Multi-objective optimization and performance investigation of surface modification synergistic warm-mixed flame retardant asphalt

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

Construction and Building Materials Pub Date : 2025-03-31 DOI:10.1016/j.conbuildmat.2025.141021

Mengkai Sun , Qing Guo , Zhaoyi He , Lei Yuan , Duoxuan Sun , Kai Fang , Dingbang Wei

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引用次数: 0

Abstract

The influence of warm mix flame retardant on the road performance of asphalt is the main problem in the practical application of warm mix flame retardant. The purpose of this research is to comprehensively consider the physical performance and flame retardant performance of warm-mixed flame retardant asphalt, and to weaken the influence of warm mix flame retardant on asphalt pavement performance by multi-objective optimization of warm mix flame retardant formula. In this research, the single factor test was firstly carried out on the flame retardant asphalt with different flame retardant content to preliminarily determine the flame retardant content. Secondly, different synergistic flame retardant formulations were designed by orthogonal test, and their physical performance and flame retardant performance were evaluated. Then, the multi-objective optimization of different synergistic flame retardants was carried out by combining fuzzy mathematics and entropy weight method, and the best formula was determined. After that, the optimum dosage of warm mix agent was determined by surface activity test and variable temperature compaction test. Finally, the basic physical performance, flame retardancy, rheological performance of warm-mixed flame retardant asphalt and the road performance of warm-mixed flame retardant asphalt mixture were evaluated to explore the influence of warm mix flame retardant on asphalt performance. The results illustrated that the best formula of synergistic flame retardant in warm mix flame retardant was TiO₂-SO₄: ATH: APP = 2: 3: 5, and the best dosage of warm mix agent was 30 % of the mass of flame retardant (CFR). Compared with the synergistic flame retardant (SFR), the influence of surface modified warm mix flame retardant (MSFR) on the deterioration of low temperature performance of SBS modified asphalt and asphalt mixture was improved. At the same time, CFR, SFR and MSFR all improved the high temperature performance of SBS asphalt and asphalt mixture. In addition, the improvement of MSFR on the static and dynamic flame retardancy of SBS modified asphalt was better than that of CFR and SFR.

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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.