[1]张晨晨,钱振东,牛岩,等.木质颗粒纤维在SMA中的分散性评价与影响因素[J].东南大学学报(自然科学版),2018,48(4):713-718.[doi:10.3969/j.issn.1001-0505.2018.04.018]
 Zhang Chenchen,Qian Zhendong,Niu Yan,et al.Evaluation and influence factors of dispersion property of cellulose fiber pellets in SMA mixture[J].Journal of Southeast University (Natural Science Edition),2018,48(4):713-718.[doi:10.3969/j.issn.1001-0505.2018.04.018]
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木质颗粒纤维在SMA中的分散性评价与影响因素()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
48
期数:
2018年第4期
页码:
713-718
栏目:
交通运输工程
出版日期:
2018-07-20

文章信息/Info

Title:
Evaluation and influence factors of dispersion property of cellulose fiber pellets in SMA mixture
作者:
张晨晨12钱振东1牛岩2王旭东2
1东南大学智能运输系统研究中心, 南京 210096; 2交通运输部公路科学研究院, 北京 100088
Author(s):
Zhang Chenchen12 Qian Zhendong1 Niu Yan2 Wang Xudong2
1Intelligent Transportation Research Center, Southeast University, Nanjing 210096, China
2Research Institute of Highway, Ministry of Transport, Beijing 100088, China
关键词:
道路工程 木质颗粒纤维 析漏损失 有效含量 分散率 影响因素
Keywords:
road engineering cellulose fiber pellets drain-down loss effective content dispersion rate influence factor
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2018.04.018
摘要:
为了研究木质颗粒纤维在SMA沥青混合料的分散特性及其影响因素,根据木质纤维在沥青混合料中的作用机理提出有效纤维含量的概念.基于纤维有效含量与析漏损失的指数关系,提出一种木质颗粒纤维分散性的检测方法,并分析纤维制粒剂、木浆材质、干拌时间、湿拌时间及拌和温度对木质颗粒纤维分散性的影响.试验结果验证了所设计检测方法的可行性与有效性.结果表明:采用沥青制粒剂可大幅提升木质颗粒纤维的分散率;延长干拌时间是提升木质颗粒纤维分散率的最有效拌和工艺;采用原生木浆颗粒纤维不能显著提升纤维分散率,但可大幅降低SMA混合料的析漏损失;拌和温度与木质颗粒纤维分散率之间无显著相关性.采用方差分析得出各因素对分散性的影响大小顺序为:制粒剂、干拌时间、湿拌时间、木浆材质、拌和温度.
Abstract:
In order to research the dispersion property and its influence factors of cellulose fiber pellets in SMA(stone mastic asphalt)mixture, the concept of the effective content of cellulose fiber was derived on the basis of the adsorption mechanism of fiber-bitumen. A testing procedure for estimating the dispersion rate of cellulose fiber pellets was proposed based on the exponential function of effective content and drain-down loss. Five influence factors, including adhesion agent, fiber source, dry pre-mixing time, wet mixing time and mixing temperature, were tested and analyzed. The results show that the proposed testing approach is feasible to determine the dispersion rate of cellulose fiber pellets. The dispersion rate of cellulose fiber pellets can be increased by using bitumen adhesion agent; dry pre-mixing is considered as the most effective mixing technology to improve the dispersion property of cellulose fiber pellets in SMA mixture. The dispersion rate of natural cellulose fiber pellets is slightly greater than that of recycled cellulose fiber pellets, while the drain-down loss of the mixture is significantly correlated with the fiber source. The plant mixing temperature is not relevant to the dispersion property of cellulose fiber pellets. The ANOVA(analysis of variance)approach was used to statistically identify the significance level of influential factors and the order of contribution to the dispersion rate is adhesion agent, dry pre-mixing time, wet mix time, fiber source, and mixing temperature.

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备注/Memo

备注/Memo:
收稿日期: 2017-12-16.
作者简介: 张晨晨(1986—), 男, 博士生; 钱振东(联系人), 女, 博士, 教授,博士生导师, qianzd@seu.edu.cn.
基金项目: 国家重点研发计划资助项目(2016YFB0303103).
引用本文: 张晨晨,钱振东,牛岩,等.木质颗粒纤维在SMA中的分散性评价与影响因素[J].东南大学学报(自然科学版),2018,48(4):713-718. DOI:10.3969/j.issn.1001-0505.2018.04.018.
更新日期/Last Update: 2018-07-20