Subgrade ≈ Subgrade
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Multi-scale laboratory evaluation of the physical, mechanical, and microstructural properties of soft highway subgrade soil stabilized with calcium carbide residue Open
Calcium carbide residue (CCR) is an industrial by-product, stockpiles of which are rapidly accumulating worldwide. Highway embankment construction has been identified as an avenue to consume huge quantities of CCR as an economical, less en…
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Stabilization of alluvial soil for subgrade using rice husk ash, sugarcane bagasse ash and cow dung ash for rural roads Open
This paper concerned with the stabilization of subgrade soil using different types of locally available materials such as rice husk ash (RHA), sugarcane bagasse ash (SCBA) and cow dung ash (CDA). The RHA, SCBA and CDA were mixed by partial…
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Prediction of remaining service life of pavement using an optimized support vector machine (case study of Semnan–Firuzkuh road) Open
Accurate prediction of the remaining service life (RSL) of pavement is essential for the design and construction of roads, mobility planning, transportation modeling as well as road management systems. However, the expensive measurement eq…
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Expansive soil modified by waste steel slag and its application in subbase layer of highways Open
Steel slag is a waste by-product of the steel industry. The recycling usage of steel slag is limited due to the mutative chemical compositions it contains and its low cementation. In this investigation, the composition adjustment and activ…
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Railway Subgrade Defect Automatic Recognition Method Based on Improved Faster R-CNN Open
Railway subgrade defect is the serious threat to train safety. Vehicle-borne GPR method has become the main railway subgrade detection technology with its advantages of rapidness and nondestructiveness. However, due to the large amount of …
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Effect of high temperature and traffic loading on rutting performance of flexible pavement Open
The aim of this research is to study the effect of high temperature on rutting damage of flexible pavement by imposed two models for investigation using ABAQUS ver.6.12.1 finite element program. The first model induced traffic loading and …
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Review of research on high-speed railway subgrade settlement in soft soil area Open
Construction issues of high-speed rail infrastructures have been increasingly concerned worldwide, of which the subgrade settlement in soft soil area becomes a particularly critical problem. Due to the high compressibility and low permeabi…
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Investigation Progresses and Applications of Fractional Derivative Model in Geotechnical Engineering Open
Over the past couple of decades, as a new mathematical tool for addressing a number of tough problems, fractional calculus has been gaining a continually increasing interest in diverse scientific fields, including geotechnical engineering …
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Stabilization of black cotton soil subgrade using sawdust ash and lime Open
This research dwells on how black cotton soil (BCS) could be stabilized and made a suitable subgrade material using sawdust, a readily and cheaply available material. Sawdust was burnt to ashes in a furnace at a temperature of 800 °C and t…
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Remediation of Expansive Soils Using Agricultural Waste Bagasse Ash Open
Bagasse is a fibrous material remaining after crushing sugarcane to extract its juice; and bagasse ash is produced after burning bagasse. Improper disposal of this material can create environmental problems around sugar manufacturing plant…
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Assessment of mechanical properties of cement stabilized soils Open
Recently, the cement stabilized soil is widely used in pavement applications due to its high potential saving in cost and time. An extensive laboratory tests were conducted to study the mechanical properties of cement stabilized materials …
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Ameliorating effect of milled eggshell on cement stabilized lateritic soil for highway construction Open
This case study outlined the outcomes from the laboratory assessment of a lateritic soil
\nstabilized with milled eggshell, cement and mixture of both in ratio 1:1 for potential use as
\na highway construction material. The stabilizing bin…
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Improvement of poor subgrade soils using cement kiln dust Open
Construction of pavements layers on subgrade with excellent to good properties reduces the thickness of the layers and consequently reduces the initial and maintenance cost of highways and vice versa. However, construction of pavements on …
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An intelligent approach for predicting the strength of geosynthetic-reinforced subgrade soil Open
In the recent times, the use of geosynthetic-reinforced soil (GRS) technology has become popular for constructing safe and sustainable pavement structures. The strength of the subgrade soil is routinely assessed in terms of its California …
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An experimental study on the behavior of lime and silica fume treated coir geotextile reinforced expansive soil subgrade Open
Structures constructed on expansive soils are experiencing higher upward pressure due to swelling- shrinkage nature of expansive soil. India has 15–20% expansive soil, which causes severe damage to the existing structure, including pavemen…
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Preliminary Validation of a Novel Method for the Assessment of Effective Stress State in Partially Saturated Soils by Cone Penetration Tests Open
A proper assessment of the soil effective stress state is crucial in many cases to identify a potential geological/geotechnical hazard as shallow landslides or failure of levees that may have a significant impact on human activities and de…
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Remote Bridge Deflection Measurement Using an Advanced Video Deflectometer and Actively Illuminated LED Targets Open
An advanced video deflectometer using actively illuminated LED targets is proposed for remote, real-time measurement of bridge deflection. The system configuration, fundamental principles, and measuring procedures of the video deflectomete…
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Geotechnical behaviour and micro-analyses of expansive soil amended with marble dust Open
The large-scale utilization of waste materials is possible due to their comprehensive geotechnical and mineralogical characterization and their interaction behaviour with soil. No significant attempt has been made to use marble dust, a was…
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Effect of glass fiber on the properties of expansive soil and its utilization as subgrade reinforcement in pavement applications Open
The purpose of this study is to investigate the use of glass fibers as discrete random reinforcement in expansive subgrade soil to improve its strength for pavement application. The fiber content varied between 0.25 % and 1.0 % by weight o…
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Evaluation on the Mechanical Properties of Ground Granulated Blast Slag (GGBS) and Fly Ash Stabilized Soil via Geopolymer Process Open
This study intended to address the problem of damaged (collapsed, cracked and decreased soil strength) road pavement structure built on clay soil due to clay soil properties such as low shear strength, high soil compressibility, low soil p…
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Impact of Biocompatible Nanosilica on Green Stabilization of Subgrade Soil Open
This study reports the synthesis and potential application of biocompatible silica nanoparticles for subgrade soil stabilization. Nanosilica preparation as a major component from wheat husk ash is systematically studied and confirmed by FT…
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Laboratory Investigation in the Improvement of Subgrade Characteristics of Expansive Soil Stabilised with Coir Waste Open
Soft soils form problematic subgrade for pavements due to its low bearing capacity and strength. Pavement loads coming on the soft subgrade soil may cause detrimental pumping actions when they are located in areas with high water table whi…
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Simplified analytical method for evaluating the effects of overcrossing tunnelling on existing shield tunnels using the nonlinear Pasternak foundation model Open
The excavation of a new tunnel above an existing shield tunnel at close proximity may cause a series of adverse impacts on the underlying tunnel. Thus, a reasonable assessment of the existing shield tunnel's responses to overcrossing tunne…
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Strength behavior of clayey soil stabilized with saw dust ash Open
Huge quantity of saw dust is being generated worldwide due to the rapid urbanization. The disposal of saw dust in open areas or landfills is not an environment friendly solution. Utilization of saw dust as ash in geotechnical applications …
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Using Recycled Aggregates from Construction and Demolition Waste in Unbound Layers of Pavements Open
Pavements are an expensive part of transportation infrastructures, as their construction and maintenance require large amounts of resources and materials every year and all over the world. A sustainable solution for considering environment…
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An experimental study on micro-structural and geotechnical characteristics of expansive clay mixed with EPS granules Open
© 2020 Pavement structures constructed on the expansive soil subgrade experience a higher upward pressure compared to any other subgrade material. The upward pressure is caused due to high swelling and shrinkage characteristics of expansiv…
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Scaled model tests on influence factors of full geosynthetic-reinforced pile-supported embankments Open
A geosynthetic-reinforced pile-supported (GRPS) embankment that consists of embankment fill, geosynthetic, piles, and foundation soils is a complex soil–structure system. Its key load transfer mechanisms include soil arching and tensioned …
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Characteristic of unbound granular materials and subgrades based on multi stage RLT testing Open
The unbound granular layers (UGM’s) and the subgrade of a pavement structure provide a significant support for the structure as a whole. Hence the mechanical properties of these materials are important for the overall performance of the st…
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A Review and Evaluation of Ballast Settlement Models using Results from the Southampton Railway Testing Facility (SRTF) Open
Many of the world’s railways run on ballasted track, which has for nearly 200 years provided a stable support for train operation. However, with trafficking the geometry of the track deteriorates, mainly as a result of the development of d…
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Interpretation of Cone Penetration Test Data in Layered Soils Using Cavity Expansion Analysis Open
Cavity expansion theory plays an important role in many geotechnical engineering problems, including the cone penetration test (CPT). One of the challenges of interpreting CPT data is the delineation of interfaces between soil layers and t…