Overview of Environmentally Considered Concrete and its Future Prospects
By M. Hisada, S. Miyazato and N. Sakata
Concrete Journal, Vol.60, No.10, Oct. 2022
- Synopsis
- Concrete is regarded as a material that places a burden on the global environment owing to the large amount of CO2 that is emitted during the manufacturing process of cement, one of its constituent materials. Recently, however, various types of less environmentally burdensome concrete have been developed and put into practical use, ranging from concrete that reduces CO2 emissions to concrete that offsets CO2 emissions through absorption to such an extent that it becomes carbon negative. Such types of concrete are called environmentally considerate concrete. This paper outlines the mechanism by which concrete emits CO2, classifies environmentally considerate concrete according to differences in characteristics, and explains each technology. Further, it discusses future prospects based on the evaluation of initiatives related to CO2 reduction.
- Keywords:
- Environmentally considerate concrete, Calcium carbonate, CO2 absorbing concrete, CCU materials, Carbon neutral, Carbon negative, i-Construction
