地学前缘 ›› 2025, Vol. 32 ›› Issue (6): 367-376.DOI: 10.13745/j.esf.sf.2025.8.68

• 岩石成因与效应新探 • 上一篇    下一篇

地聚合物材料开发中碳循环的矿物学印记:以雄安绿色新材料为例

董国臣(), 王辉, 张以河, 张娜, 刘艳宾, 谢冰晶, 经轶, 莫钧   

  1. 中国地质大学(北京), 北京 100083
  • 收稿日期:2025-05-07 修回日期:2025-07-10 出版日期:2025-11-25 发布日期:2025-11-12
  • 作者简介:董国臣(1962—),男,教授,从事岩石学教学与研究工作。E-mail: donggc@cugb.edu.cn
  • 基金资助:
    科学技术部雄安新区科技创新专项(2023XAGG0068);科学技术部深时数字地球项目(2652023001)

The mineralogical footprint of carbon cycles during geopolymer construction materials development: Case study on Xiong’an green new materials

DONG Guochen(), WANG Hui, ZHANG Yihe, ZHANG Na, LIU Yanbin, XIE Bingjing, JING Yi, MO Jun   

  1. China University of Geosciences (Beijing), Beijing 100083, China
  • Received:2025-05-07 Revised:2025-07-10 Online:2025-11-25 Published:2025-11-12

摘要:

近年来碳循环和碳排放已广受关注,体现在人们日常生活各项活动中。本文针对雄安新区新材料生产过程,对矿山尾矿和建筑固废等原材料,以及3D打印新材料固结过程3天、7天和28天等阶段性产品中的碳成分、含量及其赋存形式等进行了调研和测试分析,研究了不同阶段产品中碳含量变化及其转换特点,估算了不同阶段的碳排放量和吸收量,发现尾矿和建筑固废处理过程释放C的气态成分CO2,固态和液态C基本不变;而新材料砂浆固结过程则体现吸收CO2,整个生产过程总体上碳排放少碳吸收量大,呈现碳汇过程,初步计算表明,生产每立方米新材料要吸收21.87 kg(11.05 m3)的CO2气体,真正实现了新材料的绿色功能,其应用将具有良好的经济效益和社会效应。

关键词: 新材料, 尾矿, 建筑固废, 碳循环, 碳排放, 雄安新区

Abstract:

Carbon cycle and emissions have been receiving widespread attention recently in daily human activity. This study, focusing on the new material production process in Xiong’an New District, has conducted field investigations and laboratory measurements on the carbon composition, content, and forms in mine tailings, construction waste, and products at 3-day, 7-day, and 28-day curing periods. The variation in carbon content and its transformation across different stages of the product lifecycle were studied, and the quantities of carbon emission and absorption were estimated. It is found that the treatment process of mine tailings and construction waste releases only CO2 gas, with no variation in solid and liquid forms of carbon. Conversely, the solidification process of the new material slurry sequesters CO2. Overall, the whole production process absorbs more CO2 than it releases, acting as a carbon sink process. Preliminary estimates indicate that 1 m3 of the new construction material absorbs 21.87 kg (approximately 11.05 m3) of CO2 gas during production. As truly green materials, their application will demonstrate significant economic potential and create a wide range of social benefits.

Key words: new construction materials, mining retail, construction solid waste, carbon cycle, carbon emission, Xiong’an New District

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