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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2025, Vol. 44 ›› Issue (1): 1-7.DOI: 10.3969/j.issn.1674-0696.2025.01.01

• 交通基础设施工程 •    

基于生产过程实测的土工合成材料碳排放因子

徐超1,2，陈铭铭1，杨阳1,2，李格烨1   

  1. (1. 同济大学 地下建筑与工程系，上海 200092; 2. 同济大学 岩土及地下工程教育部重点实验室，上海 200092)
  • 收稿日期:2024-07-19 修回日期:2024-11-25 发布日期:2025-01-20
  • 作者简介:徐超(1965—)，男，河南临颍人，教授、博士生导师,主要从事土工合成材料和地基处理方面的研究。E-mail:c_axu@tongji.edu.cn 通信作者：杨阳（1988—），女,陕西西安人，高级工程师，主要从事岩土体测试和加筋土结构试验研究方面的工作。E-mail:2011yang@tongji.edu.cn
  • 基金资助:
    国家自然科学基金项目（42172297）；安徽省交通运输重点科技项目(2022-KJQDd008)

Measured Carbon Emission Factors of Geosynthetics Based on Production Processes

XU Chao1,2, CHEN Mingming1, YANG Yang1,2, LI Geye1   

  1. (1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China)
  • Received:2024-07-19 Revised:2024-11-25 Published:2025-01-20

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摘要： 作为一种新型建筑材料，土工合成材料为诸多岩土工程问题提供了新的解决方案，在节能减排方面具有明显优势。但是，目前在进行土工合成材料工程的碳足迹测算和评价时，很少采用土工合成材料产品实测的碳排放因子，而是基于相关数据库和文献进行间接估算。这种做法不能真实反映土工合成材料产品的隐含碳，也对碳足迹测试结果的准确性和可信度造成了影响。针对土工织物、土工膜和土工格栅3类使用量最大的土工合成材料产品，对3家国内生产企业进行实地调研，采用生命周期的过程分析法，测定了不同规格产品从原料到工厂大门的碳排放因子。结果表明：塑料拉伸土工格栅的碳排放因子与其抗拉强度成正比，而土工膜的碳排放因子与其厚度密切相关；土工合成材料碳排放因子的主要构成是原材料的隐含碳。

关键词: 能源与环境工程；土工合成材料；土工织物；土工膜；土工格栅；隐含碳；碳排放因子

Abstract: As a new type of building material, geosynthetic materials provide innovative solutions for geotechnical engineering problems and exhibit prominent advantages in energy conservation and emission reduction. However, currently, when calculating and evaluating the carbon footprint of geosynthetic materials engineering, it is rare to use the actually measured carbon emission factors of geosynthetic material products; instead, which is always based on the indirect estimation of relevant databases and literature. Thereby, it fails to truly reflect the hidden carbon of geosynthetic material products and also affects the accuracy and credibility of carbon footprint testing results. Aiming at the three types of most commonly utilized geosynthetic products including geotextiles, geomembranes and geogrids, on-site research on three domestic production enterprises was carried out. The lifecycle process analysis method was adopted to measure the carbon emission factors of geosynthetic products with different specifications from raw materials to final production. The results indicate that the carbon emission factor of plastic stretched geogrids is directly proportional to their tensile strength, while the carbon emission factor of geomembranes is closely related to their thickness. The primary component of the carbon emission factor for geosynthetic materials is the hidden carbon in the raw materials.

Key words: resource and environmental engineering; geosynthetics; geotextiles; geomembranes; geogrids; embodied carbon; carbon emission factors

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