On Wednesday, September 14 ,2016,  the national organization for standardization in Cuba approved the new standard for LC3 cements in the Technical Committee TC 22. Soon, it will be possible to manufacture and market cement in which 50% of clinker can be substituted by the limestone and calcined clays which meets specific performance criteria. These criteria were studied and defined by a panel of experts to develop a cement that meets the requirememnts of safety and quality. In the near future, LC3 will be available within a legal framework for everyone to build stronger and more environmentally friendly homes.