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作者:

Gao, Yang (Gao, Yang.) | Hao, Zhongqing (Hao, Zhongqing.) | Zhang, Xiao (Zhang, Xiao.) | Wang, Dawei (Wang, Dawei.) | Li, Feng (Li, Feng.) | Zhao, Ziming (Zhao, Ziming.)

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EI Scopus SCIE

摘要:

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 geo-polymers (DG) by fluorescence microscopy tests, the pH test, asphalt conventional tests, dynamic shear rheo-logical 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 (delta). 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 co-efficient (Delta G*) and complex viscosity coefficient (Delta eta*) 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.

关键词:

Geopolymer Emulsified asphalt Demulsification Direct coal liquefaction residue Interaction Rheological properties

作者机构:

  • [ 1 ] [Gao, Yang]Taiyuan Univ Technol, Coll Civil Engn, Taiyuan 030024, Shanxi, Peoples R China
  • [ 2 ] [Hao, Zhongqing]Taiyuan Univ Technol, Coll Civil Engn, Taiyuan 030024, Shanxi, Peoples R China
  • [ 3 ] [Zhang, Xiao]Taiyuan Univ Technol, Coll Civil Engn, Taiyuan 030024, Shanxi, Peoples R China
  • [ 4 ] [Zhao, Ziming]Taiyuan Univ Technol, Coll Civil Engn, Taiyuan 030024, Shanxi, Peoples R China
  • [ 5 ] [Wang, Dawei]Harbin Inst Technol, Sch Transportat Sci & Engn, Harbin 150090, Heilongjiang, Peoples R China
  • [ 6 ] [Wang, Dawei]Rhein Westfal TH Aachen, Inst Highway Engn, Aachen D-52074, Germany
  • [ 7 ] [Wang, Dawei]Beijing Univ Technol, Dept Rd & Railway Engn, Beijing 100124, Peoples R China
  • [ 8 ] [Li, Feng]Beihang Univ, Sch Transportat Sci & Engn, Beijing 100191, Peoples R China

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来源 :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

年份: 2023

卷: 384

7 . 4 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:26

被引次数:

WoS核心集被引频次: 7

SCOPUS被引频次: 7

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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