|Table of Contents|

Overview of application of coal gangue in roadbed and pavement engineering in China(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2026年01期
Page:
112-137
Research Field:
综述
Publishing date:

Info

Title:
Overview of application of coal gangue in roadbed and pavement engineering in China
Author(s):
HUI Yingxin1; 2; 3;  ZHANG Shen1;  YUAN Huaqiang1;  YAN Sheng2; 3;  MA Lianxia4; 5
1.School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, Ningxia, China; 2. Ningxia Communications Construction Co., Ltd, Yinchuan 750001, Ningxia, China; 3. Ningxia Transport Science Research Institute Co., Ltd., Yinchuan 750004, Ningxia, China; 4. Xinjiang Communications Construction Group Co., Ltd., Urumqi 830016, Xinjiang, China; 5. Xinjiang Communications Construction Planning Survey and Design Co., Ltd., Karamay 834099, Xinjiang, China
Keywords:
road engineering;  coal gangue;  application mechanism;  comprehensive evaluation;  road performance
PACS:
U414
DOI:
10.19815/j.jace.2025.04061
Abstract:
Based on understanding the material properties of coal gangue, the application progress in roadbed, base course, and surface course applications were systematically reviewed. The strength development mechanisms, construction adaptability, and durability performance of coal gangue as an eco-friendly alternative material in different road structural layers were mainly analyzed. Combined with recent representative research, the advantages of coal gangue materials in engineering properties such as compactability, water stability, and shear strength were summarized. The evolution of mechanical properties and structural vulnerability under high-temperature wet-dry cycles, freeze-thaw cycles, and loading conditions were analyzed. The structural composition and strength formation mechanisms of cement-stabilized and lime-fly ash-stabilized coal gangue bases were summarized, and their application potential and functional expansion directions in asphalt mixtures were explored. The results show that coal gangue possesses excellent mechanical properties, making it a valuable road engineering material worthy of promotion. Affected by regional variations in physical properties, the longterm service performance and environmental safety are still lack of systematic evaluation, and the relevant standard system is not perfect. In the future, it is necessary to strengthen the research on the multicondition service behavior of coal gangue in road engineering, construct a wholeprocess standardized technical system covering material evaluation, mix design, construction techniques and performance testing, and promote the road application of coal gangue from pilot demonstration to largescale, standardized and industrialized development.

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Last Update: 2026-01-20