Thermal and mechanical properties of natural fibrous nanoclay reinforced epoxy asphalt adhesives

Epoxy asphalt adhesive (EAA) has been widely used as strong waterproof-bonding layers for the orthotropic steel bridge decks in China. This research employs attapulgite (ATT), one kind of natural fibrous nanoclays, as the nanofiller to reinforce EAA. The crystalline structure, rheological property,...

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Bibliographic Details
Published inInternational journal of adhesion and adhesives Vol. 85; pp. 308 - 314
Main Authors Sun, Yifan, Liu, Ya, Jiang, Yongjia, Xu, Ke, Xi, Zhonghua, Xie, Hongfeng
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.10.2018
Elsevier BV
Subjects
Adhesive strength
Asphalt
Bonding strength
Bridge decks
Clay
Composite materials
Epoxides
Epoxy adhesives
Lap-shear
Mechanical properties
Mechanical properties of adhesives
Modulus of elasticity
Morphology
Nanofillers
Nanoparticles
Rheological properties
Scanning electron microscopy
Steel bridges
Steels
Thermal stability
Thermodynamic properties
Viscosity
X-ray diffraction
Scanning electron microscopy
Lap-shear
Mechanical properties of adhesives
Epoxides
Steels
Nanofillers
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Summary:Epoxy asphalt adhesive (EAA) has been widely used as strong waterproof-bonding layers for the orthotropic steel bridge decks in China. This research employs attapulgite (ATT), one kind of natural fibrous nanoclays, as the nanofiller to reinforce EAA. The crystalline structure, rheological property, thermal stability, mechanical properties and morphology of EAA/ATT composites were investigated by X-ray diffraction (XRD), Brookfield rotational viscometer, thermogravimetric analyzer (TGA), universal test machine and scanning electron microscopy (SEM). Results showed the existence of ATT did not change the noncrystalline structure of the EAA. ATT had a significant decrement effect on the rotational viscosity of EAA. Moreover, the viscosity of EAA/ATT composites decreased with the increasing content of ATT at a specific cure time. The addition of ATT improved thermal stability of the neat EAA. In addition, the incorporation of ATT increased the tensile and adhesive properties of the neat EAA. The tensile strength, toughness, Young's modulus and adhesive strength of EAA/ATT composites increased with the increase of ATT loadings.
ISSN:0143-7496
1879-0127
DOI:10.1016/j.ijadhadh.2018.07.005