ORIGINAL RESEARCH article
Front. Mater.
Sec. Mechanics of Materials
Research on the development and application of dope-modified environmentally friendly composite thin spray materials
Jingang Li 1
Ming Zheng 2
Hao Li 2
1. Bulianta Coal Mine, Shendong Coal Group Co., Ltd., CHN Energy, Ordos, Ordos, China
2. Heilongjiang University of Science and Technology, Harbin, China
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Abstract
The current underground roadway spraying materials have problems such as low flexibility, poor adhesion, high resilience, easy cracking and complicated construction operation, etc. This study uses white silicate cement (P·W), fast hard sulfoaluminate cement (SAC) as the base material, adds a certain amount of clay and fly ash as admixtures, and introduces admixtures such as xanthan gum, cellulose ether, naphthalene water reducing agent, and coagulant, etc. to develop a kind of underground with New composite slurry material for downhole. The mechanical property test, setting time and flow rate test, dry shrinkage test, XRD physical analysis and SEM electron microscope scan were used to study the properties and microscopic morphology of this material, and the industrial ap-plication in the field proved the effect of this material on the slurry spraying operation. The results show that the material has good fluidity, adjustable setting time, fast hardness and early strength, small dry shrinkage rate, and large contact angle with water. The flexible support effect of the material is good, and the air leakage volume of 100 meters in the roadway drops to 2.8m3/min. Moreover, the material is green and environmental friendly, which realizes the recycling of resources and provides experience for the future slurry spraying construction.
Summary
Keywords
composite slurry spraying material, field application, Flexible support, green, Microstructure-property relationship
Received
09 January 2026
Accepted
19 February 2026
Copyright
© 2026 Li, Zheng and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Jingang Li
Disclaimer
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.