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Author:

Gao, Y. (Gao, Y..) | Hao, Z. (Hao, Z..) | Zhang, X. (Zhang, X..) | Wang, D. (Wang, D..) | Li, F. (Li, F..) | Zhao, Z. (Zhao, Z..)

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EI Scopus SCIE

Abstract:

The use of solid waste and low-cost gel materials to replace or reduce the use of ordinary Portl and cement (OPC) in emulsified asphalt (EA) binder has positive significance for the comprehensive energy consumption and economic cost of cold mix asphalt (CMA) pavement. The proposed study investigates the interaction, rheological and physicochemical properties of emulsified asphalt (EA) with direct coal liquefaction residue based geopolymers (DG) by fluorescence microscopy tests, the pH test, asphalt conventional tests, dynamic shear rheological test (DSR), and Fourier transform infrared spectroscopy test (FTIR). The test results show that the reaction between DG mortar and EA particles was faster and more violent than that of OPC mortar, resulting in faster demulsification of EA. The added DG mortar increased the pH of the EA binder. Similar to OPC, DG decreased the penetration and ductility of EA evaporation residues, but increased its softening point. The addition of DG to EA changed the rheological properties of its evaporation residue, including complex modulus (G*) and phase angle (δ). Temperature sweep and frequency sweep test results show that DG was comparable to OPC in efficacy against EA residues, improving rutting resistance at the expense of fatigue performance. Complex modulus coefficient (ΔG∗) and complex viscosity coefficient (Δη∗) indicate that the interaction of EA-DG is stronger than that of EA-OPC. FTIR analysis showed that the interaction between DG and EA is linked as a chemical bond. © 2023 Elsevier Ltd

Keyword:

Rheological properties Interaction Emulsified asphalt Demulsification Direct coal liquefaction residue Geopolymer

Author Community:

  • [ 1 ] [Gao Y.]College of Civil Engineering, Taiyuan University of Technology, Shanxi Province, Taiyuan, 030024, China
  • [ 2 ] [Hao Z.]College of Civil Engineering, Taiyuan University of Technology, Shanxi Province, Taiyuan, 030024, China
  • [ 3 ] [Zhang X.]College of Civil Engineering, Taiyuan University of Technology, Shanxi Province, Taiyuan, 030024, China
  • [ 4 ] [Wang D.]School of Transportation Science and Engineering, Harbin Institute of Technology, Heilongjiang Province, Harbin, 150090, China
  • [ 5 ] [Wang D.]Institute of Highway Engineering, RWTH Aachen University, D52074 Aachen, Germany
  • [ 6 ] [Wang D.]Department of Road and Railway Engineering, Beijing University of Technology, Beijing, 100124, China
  • [ 7 ] [Li F.]School of Transportation Science and Engineering, Beihang University, Beijing, 100191, China
  • [ 8 ] [Zhao Z.]College of Civil Engineering, Taiyuan University of Technology, Shanxi Province, Taiyuan, 030024, China

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Source :

Construction and Building Materials

ISSN: 0950-0618

Year: 2023

Volume: 384

7 . 4 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:26

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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