Physical and mechanical performance of green concrete

Industrialization and urbanization have contributed to the rapid development of the construction industry, resulting in large amounts of construction and demolition waste (CDW). At the same time, the growth of the global population consumes so much energy and produces a lot of CO₂ emissions. The CDW and latent heat technology are applied simultaneously to concrete, which not only enables CDW to be recycled, but also minimize the consumption of fossil energy during the operation of the building. It is also possible to achieve the development of economic cycles. In this study, the CDW that absorbs phase change materials (PCM) is mainly used to replace gravel in concrete, and the mechanical properties of new concrete with different CDW dosages are tested. The results showed that the addition of PCM increases the slump of concrete and decreases its compressive strength.