ORIGINAL RESEARCH
Study on the Properties of a Novel
Geopolymer Grouting Repair Material
for the Road Hollowing Diseases
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1
Shandong Hi-speed Group Co., Ltd Innovation Research Institute, Jinan,205598, China
2
Engineering College, Ocean University of China, Qingdao, 266100, China
3
Shandong Century Huitong Smart Engineering Technology Co., Ltd., Jinan, 250000, China
4
Qingdao Greentown Huachuan Real Estate Co., Ltd., Qingdao, 266199, China
Submission date: 2023-10-30
Final revision date: 2024-01-30
Acceptance date: 2024-04-27
Online publication date: 2024-09-03
Publication date: 2025-01-28
Corresponding author
Zhao Honghao
Engineering College, Ocean University of China, Qingdao, 266100, China
Pol. J. Environ. Stud. 2025;34(3):2129-2139
KEYWORDS
TOPICS
ABSTRACT
In cases of hollowing disease on roads, the interlayer hollowing form is relatively flat, and the cemented
body tends to easily bend and fold after grouting repair. Additionally, the volume of roadbed hollowing
is large, and the cemented body is prone to shrinking, leading to new diseases. Therefore, it is necessary
to focus on improving the toughness, flexural strength, and shrinkage rate of the novel geopolymer grout
repair material. Currently, there is a lack of grouting repair material tailored to these specific characteristics.
This study presents the development of a novel geopolymer grouting repair material using slag and fly
ash as the main raw materials. The brittleness of the novel material is improved by adding vinyl acetateethylene
cogeopolymer (VAE) glue powder, and the flexural strength of it can also be improved. The
shrinkage resistance of the material is improved by adding ultrafine fly ash microspheres. In addition,
the effect of VAE and ultrafine fly ash microspheres on the performance of the grouting material was
investigated. The novel geopolymer grouting material enhances road safety and durability by increasing
flexural strength by 10.8%, reducing brittleness by 17.4%, and minimizing shrinkage by 38.2%. This is
suitable for repairing interlayer hollowing disease on roads and promotes the advancement of road hidden
disease repair technology.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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