Developing supplementary cement alternatives from construction and demolition waste

气候变化，以及二氧化碳在其中的主导作用，都是全球公认的问题。许多领域都在提出缓解战略，建筑业也必须效仿。加拿大混凝土的使用量比任何其他建筑材料都要高，而相当大的二氧化碳排放量也是其副产品之一。全球研究已经研究了部分取代混凝土混合物的单一成分以减少环境足迹-大多数研究重点是用废物材料取代骨料。然而，由于波特兰水泥的使用占了混凝土碳足迹的大部分，替代胶结技术可能会极大地影响混凝土的可持续性。

Climate change, and carbon dioxide's (CO2) leading role in it, are globally acknowledged problems. Mitigation strategies are being proposed in many fields, and construction industries must follow suit. Canadian concrete use is higher than any other construction material, and considerable CO2 emissions are one by-product of this. Global studies have examined partially replacing singular components of concrete mixes to reduce the environmental footprint - with most focusing on replacing aggregates with waste materials. However, since the use of Portland cement accounts for the majority of concrete's carbon footprint, alternative cementing technologies can have a large potential to greatly impact the sustainability of concrete.