Prediction model for cumulative plastic strain of FAM lightweight soil under freeze-thaw cycles
Source abstract
Abstract
To overcome the limitations of conventional lightweight soils, this study developed a novel lightweight soil using fly ash microspheres (FAM) as the lightweight material. Long-term dynamic triaxial tests were conducted under various stress conditions. The results show that over 82.78% of the total axial strain was accumulated within the first 100 loading cycles. The deformation resistance increases with cement content, but first rises, then declines with increasing FAM content. After the first freeze-thaw cycle, the dynamic strain increased by 126.73%; after three cycles, the increment converged to 2.45%, indicating that the dynamic deformation characteristics remain essentially stable, and the soil exhibits excellent freeze-thaw durability. The proposed cumulative plastic strain prediction model provides a theoretical reference for applying FAM lightweight soil in highway engineering.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Climate change and permafrost · Geotechnical Engineering and Soil Mechanics · Geotechnical Engineering and Soil Stabilization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Northeast Forestry University
Harbin Engineering University
Funding
the General Project of National Natural Science Foundation of China · the Fundamental Research Funds for the Central Universities · the 73rd batch of General Project of China Postdoctoral Science Foundation
References (51)
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