Stability of a sand spit due to dredging in an adjacent creek

Patgaonkar, Rupali S.; Ilangovan, D.; Vethamony, P.; Babu, M.T.; Jayakumar, S.; Rajagopal, Meyyappa Devan

doi:10.1016/j.oceaneng.2006.02.003

Cited by 6 publications

(2 citation statements)

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“…The ever-growing construction industry suffers due to paucity of the natural fine aggregate, the river sand. Extensive utilization of river sand [1] is restricted in many countries as it caused deepening of the riverbed depth [2], increased salinity in the ground water and the reduction in the ground water table [3]. Hence, researchers are trying to find alternate fine aggregate materials.…”

Section: Introductionmentioning

confidence: 99%

Effect on the properties of fresh and hardened concrete made using fly ash geopolymer sand

Thankam

Neelakantan

Gnanaraj

2021

IRASE

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Fly ash-based geopolymer fine aggregate is a potential replacement material for the natural river sand as it has similar physicochemical properties. This paper reports the experimental investigation of a study conducted using this fine aggregate in concrete with a focus on the properties of fresh and hardened concrete. The geopolymer fine aggregate was developed by air curing process and oven curing method. The oven curing method yielded relatively better mechanical properties in concrete specimens. The oven curing results in better behavior at later age also. Laboratory tests were conducted to ascertain the fresh concrete density, slump value, hardened concrete density, compressive strength, tensile strength, and flexural strength of the concrete specimens. The microstructure of the concrete specimens was analyzed using scanning electron microscope which indicated the agglomeration of the fly ash particles with few voids demonstrating the higher water adsorption capacity of the same. The unreacted particles noted in the microstructure later tend to merge with the lime obtained from the hydration of cement so as to develop improved later age mechanical strength. The results on mechanical properties of the concrete indicate much similar results to that of the concrete developed with the normal river sand, which confirms that the geopolymer sand is an ideal replacement choice for natural river sand.

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Section: Introductionmentioning

confidence: 99%

Effect on the properties of fresh and hardened concrete made using fly ash geopolymer sand

Thankam

Neelakantan

Gnanaraj

2021

IRASE

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“…In this study, dynamics behind erosion are discussed based on the southwest and northeast monsoon wave patterns and alignment of the ship with respect to the shoreline. Rupali et al (2007) studied the spit stability adjacent to the Jatadharmohan creek based on hydrodynamic conditions of the creek and slope stability. Studies were conducted to understand nearshore erosion, deposition, sediment budget and long-shore transports off Paradip area (Ananth and Sundar 1990;Sarma and Sundar 1988).…”

Section: Introductionmentioning

confidence: 99%

Decadal shoreline assessment using remote sensing along the central Odisha coast, India

et al. 2015

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One of the major requirements of planning coastal protection works is to understand the processes of erosion, deposition, sediment transport, flooding and sea level changes which continuously alter the shoreline. Significant erosion can affect the stability and productivity of aquatic environment which may have severe implications for coastal inhabitants. The middle coastal plains of Odisha State on the east coast of India were investigated for morphological assessment of shoreline. Accurate demarcations of shorelines were carried out at parts of Odisha coast specifically along Gahirmatha, Paradip and coast above Devi River to quantify erosion and accretion at annual to decadal scale for the years 1990, 2000 and 2012. Satellite-derived remote sensing data (Landsat and IRS P6) were used in the study. Digital shoreline analysis system discovered the eroded and accreted parts of the study area. Gahirmatha and coast above Devi River experienced heavy erosion during 2000-2012 compared with 1990-2000, whereas Paradip coast has comparatively undergone accretion during 2000-2012. Some accreted spots are identified nearby river mouths, which are attributed to heavy accretion of eroded materials by the action of sediment transport. The detailed analysis reveals a maximum erosion of 124, 33 and 154 m in a decade at Gahirmatha, Paradip and coast above Devi River, respectively. Southern parts of Gahirmatha coast showed highly dynamic behavior near Hukitola Bay and Barrier Island and are acting as a natural breakwater to conserve the shoreline. This region had undergone severe geomorphologic changes due to natural as well as human interventions and poses a threat. This coast exhibits unique reasons for erosion with various degrees of combinations of sediment depletion, human activities, high frequency of cyclones and floods, sea level rise, etc. This study concludes that the shoreline of Odisha coast is under heavy erosion and needs scientific and management attention.

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On improved nearshore bathymetry estimates from satellites using ensemble and machine learning approaches

Kumar

Venkateswarlu

Gireesh

et al. 2021

Advances in Space Research

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Stability of a sand spit due to dredging in an adjacent creek

Cited by 6 publications

References 0 publications

Effect on the properties of fresh and hardened concrete made using fly ash geopolymer sand

Effect on the properties of fresh and hardened concrete made using fly ash geopolymer sand

Decadal shoreline assessment using remote sensing along the central Odisha coast, India

On improved nearshore bathymetry estimates from satellites using ensemble and machine learning approaches

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