河南科技大学学报（自然科学版）2025，Vol.46Issue(5)：17-25,9.DOI:10.15926/j.cnki.issn1672-6871.2025.05.003
响应面法优化复合改性沥青及其抑烟机理研究
Research on the Optimization of Composite Modified Asphalt Using Response Surface Methodology and its Fume Suppression Mechanism
摘要
Abstract
To clarify the release characteristics of fumes under the coupling effect of multiple factors and solve the issues of low efficiency of single fume suppressant and unclear synergy mechanism,the emission patterns and gas components of fumes under various conditions were investigated in this study.The response surface method was adopted for multi-objective optimization design,and a multi-objective optimization model for fume suppression rate,penetration,softening point,ductility,and fume suppressant ratio was established.The optimal dosage was calculated,and the effect and synergy mechanism of the composite fume suppressant on asphalt were analyzed.The results show that the effect of stirring rate on the generation rate of asphalt fumes initially increases and then tends to be stabilized;with the rise in temperature,the generation rate of asphalt fumes is divided into three stages:slow growth,rapid growth,and subsequent slow growth.The amount of asphalt fumes produced varies with the extension of heating time.The fume emissions of 70# and 90# asphalt are higher than that of 30# asphalt,while the lowest fume release is exhibited by SBS modified asphalt.Both the quantity and composition of fumes released differ across various asphalt types.When the composite fume suppressant is formulated with a mass ratio of 4.38％magnesium hydroxide,2.19％expandable graphite,and 3％activated carbon,the fume suppression rate reaches 82.52％,the asphalt structure distribution is uniform,and the modification mechanism is dominated by physical effects.关键词
沥青烟气/复合改性/响应曲面法/排放规律Key words
asphalt fume/composite modification/response surface methodology/emission patterns分类
交通运输引用本文复制引用
娄可可,王思彤,肖鹏,张新..响应面法优化复合改性沥青及其抑烟机理研究[J].河南科技大学学报（自然科学版）,2025,46(5):17-25,9.基金项目
国家自然科学基金项目(52408498) （52408498）
