Research on carbon energy assessment of recycled aggregate reuse in asphalt pavement
YU Changyuan
LIU Xuelong
WANG Zhonglin
SUN Chen
CHENG Jikai
Abstract：To promote the low-carbon transformation of road engineering,based on the data of expansion and renovation projects,the carbon energy calculation method is adopted to quantify the carbon emissions and energy consumption in the production,transportation and mixing stages of asphalt pavement recycled aggregate(RAP),and to evaluate the carbon emission benefits and energy consumption benefits at each stage.The results show that the carbon dioxide emissions during the RAP production process are only 2.312 kg/t,which is 84.1%lower than that of natural aggregates.Application of RAP reduced the carbon emissions and energy consumption of ATB-25 mixture by 3.435 kg/t and 1.557 38 kg/t,respectively,and the plant-mixed cold recycled mixture by 8.771 kg/t and 3.949 06 kg/t,respectively.Research shows that RAP technology has obvious advantages in energy-saving and emission reduction and can provide a reference for the construction of green transportation.
Keywords：RAPcarbon emissionslow carbon road constructionenergy-saving and emission reduction
Publication Date：2025-12-25
Online Publishing Date：2026-01-26(First online date of this platform, not the publication date of the document)
Pages：5( 98-102 )