Ground Improvement Techniques Applied To Very Soft Clays: State Of Knowledge And Recent Advances
Soft ground improvement techniques have evolved substantially in Brazil in recent years. However, their application in soft and very soft clays requires a good understanding of the fundamentals of ground improvement techniques suited to the problem as well as the actual field behavior when implemented on a real scale. This paper describes some of the […]
Triaxial Compression Test on Consolidated Undrained Shear Strength Characteristics of Fiber Reinforced Soil
This study aims to experimentally analyze the effect of fiber length and fiber content on shear strength and deformation properties of fiber reinforced soil by consolidated-undrained triaxial shear tests. The best mechanical properties are presented by the samples with 1.0 % fiber content and 3.09 cm fiber length. The stress-strain relationship of fiber reinforced soil […]
The Performance of a Sand Reinforced with Coconut Fibers Through Plate Load Tests on a True Scale Physical Model
The use of recycled materials has experienced a growing global interest in the last decades. Products like natural fibers are being studied to replace synthetic fibers in some applications because they are renewable resources that have a lower cost. Fibers can be used as reinforcement for covers of landfill sites, landfilling over soft soils, and […]
Stabilization Of Major Soil Masses Using Drainage Tunnels
The destabilizing effect of groundwater is one of the major causes for landslides, which represent a major hazard to human life and the environment. Groundwater lowering is of ten the most efficient way to stabilize large unstable ground masses. Among groundwater lowering measures, drainage tunnels have several advantages, although construction costs may be proportionally high. […]
A Geotecnia Em Aproveitamentos Hidráulicos – Alguns Casos Práticos
Os aproveitamentos hidráulicos estão intimamente relacionados com a geotecnia, seja ao nível dos problemas de interacção específica das suas infraestruturas com os terrenos de fundação, seja pelo recurso aos materiais naturais para execução de aterros de barragens. No presente trabalho procura-se apresentar uma panorâmica das principais questões que se podem equacionar no desenvolvimento do projecto […]
Dehydrating Subsurface Clayey Soils Using Plastic Electrodes: A Simple, Fast, And Yet Reliable Technique
The electrokinetic process seems to be interesting to the earthwork portion on the construction of buildings, and transportation projects since this simple, fast, yet reliable technique could expedite dehydrating of soil and reduce delays in the construction schedule. This paper examined the technical feasibility and a brief cost analysis of using plastic electrodes for electrokinetically […]
Dosage Method For Unconfined Strength And Fatigue Life Of Fiber-Reinforced Cement-Treated Sand
Fiber-reinforcement has been reported as an effective and cost-attractive technique to improve the mechanical behavior of cemented soils. However, the dosage methodologies for these mixtures are still limited, especially regarding dynamic loading. The objective of this research was to analyze the dynamic response and strength behavior of fiber-reinforced cement-treated sand. In this sense, fatigue life, […]
Large-Scale Direct Shear Testing In Coir Fibers Reinforced Sand
The need to develop and commercialize materials incorporating vegetable fibers has risen over the last 20 years to decrease environmental impact and achieve sustainability. In geotechnical engineering, soil reinforcement with plant-based fibers has gained a lot of interest, especially in temporary earthworks. Soil reinforcement with plant-based fibers is a low-cost, environmentally friendly method with excellent […]
Fiber Reinforcement Effectiveness In Two Different Sand Specimens
Fiber Reinforced Soils (FRS) are mixtures of discrete fibers with the soil to create a composite with improved mechanical properties compared to unreinforced material that depends on several soil and fiber properties. Therefore, comparative studies are needed to better understand their influence on FRS mechanical response. This paper analyzes the results of a comprehensive triaxial […]
Influence Of Coconut Fiber On The Microstructural, Mechanical And Hydraulic Behavior Of Unsaturated Compacted Soil
This study aimed to evaluate the influence of the addition of coconut (coir) fibers on the microstructural, hydraulic and mechanical behavior of an unsaturated compacted soil. Specimens were molded and compacted, forming composites with 0%, 0.1%, 0.5% and 1% fiber in relation to their dry mass. The characterization of pores from the soil and fiber […]
Soil-Water Characteristic Curve Of Polypropylene Fibrereinforced Sandy Soil
Fibre reinforcement is considered a good alternative for improving the geotechnical properties of soil. However, studies that investigate its behaviour, accounting for the unsaturated condition, and the hydraulic behaviour of soil mixtures with fibre, are limited. Therefore, the current study evaluates the impact of the inclusion of polypropylene fibres on the hydraulic behaviour of soil […]
Reinforcing Effect Of Recycled Polypropylene Fibers On A Clayey Lateritic Soil In Different Compaction Degrees
The present research investigates the reinforcing effect of recycled polypropylene (R-PP) fibers on a compacted clayey lateritic soil in different compaction degrees. R-PP fibers of 12 mm length were mixed with the soil in the contents of 0.1 and 0.25% of soil dry weight. Unconfined compression strength tests (UCS), direct shear tests and indirect tensile […]
