|Table of Contents|

Study on nano-ATP grafted basalt fiber and its bonding characteristics with asphalt(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2025年5期
Page:
68-80
Research Field:
道路工程
Publishing date:

Info

Title:
Study on nano-ATP grafted basalt fiber and its bonding characteristics with asphalt
Author(s):
YANG Cheng-cheng1; 2;  LIU Li1;  LIU Zhao-hui1;  ZHANG Long-ke1
(1. School of Traffic and Transportation Engineering, Changsha University of Science and Technology,Changsha 410114, Hunan, China; 2. Department of Traffic Administration and Engineering, Hunan Police Academy, Changsha 410138, Hunan, China)
Keywords:
road engineering;  fiber asphalt;  experimental research;  bonding characteristics;  basalt fiber;  nano-attapulgite;  chemical grafting
PACS:
U414
DOI:
10.19721/j.cnki.1671-8879.2025.05.006
Abstract:
Basalt fiber(BF)is an excellent pavement reinforcement material, but due to its smooth surface and low surface energy, it leads to insufficient bond strength at the interface with asphalt, which limits its road performance. In order to enhance the interfacial bond strength between BF and asphalt, the preparation method of ATP grafted BF(ATP-BF)was proposed by using chemical grafting method with nano-attapulgite(ATP)as grafting material. The microscopic and road properties of ATP-BF were analyzed by scanning electron microscopy test, fourier transform infrared spectroscopy test, thermal stability test, and asphalt absorption test and holding properties test. The bonding properties and mechanisms of ATP-BF with asphalt were investigated using fiber pull-out test, fiber modified asphalt tensile properties test and molecular dynamics simulation. The results show that ATP densely wraps on the surface of BF, and there is a “amphibole double chain” bridging oxygen Si—O—Si bond in the ATP-BF. Meanwhile, the thermal stability of ATP-BF does not change significantly, and the rate of absorbing and holding asphalt increases by 69.74% compared with that of the original BF.The peak load, interfacial shear strength and pull out work of ATP-BF from asphalt are 1.16 times, 1.16 times and 1.90 times of the original BF, respectively. The values of peak tension and ductility of ATP-BF modified asphalt increase by 5.34% and 152.42%, respectively. At the same time, the area encompasse by the tension-ductility curve increased by 53.96%. Molecular dynamics simulation shows that the interfacial energy between ATP and asphalt at different temperatures is greater than that of the original BF. At 298 K, the interfacial energy between ATP and asphalt is 21.37% higher than that of the original BF, and the original BF and ATP have the highest interfacial energy with the aromatics in the four components of asphalt.9 tabs, 14 figs, 32 refs.

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Last Update: 2025-09-30