Concrete Construction

During the 20th century, the US consumed 4.4 gigatons of cement. By contrast, during 2011-2013 China used 6.4 gigatons of cement; 45% more than the US used in 100 years; amazing! Why? China has 221 cities with over a million persons; the US just 35, China’s population is vastly larger than the US population, Chinese primarily live in multifamily structures, China lacks lumber, and building methods have changed.