CLD	Causal Loop Diagram
CSI	Cement Sustainability Initiative
GHGs	Greenhouse Gases
Gt	Gigaton
IEA	International Energy Agency
IPCC	Intergovernmental Panel on Climate Change
OPC	Ordinary portland cement concrete
SCMs	Supplementary Cementitious Materials
SD	System Dynamics
UHPC	Ultrahigh Performance Concrete
UN	United Nations
WBCSD	World Business Council for Sustainable Development