Rejuvenation effect of aged SBS-modified asphalt utilizing molecule analysis

沥青 材料科学 分子 复合材料 扩散 表面能 相互作用能 化学 热力学 有机化学 物理
作者
Ke Shi,Feng Ma,Jenny Liu,Zhen Fu,Ruimeng Song,Dongdong Yuan,Chen Li
出处
期刊:Journal of Cleaner Production [Elsevier BV]
卷期号:405: 136964-136964 被引量:17
标识
DOI:10.1016/j.jclepro.2023.136964
摘要

The performance of styrene-butadiene-styrene modified asphalt (SBSMA) is significantly impacted by its aging and regeneration. In this research, the molecular dynamics simulation was utilized to investigate the rejuvenation effect of active reagents on aged SBS modified asphalt through the following tasks: 1) verifying the accuracy of the asphalt model by density and solubility parameters; 2) assessing the changes in the rejuvenated asphalt model's energetic parameters and volume parameters, 3) studying the interaction energy between SBS molecules and asphalt molecule models, and 4) evaluating the relative concentration, interfacial interaction energy, and diffusion effect of the asphalt-asphalt models. The results indicated that the restored broken SBS molecule substantially impacted the functionality of the rejuvenated asphalt binder. For Methylene-bis(4-cyclohexylisocyanate) (HMDI) and 1,6-Hexanediol Diglycidyl Ether (HDE) rejuvenated asphalts, the non-bond energy decreased gradually with the repair of broken SBS molecular structures. The free volume fraction of rejuvenated binders was lower than that of SBSMA, indicating that the compactness and packing degree of the rejuvenated asphalt were increased. The interaction energy between SBS and asphalt molecules in rejuvenated asphalt increased because of the enhanced van der Waals interaction between the reconstructed SBS molecule and rejuvenated binders. The free HDE molecular chain reduced the interaction energy between SBS and asphalt molecules. For the asphalt-asphalt models, the diffusion coefficient of the SBSMA-rejuvenated asphalt model was lower than that of the SBSMA-SBSMA model. The HDE rejuvenated asphalt showed better diffusion behavior than SBSMA, and SBS molecules repaired by HDE had excellent fluidity. The interfacial interaction energy of the SBSMA-rejuvenated asphalt model was higher than that of the SBSMA-SBSMA model. With the repair of the broken SBS molecular chain, the interfacial interaction energy between HMDI rejuvenated asphalt and SBSMA increased gradually. In contrast, the interfacial interaction energy between HDE rejuvenated asphalt and SBSMA decreased gradually. The fully restored SBS molecular structure had stable thermodynamic properties and could accelerate the diffusion effect of rejuvenated asphalt.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
64658应助Ruby采纳,获得10
刚刚
kiki完成签到 ,获得积分10
1秒前
小二郎应助fafamimireredo采纳,获得10
1秒前
2秒前
小胖熊完成签到,获得积分10
2秒前
2秒前
bgt发布了新的文献求助10
3秒前
张灬小胖完成签到,获得积分10
3秒前
Mmm发布了新的文献求助10
3秒前
星辰大海应助hhh采纳,获得10
3秒前
3秒前
3秒前
4秒前
4秒前
4秒前
joni完成签到,获得积分10
4秒前
111完成签到,获得积分10
5秒前
会走路的番茄完成签到,获得积分10
5秒前
汉堡包应助闪闪的梦柏采纳,获得10
5秒前
可爱的函函应助菠菜采纳,获得200
5秒前
6秒前
Jenny_Zhan完成签到,获得积分10
6秒前
7秒前
JoshuaChen发布了新的文献求助10
7秒前
火星上香菇完成签到,获得积分10
8秒前
8秒前
暮歌发布了新的文献求助50
8秒前
9秒前
迷路念真完成签到,获得积分20
9秒前
Jenny_Zhan发布了新的文献求助10
9秒前
可耐的发夹完成签到 ,获得积分10
9秒前
fang发布了新的文献求助10
10秒前
爆米花完成签到,获得积分10
10秒前
ZZZ发布了新的文献求助10
10秒前
NexusExplorer应助bgt采纳,获得30
11秒前
12秒前
喜之郎完成签到,获得积分10
12秒前
自然1111发布了新的文献求助10
12秒前
牛姐发布了新的文献求助20
12秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Handbook of Marine Craft Hydrodynamics and Motion Control, 2nd Edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3987078
求助须知:如何正确求助?哪些是违规求助? 3529488
关于积分的说明 11245360
捐赠科研通 3267987
什么是DOI,文献DOI怎么找? 1804013
邀请新用户注册赠送积分活动 881270
科研通“疑难数据库(出版商)”最低求助积分说明 808650