Engineering Technology: Recent submissions

Now showing items 1-20 of 124

Large-scale testing facilities to study the stress-strain, degradation and drainage behaviours of railway ballast.

Navaratnarajah, S. K.; Mayurang, H. G. S.; Venuja, S. (University of Peradeniya, 2021)

The demand for quicker and safer transport and solutions for congestion in main highways during peak hours has made the railways the most favourable means of public transportation in many countries. Besides, the demand for ...
Insertion of geogrid to the ballast layer to improve rail track performance.

Venuja, S.; Navaratnarajah, S. K.; Bandara, C. S.; Jayasinghe, J.A.S.C. (University of Peradeniya, 2021)

Rail transport provides assured services to commuters and freights more economically. In conventional rail tracks, rails are rested on sleepers on top of the layered substructure. The ballast layer is the prominent ...
Experimental studies on the mechanical behavior of fouled ballast using large-scale testing

Venuja, S.; Navaratnarajah, S. K. (University of Toronto, Canada., 2023)

Rail transportation is a resource-efficient mode of transportation that provides economic benefits, higher safety, and lessens travel time. Ballasted rail tracks are the conventional and popular rail tracks all around the ...
Compressibility behavior of peat stabilized with low Calcium fly ash: An experimental study.

Mathiluxsan, S.; Venuja, S.; Nasvi, M. C. M. (University of Moratuwa., 2016)

Peat is a kind of soft organic soil having partially disintegrated plant remains hence it is not good for constructions. Chemical stabilization is the commonly used ground improvement technique by adding chemical admixtures ...
Geotechnical Engineering Properties of Fly Ash and Well Graded Sand Treated Peat

Venuja, S.; Mathiluxsan, S. (Sri Lankan Geotechnical Society, 2017)

Peat is a kind of soft organic soil having partially disintegrated plant remains hence it is not good for constructions. Chemical stabilization is the commonly used ground improvement technique by adding chemical admixtures ...
Influence of fine materials on stress-strain and degradation behavior of railway ballast under static loading conditions.

Navaratnarajah, S. K.; Venuja, S.; Shahmi, N. M.; Rimas, N. M. (Graduate Associate Professionals (Pvt) Ltd, 2019)

Ballast is a selected, crushed, granular material used for supporting train load through sleepers and rail in a rail track foundation system. It is used highly because of the availability of low-cost raw materials and has ...
Analysis of shear and degradation behaviour of fresh and fouled rail track ballast using large-scale direct shear tests

Venuja, S.; Navaratnarajah, S. K. (Institution of Engineers, Sri Lanka, 2021)

Railway transport plays a vital role in safely carrying away commuters and freights from one place to another, both short and long distances with comparatively low cost and high efficiency. Ballasted tracks and concrete ...
Influence of geosynthetic and rubber inclusions on shear and breakage behavior of rail track ballast.

Venuja, S.; Navaratnarajah, S. K. (International society for Soil Mechanics & Geotechnical Engineering, 2020)

Ballasted rail tracks and concrete slab tracks are the two major types of rail track structures all around the world. Due to the ease of construction and relatively low initial cost, ballasted tracks are popular compared ...
Shear and degradation behavior of rail track ballast contaminated with fines: An experimental study.

Navaratnarajah, S. K.; Venuja, S. (International society for Soil Mechanics & Geotechnical Engineering, 2020)

Rail transport is one of the highly demanded transport modes due to its safety, reliability and economic profits. The ballast layer, major component by weight and volume, effectively transmits the train exerted loads from ...
A current study on ballasted rail tracks in Sri Lanka.

Venuja, S.; Navaratnarajah, S. K. (Institution of Engineers, Sri Lanka, 2022)

Rail transport was introduced in Sri Lanka in the early 1860s for transporting coffee from estates to the port. Sri Lanka Railways (SLR) is the only rail transport organization in Sri Lanka which was established in 1864 ...
Review on Geosynthetic Inclusions for the Enhancement of Ballasted Rail Tracks

Venuja, S.; Navaratnarajah, S. K.; Bandara, C. S.; Jayasinghe, J. A. S. C. (Springer, 2021)

Currently, there is an increasing demand for rail transport from a growing and urbanizing population worldwide as it is a resource-efﬁcient transport system. Moreover, its popularity among people is due to safety, reliability ...
A laboratory investigation on the advancement of railway ballast behavior using artificial inclusions

Venuja, S.; Navaratnarajah, S. K.; Wickramasinghe, T. H. V. P.; Wanigasekara, D. S. A. (Springer, 2022)

Ballasted rail tracks are the most popular and conventional rail track foun- dation system primarily consists of ballast as a major portion by weight and volume. Ballast is a highly angular, coarser material with high ...
Numerical Study on the Shear Behaviour of Railway Ballast using Discrete Element Method

Venuja, S.; Navaratnarajah, S. K.; Jayawardhana, W. R. R.; Wijewardhana, P. H. L.; Nirmali, K.; Sandakelum, M. A. M. (Springer, 2023)

Rail transport is the most popular mode of transport where a large number of passengers and a large amount of freights are transported efﬁciently with econom- ical beneﬁts. Ballasted tracks are ...
Experimental and numerical study on the shear-strain behavior of ballast with different gradations.

Venuja, S.; Navaratnarajah, S. K.; Bandara, C. S.; Jayasinghe, J. A. S. C. (Springer, 2023)

Rockﬁll materials are widely used in many infrastructure constructions including earth dams, rail tracks, retaining walls, highways, etc. The major role of these coarse granular materials is to ...
Geotechnical engineering properties of peat stabilized with a combination of fly ash and well graded sand.

Venuja, S.; Mathiluxsan, S.; Nasvi, M. C. M. (Engineer: Journal of the Institution of Engineers, Sri Lanka, 2017)

Peat has several unfavourable characteristics such as low bearing capacity, high compressibility, high content of natural water and difficulty of access and thus is not suitable for Civil Engineering constructions. One of ...
Influence of type of sleeper–ballast interface on the shear behaviour of railway ballast: An experimental and numerical study.

Navaratnarajah, S. K.; Mayuranga, H. G. S.; Venuja, S. (MDPI, 2022)

The shear resistance at the sleeper–ballast interface of a ballasted track is an important contributor in maintaining track stability under faster and heavier axle loads where the ballast undergoes significant lateral ...
A Comparative Study of Hole Integrity Performance in Composite-Metal Stacks Using Coated and Uncoated Tungsten Carbide Drill Bits

Joy Mathavan, J.; Hafiz Bin Hassan, M.; Bin Mahmud, A. S. (Wiley Online Library, 2023)

This study aims to develop tetrahedral amorphous carbon nanocomposite layer coated tungsten carbide drill bits for single shot drilling of composite metal stack. Different coatings were tested for hole integrity performance ...
IoT Based ıntegrated smart home automatıon system

Satheeskanth, N.; Marasinghe, S. D.; Rathnayaka3, R.M.L.M.P.; Kunaraj, A.; Joy Mathavan, J. (Research gate, 2022)

The comfort of human in home can be categorized under several types. Among these categories, the most significant ones are the thermal comfort, which is related to ambient temperature and humidity, followed by the visual ...
IoT based guided fire fighting vehicle

Raafeek, A. R. M.; Satheeskanth, N.; Joy Mathavan, J.; Kunaraj, A. (IOP Publishing, 2022)

Fire accidents are occurring frequently nowadays in domestic and industrial environments with unpredictable climatic changes and human negligence. The proposed prototype is designed to detect such fire accidents and to ...
Smart traffıc controller based on traffıc densıty and prioritised emergency vehicle clearance.

Satheeskanth, N.; Mathushan, M.; Joy Mathavan, J.; Kunaraj, A.; Daisan, G. (Springer link, 2022)

Traffic lights play a key role in avoiding traffic congestion especially in cities in peak time. The traffic that built up in peak hours is the result of mismanagment of traffic in the off-peak hours is the bitter truth. ...

Now showing items 1-20 of 124

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