Testing Deformation and Compressive Strength of the Frozen Fine-Grained Soils with Changed Porosity and Density

Abstract

Current paper focuses on the laboratory experiments performed wit aim to test the deformation in the frozen loam soil specimens. Loam frozen soils are subject to the external effects, such as climate and environmental impacts including temperature changes. Soil heave is one of the key features restraining possible area development: construction of buildings, roads and railways. Necessarily, this requires the improvements of methods of the assessment of heave. This research evaluated the compressive strength and deformation in several specimens of the frozen soil. The approach included varying load and physical properties of soil specimens: porosity, pore filling, moisture, density of soil particles and dry soil density. Besides during the experiment, the external conditions were changed: decreased temperature and increased load pressure. The experiment is based on the UPG-MG4-01. The paper presented the laboratory tests of heave and compressive strength of the frozen soils using applied geotechnical methods.

Hardening Accelerators (X-Seed 100 BASF, PCC, LKD and SALT) as Strength-Enhancing Admixture Solutions for Soil Stabilization

“…Fine-grained cohesive soil should be stabilised before its use in construction work (Dahlin et al, 1999;She et al, 2019;Lindh, 2004;Zhou et al, 2017;Lemenkov and Lemenkova, 2021a). Stabilisation improves the engineering properties of finegrained soil by increasing its compressive strength (Brencich et al, 2021;Lemenkov and Lemenkova, 2021b;Wu et al, 2021), reducing its plasticity (Kasprzhitskii et al, 2016) and shrinkswell potential (Chen et al, 2002;Saride et al, 2013), and im-proving its mineralogical, morphological and structural characteristics (James, 2020;Wang et al, 2021).…”

Utilising Pareto efficiency and RSM to adjust binder content in clay stabilisation for Yttre Ringvägen, Malmö

“…At the same time, effective soil stabilisation is crucial for safe road constructions and engineering works. This especially concerns northern regions with harsh environmental and climate conditions that create challenges for infrastructure [1][2][3][4][5][6][7], due to the unique physical and mechanical properties of soil collected in real-world environment, rather than theoretical models presented in technical guidance. Taking this into account, the importance of experiments on soil stabilisation consists in the complexity of real case situations because soil is a highly variable porous structure.…”

Leaching of Heavy Metals from Contaminated Soil Stabilised by Portland Cement and Slag Bremen

“…Examples of leaching from the stabilised soils include immobilisation of heavy metals [17,18], rare earth elements [19,20], or removing environmentally dangerous pollutants [21]. By stabilising organic soils with supplementary cementitious material, such as high carbon fly ashes, such treatment helps improving the geotechnical characteristics, performance and environmental properties of soil [22][23][24]. An important aim of leaching tests is to see if treated soil is acceptable, i.e., to examine environmental effects, impacts and consequences of use in construction applications in civil engineering [25][26][27][28].…”