltd
Brand birthplace: Shanghai
Brand establishment time: 1953
4. Jidong Cement (Beijing Jinyu Group Co., Ltd.)
Brand birthplace: Tangshan City, Hebei Province
Brand establishment time: 1979
5. China Resources Cement (China China Resources Limited)
Brand birthplace: China, Hong Kong, Macao and Taiwan.
Brand creation time: 2003
6. Yunnan Jiantou YCIH (Yunnan Construction Investment Holding Group Co., Ltd.)
Brand birthplace: Kunming, Yunnan Province
Brand establishment time: 20 16
7. Weihai (Shenzhen Weihai Group Co., Ltd.)
Brand birthplace: Shenzhen, Guangdong Province
Brand establishment time: 200 1 year
8. Huaxi Huashi (Sichuan Huaxi Group Co., Ltd.)
Brand birthplace: Chengdu, Sichuan Province
Brand establishment time: 1950
Bian Xiao Summary: The above is when the concrete was invented and which concrete manufacturers Bian Xiao shared for you. I believe that everyone will have a corresponding understanding after reading the above sharing. For more information, please keep an eye on Qijia. Com website. Bian Xiao will answer them one by one.