Browsing by Author "De Silva, SD"

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Non-destructive evaluation of strength gain of ordinary portland cement mortar by ultrasonic pulse velocity method

De Silva, SD; Sivahar, V [Conference-Abstract]

This paper presents results of the study of ultrasonic pulse velocity and compressive strength of ordinary Portland cement mortar. Objectives of this study are to determine correlations between ultrasonic pulse velocity ...
The role of the mottled water hyacinth weevil (neochetina eichhorniaes on biological control of water hyacinth in Sri Lanka

Gamage, NPD; Jayaweera, MW; De Silva, SD; Kasige, AP [Conference-Extended-Abstract]

Water hyacinth (Eichhornia crassipesi has become one of the most obnoxious freshwater weeds \~ith numerous widespread infestations occurring in the North Western. Central and Southern provinces in Sri Lanka. Water hyacinth ...

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