An efficient PEI based carbon absorption coating for asphalt pavement

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-06-14 DOI:10.1016/j.conbuildmat.2025.142115

Bochao Zhou, Hailong Li, Yang Zhang, Yulei Liang, Chao Wang

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引用次数: 0

Abstract

This study explores the development and performance of a polyethylenimine (PEI)-based coating for carbon dioxide (CO₂) absorption in asphalt pavements. To address the urgent need for carbon mitigation in transportation infrastructure, this coating integrates PEI of amine-rich adsorption capacity, silica nanoparticles (SiO₂) using for structural reinforcement, and activated carbon (AC) using for enhancing gas diffusion. The absorption mechanism is investigated in depth, with a focus on optimizing the mixture ratio to maximize CO₂ absorption. The results reveal that the optimal ratio of PEI:SiO₂:AC (3:1:1) achieves a CO₂ absorption efficiency of 30.5 %. In addition, microstructure characterization was performed using FT-IR and SEM，the result show that incorporation of AC significantly improves the absorption performance due to its porous structure, which increases surface area and CO₂ interaction. In addition, the coating exhibits excellent road performance, including pencil hardness of 2 H, excellent water repellency, enhanced skid resistance when quartz sand is added. These properties ensure its practical applicability. Its effective absorption capacity, structural integrity, and durability highlight its potential as an innovative solution for reducing the environmental footprint of asphalt pavements.

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一种高效的PEI基沥青路面碳吸收涂料

本研究探讨了一种用于沥青路面二氧化碳吸收的聚乙烯亚胺（PEI）基涂料的开发和性能。为了解决交通基础设施碳减排的迫切需求，这种涂层结合了富胺吸附能力的PEI，用于结构加固的二氧化硅纳米颗粒（SiO₂）和用于增强气体扩散的活性炭（AC）。深入研究了吸收机理，重点是优化混合比例以最大限度地吸收CO₂。结果表明，PEI:SiO₂：AC的最佳配比（3:1:1）可达到30.5 %的CO₂吸收率。此外，利用FT-IR和SEM对其微观结构进行了表征，结果表明，由于活性炭的多孔结构，活性炭的加入显著提高了吸附性能，增加了比表面积和CO₂相互作用。此外，该涂层具有优异的路用性能，铅笔硬度为2 H，优异的防水性，加入石英砂后，防滑性能增强。这些特性保证了它的实用性。其有效的吸收能力、结构完整性和耐久性突出了其作为减少沥青路面环境足迹的创新解决方案的潜力。

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.