Study on the effects of organic-inorganic composite inhibitor on fume emissions of rubber modified asphalt

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

Construction and Building Materials Pub Date : 2024-11-15 DOI:10.1016/j.conbuildmat.2024.139206

Jiahao Liu , Cong Qi , Quantao Liu , Huan Wang , Chong Wang , Yonghan Zhang , Shaopeng Wu , Na Li

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引用次数: 0

Abstract

During the construction process, the rubber asphalt (RA) results in the generation of considerable quantities of noxious fumes, endangering the safety of those employed in the field and causing unavoidable environmental damage. The traditional inorganic fume suppressants can reduce fume emissions, but compromise the low-temperature performance of asphalt. This paper addresses this issue by employing a combination of organic inhibitor and inorganic fume suppressant. Mechanical and rheological experiments reveal that the organic-inorganic composite inhibitor simultaneously enhance the rutting resistance of RA at high temperatures and the cracking resistance at low temperatures. The results of gas chromatography-mass spectrometry (GC-MS) show that the types of hydrocarbon derivatives (HYDs) and sulfides substances (SCs) in the volatile organic compounds (VOCs) of inorganic- organic composite inhibitor modified asphalt (INOORA) are reduced by 71.4 % and 76.9 % compared to RA, respectively. Brunauer-Emmett-Teller (BET), Fourier Transform Infrared Test (FT-IR), and Thermogravimetric analysis (TG-DTG) results suggest that the organic inhibitor reacts chemically with rubber asphalt components, increasing the size of certain small molecular VOCs in rubber asphalt, which is more readily adsorbed by the pores of diatomaceous earth, thereby synergistically reducing the VOCs concentration in rubber asphalt. The results provided a new method for preventing the volatilization of noxious substances from rubber asphalt, without compromising its road performance.

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有机-无机复合抑制剂对橡胶改性沥青烟尘排放的影响研究

在施工过程中，橡胶沥青（RA）会产生大量有毒烟雾，危及现场工作人员的安全，并对环境造成不可避免的破坏。传统的无机烟雾抑制剂可以减少烟雾排放，但会影响沥青的低温性能。本文采用有机抑制剂和无机烟尘抑制剂的组合来解决这一问题。机械和流变实验表明，有机-无机复合抑制剂可同时增强 RA 在高温下的抗车辙能力和低温下的抗开裂能力。气相色谱-质谱（GC-MS）分析结果表明，无机-有机复合抑制剂改性沥青（INOORA）的挥发性有机化合物（VOCs）中碳氢化合物衍生物（HYDs）和硫化物（SCs）的种类与 RA 相比分别减少了 71.4% 和 76.9%。布鲁瑙尔-艾美特-泰勒（BET）、傅立叶变换红外测试（FT-IR）和热重分析（TG-DTG）结果表明，有机抑制剂与橡胶沥青成分发生化学反应，增大了橡胶沥青中某些小分子 VOC 的尺寸，而硅藻土的孔隙更容易吸附这些小分子 VOC，从而协同降低了橡胶沥青中的 VOC 浓度。研究结果为防止橡胶沥青中有害物质的挥发提供了一种新方法，同时又不影响其路面性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.