Test Construction of Low-Carbon Pavement Using Materials Containing Absorbed Carbon Dioxide

Abstract

 A demonstration test was conducted toward the practical application of a technology developed by Taiheiyo Cement Group to effectively utilize CO₂ separated and captured from the exhaust gases generated at cement factories. Specifications of pavement materials manufactured using the CO₂ utilization technology were determined, and test construction of the subgrade, base course and concrete paving was conducted. It was shown that the construction using the materials containing absorbed CO₂ could be carried out in the same way as with conventional materials, with the quality of the completed structure achieving the target values. With the specifications in the current study used, it was estimated that the material-related CO₂ emissions per square meter of pavement would be reduced by 15.4%.