ERU - 1998http://dl.lib.uom.lk/handle/123/146712024-03-29T11:17:55Z2024-03-29T11:17:55ZProceedings of the Annual Symposium 1998 (Pre Text)http://dl.lib.uom.lk/handle/123/206422023-10-12T22:53:17Z1998-11-01T00:00:00ZProceedings of the Annual Symposium 1998 (Pre Text)
Hettiarachchi, P
1998-11-01T00:00:00ZInvestigation of wave reflection from coastal structuresHettiarachchi, SSLMirihagalla, PDhttp://dl.lib.uom.lk/handle/123/192372023-10-12T23:35:50Z1998-11-01T00:00:00ZInvestigation of wave reflection from coastal structures
Hettiarachchi, SSL; Mirihagalla, PD
Wave reflections at and within a coastal harbour may make a significant contribution to wave disturbance in the harbour. Reflected waves may lead to danger to vessels navigating close to structures and may cause mooring problems. Wave reflections may also increase local scour or general reduction in sea bed levels. In the design of breakwaters, seawalls and coastal revetments it is very important to estimate and compare the reflection performance of alternative structural types with respect to wave energy dissipation characteristics. This paper presents the results from a study of the reflection performance of a wide range of structures used in harbour and coastal engineering.
1998-11-01T00:00:00ZUse of reinforced brickwork for crack free loadbearing constructionJayasinghe, MTRMaharachchi, DPKhttp://dl.lib.uom.lk/handle/123/93112022-11-15T03:00:36Z1998-01-01T00:00:00ZUse of reinforced brickwork for crack free loadbearing construction
Jayasinghe, MTR; Maharachchi, DPK
Brickwork is usually used for single storey construction in Sri Lanka. It can also be used for loadbearing two storey construction. However, a majority of these structures suffer from the drawback of the formation of cracks few years after the construction. A majority of these cracks are due to thermal movement, creep and shrinkage of brick walls. Generally, these cracks are of small crack width. Nevertheless, those impair the serviceability of the structure since any cracks in brick walls cast doubt in the minds of the occupants about the safety of the structure. This is specially true for loadbearing two storey houses. It is possible to use reinforced brick work to minimise these cracks. It is shown that reinforced brickwork can be effectively used to take flexure and direct tension to minimise the occurrence of cracks. Extra cost involved with such use of reinforced brickwork is not appreciable.
1998-01-01T00:00:00ZThe use of saltern bitterns for manufacturing magnesia refractories.Fernando, WLWhttp://dl.lib.uom.lk/handle/123/93102022-11-14T09:43:58Z1998-01-01T00:00:00ZThe use of saltern bitterns for manufacturing magnesia refractories.
Fernando, WLW
In Srilanka there are salterns where bitterns are produced as potential magnesia compounds , from which magnesia can be precipitated , consolidated and heat treated under certain conditions to produce high quality magnesia pellets which are of similar quality to that produced in the U.K. This is confirmed by the microscopical, chemical and X-ray diffraction studies. This research describes the recovery of magnesia in the lab scale using the sea water bitterns ,from Hambantota salterns , which is presently discarded.
1998-01-01T00:00:00Z