针对我国对沥青面层施工碳排放缺少适用评价方法以至于无法有效约束施工中 碳排放的问题，对我国多个地区共 13 条在建沥青路面开展碳排放调查与检测，建立能源 燃烧碳排放和沥青高温分解碳排放计算公式;提出沥青面层施工碳排放评价量化分级标 准，并运用主成分分析法确定碳减排关键工序，提出相应的碳减排措施． 结果表明:沥青面 层施工碳排放评价达到Ⅰ级、Ⅱ级、Ⅲ级和Ⅳ级的比率分别为 15%、31%、46% 和 8%;碳 减排关键工序为集料加热、沥青加热和沥青混合料碾压，集料加热和沥青加热工序的碳排 放主要受原材料加热能源类型影响，沥青混合料碾压工序的碳排放主要受沥青类型影响．

In view of the lack of applicable evaluation methods for the carbon emissions in asphalt surface construc- tion that results in the difficulty in constraining the carbon emission effectively，this paper investigates and detects the carbon emission of 13 asphalt pavements under construction in several areas in China，and establishes a formula to calculate the carbon emission due to the combustion of energy and the high-temperature decomposition of asphalt． Then，based on the carbon emission inventory，quantitative evaluation grading standards for carbon emission are put forward to establish an evaluation system，and the key process and measures of carbon reduction are determined by means of principal component analysis． The results show that the ratios of Grade Ⅰ (excellent)，Grade Ⅱ (good)，Grade Ⅲ (medium) and Grade Ⅳ (poor) are respectively 15%，31%，46% and 8%; and that the pivo- tal processes of carbon emission reduction include aggregate heating，asphalt heating and asphalt mixture rolling， and the carbon emission of the former two processes are mainly affected by the type of raw material’s heating ener- gy，while the carbon emission of asphalt mixture rolling is mainly affected by the type of asphalt．