Academic Journal of Architecture and Geotechnical Engineering, 2025, 7(2); doi: 10.25236/AJAGE.2025.070206.
Yuguo Zhang, Jinshuai Kou, Zhan Jing, Jianfu Zhou
Institute of Civil Engineering and Architecture, Zhongyuan University of Technology, Zhengzhou, Henan, 450007, China
To address the issues of slow strength improvement and complex construction in traditional methods for improving expansive soils, this paper analyzes the feasibility and effectiveness of using high-water grouting materials to improve expansive soils. The expansive soil from Nanyang City, Henan Province, is used as the subject of this study. A series of tests, including unloaded expansion rate, expansion force, and unconfined compressive strength, were conducted to analyze the swelling characteristics and mechanical properties of expansive soil under different dosages of additives, water-cement ratios, and curing periods. The results indicate that high-water grouting materials significantly improve the early strength of expansive soils and reduce their expansiveness. As the dosage of high-water grouting materials increases and the water-cement ratio decreases, the expansiveness of the improved soil decreases, and compressive strength increases. With the extension of the curing period, the expansiveness of the improved soil gradually decreases, and strength continues to grow, reaching an optimal value at 7 days. The best improvement effect occurs when the water-cement ratio is 1.0 and the dosage is 25%, with the expansion almost eliminated after 7 days of curing and a 360% increase in compressive strength compared to untreated soil.
Expansive Soil Improvement, High-Water Grouting Material, Expansion Characteristics, Mechanical Properties
Yuguo Zhang, Jinshuai Kou, Zhan Jing, Jianfu Zhou. Experimental Study on the Engineering Characteristics of Expansive Soil Improved by High-Water Grouting Materials. Academic Journal of Architecture and Geotechnical Engineering (2025), Vol. 7, Issue 2: 39-46. https://doi.org/10.25236/AJAGE.2025.070206.
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