Dynamic Properties of Mineral-Based Cementitious Material-Stabilized Slurry Soil Under Vehicle Loading
Zhenlong Sun, Yingying Zhao, Jun Luo, Fengxi Zhou, Xianzhang Ling, Yongbo Wang, Yaping Yang, Sanping Han
TL;DR
This study examines how mineral-based cement improves the mechanical properties of sludge soil under vehicle loads, offering insights for its use in road construction.
Contribution
The study introduces a modified Hardin-Drnevich model to accurately characterize the dynamic behavior of stabilized sludge soils.
Findings
Higher binder content and longer curing age increase dynamic shear modulus and reduce damping ratio.
The dynamic shear modulus shows frequency-dependent behavior within tested loading ranges.
SEM confirms that hydration reactions create a denser soil structure, improving mechanical performance.
Abstract
Sludge is a common engineering byproduct that poses environmental and land-use challenges when disposed of directly. Converting sludge into high-quality subgrade filling material through solidification is therefore of both engineering and ecological significance. In this study, dynamic triaxial tests were conducted on sludge soils stabilized with mineral-based cementitious binders to investigate the effects of binder content, loading frequency, and curing age on the backbone curve, dynamic shear modulus, maximum shear modulus, ultimate stress amplitude, shear modulus ratio, and damping ratio. Scanning electron microscopy (SEM) was further employed to examine the microstructural evolution of the stabilized soils. The results indicate that increasing binder content and curing age significantly enhance the dynamic shear modulus while reducing the damping ratio, and the modulus exhibits a…
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Taxonomy
TopicsGeotechnical Engineering and Soil Stabilization · Grouting, Rheology, and Soil Mechanics · Geotechnical Engineering and Soil Mechanics