Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"soil stabilisation"”.
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A new soil stabilisation technique
This work describes a novel method of soil stabilisation at meso-scale which involves mixing into the soil molecularly oriented mesh elements in the form of squares, rectangles or ribbons. Laboratory compaction, CBR, permeability, triaxial, repeated loading, long term loading (creep) and model …
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Sulfate soil stabilisation with silica fume-based binders
Sulfate soils are encountered in nearly every country in the world. These soils, where calcium-based stabilisers are added, can undergo heave-induced expansion as a result of the formation of ettringite. Therefore, this research examines the viability of using silica fume (a by-product of silicon …
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Mechanical Properties and Environmental Performance of Calcium Carbide Residue-Based Materials in Soil Stabilisation
… residue (CCR)-based materials for sustainable soil stabilisation, including CCR alone, CCR combined with fly ash (CCR-FA), and CCR-FA activated by a waste glass-derived alkaline activator. A series of microstructural analyses, isotropic consolidation, consolidated undrained, tank leaching, and …
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Soft Soil Stabilisation Using a Novel Blended Cementitious Binder Produced From Waste Fly Ashes
Soil stabilisation is one of the most common techniques used to mitigate the undesirable properties of soft soils such as low compressive strength and high compressibility. Cement is the most commonly used binder for soil improvement applications in the UK and worldwide due to its high strength …
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Оценка и снижение экологической опасности отвалов горного производства в Новороссийской промышленной агломерации
… air and subsequently precipitates on the topsoil. Soil and plant sampling and chemical analysis (> 200 specimens) revealed the geochemical anomalies of Pb, Zn, Cu, Ba and Sr. Land zoning based on accumulated environmental damage indicators and the debris-flow technical risk was performed to …
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Constitutive behaviour of cement treated marine clay
Cement-soil stabilisation has been widely used to improve engineering performance of clayey soils in various applications. This thesis investigates the microstructure and macroscopic behaviour of laboratory prepared cement treated clay specimens that were cured under atmospheric, undrained and …
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Microbial-Induced Calcite Precipitation in soils: use of alternative raw materials and analysis of environmental implications
… precipitation of calcium carbonate minerals. In soil, MICP alters soil mechanical properties through filling soil pores and binding soil particles. Therefore, MICP is investigated as a soil stabilisation technique in soil engineering. Compared to traditional soil stabilisation techniques, MICP is …
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Enhancing the engineering properties of expansive soil using bagasse ash, bagasse fibre and hydrated lime
Expansive soils exhibit massive volume change against fluctuations of moisture content. Shrinkage and expansion of soil can commonly take place near the ground surface, where it is directly subjected to seasonal and environmental variations. Construction of civil engineering structures on expansive …
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Engineering properties of sulphate-bearing clay soils stabilised with lime-activated ground granulated blast furnace slag (GCBS)
… 6% gypsum) and a natural sulphide-bearing clay soil, Lower Oxford Clay. Based on shear, compressive and indirect tensile strength testing, it was found that an increase in the stabiliser slag/lime ratio results in substantial strength increase even after short curing periods (up to 12 weeks). …
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The development of unfired clay building materials for sustainable building construction
… and where 3-8% lime is required for effective soil stabilisation. Hence, the final pricing of the unfired clay brick is expected to be relatively low. Industrial scale brick specimens were produced during two separate industrial trials. The first trial was at Hanson Brick Company Ltd, …
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Microbial-Induced Calcium Carbonate Precipitation: from micro to macro scale
… Because the formed CaCO3 crystals can bond soil particles and improve the mechanical properties of soils such as strength, MICP has been explored for potential engineering applications such as soil stabilisation. However, it has been difficult to control and predict the properties of CaCO3 …
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Circular dry cement inclusions: a novel approach to stabilising clay soil
… This project undertook an initiative approach to soil stabilisation, with a key aim of establishing whether or not a deliberate inclusion of dry Portland cement would induce consolidation in a clay soil, by transferring and fixating pore water into the cement and changing the structure of the …
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Stabilisation of sulphide rich soil: problems and solutions
… the findings from this thesis indicate that soil stabilisation with lime and GGBS is particularly effective for naturally occurring sulphide rich clay soils (such as the LOC) and is an environmentally friendly alternative to PC-stabilised soils.
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Property Changes and Mechanisms in Lime-Stabilised Kaolinite in the Presence of Metal Sulphates
… world-wide. Thus the advantages of employing soil stabilisation as opposed to granular material in highway construction and foundations (i.e. cost effectiveness, material savings, and waste disposal management) have become more apparent. In soil lime-stabilisation, however, there has been …
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Static and Dynamic Performance of Biochar Enhanced Cement Stabilised Peat
Peat is a type of soft soil with very high organic and water contents. It lacks any kind of structure, which makes it extremely compressible and weak. These are highly undesirable physical characteristics when considering a site for construction, as they significantly increase the risk of large …
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Shade tolerance of tropical forage legumes for use in agroforestry systems
… resources, an increased and diversified income, soil stabilisation and the potential for higher plantation yields through better weed control, nutrient cycling and nitrogen accretion. However, the significant acceptance of tree-pasture (silvopastoral) systems has been impeded by the belief that …
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Restoring forest landscapes for nature conservation and human well-being: Advanced spatial decision support tools
… other forest-related ecosystem services, such as soil stabilisation and watershed protection. This is particularly dangerous in poor regions, where livelihoods are strongly based on locally available natural resources. In 2000, IUCN and WWF have introduced a new restoration approach called Forest …
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Potassium acetate treatment as a potential means for stabilising extra sensitive, halloysite-rich soils in the Bay of Plenty, New Zealand — A novel approach to an old issue
… here aimed to treat a halloysite-rich sensitive soil with potassium acetate to determine if the soil could be regarded as strengthened. Atterberg limit testing of the soil showed the untreated Pahoia Tephra to have a liquid limit higher than the natural moisture content (61%), meeting the …