热解炭黑沥青混合料添加剂最佳掺量试验研究  

Experimental study on optimum additive content of pyrolytic carbon black asphalt mixture

作　　者：李闯民[1,2] 胡张勇 甘有为 杨晚生 甘新众 LI Chuangmin;HU Zhangyong;GAN Youwei;YANG Wansheng;GAN Xinzhong(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;Key Laboratory of Road Structure and Materials Transportation Industry,Changsha University of Science&Technology,Changsha 410114,China;Yichun Highway Development Center,Yichun 336000,China)

机构地区：[1]长沙理工大学交通运输工程学院,湖南长沙410114 [2]长沙理工大学道路结构与材料交通行业重点实验室,湖南长沙410114 [3]宜春市公路事业发展中心,江西宜春336000

出　　处：《长沙理工大学学报（自然科学版）》2022年第4期161-170,共10页Journal of Changsha University of Science and Technology:Natural Science

基　　金：长沙市科技计划项目(kq2004065);江西省交通运输厅科技项目(2020H0023);长沙理工大学研究生科研创新项目(SJCX202008)。

摘　　要：【目的】探究废轮胎热解炭黑(TPCB)添加剂在沥青混合料中的最佳掺量,改善沥青混合料的综合性能。【方法】利用基于中心复合设计的响应曲面法(RSM)进行试验设计,对成型的马歇尔试件进行相关试验,分析试件制备参数对沥青混合料性能的影响并对响应变量进行数学建模预测。【结果】TPCB的加入显著提高了沥青混合料的高温稳定性,4.56%的沥青和5.32‰的TPCB为最佳掺量,采用模型预测的结果与试验结果吻合良好。【结论】RSM可有效适用于沥青混合料领域,TPCB作为沥青混合料添加剂有着广阔的应用前景。[Purposes]This work aims to optimize the dosage of waste tire pyrolysis carbon black(TPCB)additive in asphalt mixture to improve the comprehensive performance.[Methods]First,the response surface method(RSM)based on the central composite design was used for experimental design,and relevant tests were carried out on the formed Marshall specimen.Then,the influence of preparation parameters was analyzed,and the response variables was predicted by mathematical modeling.[Findings]The results showed that adding TPCB significantly improved the high-temperature stability of the asphalt mixture,and 4.56%asphalt and 5.32‰TPCB were the optimal dosages.The results predicted by the established model agreed with the experimental results.[Conclusions]Therefore,RSM could also be effectively applied in the field of asphalt mixture,and TPCB asphalt mixture additive had a broad application prospect.

关 键 词：废轮胎热解炭黑添加剂 最佳掺量 响应曲面法 沥青混合料 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]