Journal of the Rubber Research Institute of Sri Lanka
Permanent URI for this collectionhttps://dl-rri.nsf.gov.lk/handle/1/1399
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Item Preparation and uses of cyclised rubber and of chlorinated rubber(Rubber Research Institute. Agalawatta, 1973) Nadarajah, M.; Narangoda, H.; Balasingham, C.G.; Kirubakaran, J.K.; Jayasinghe, P.P.Item The use of papain as a biological coagulant for natural rubber latex(Rubber Research Institute. Agalawatta, 1973) Nadarajah, M.; Yapa, P.A.J.; Balasingham, C.G.; Kasinathaii, S.Item The use of natural rubber latex resin blends as an adhesive for plywood(Rubber Research Institute. Agalawatta, 1972) Weeraratne, W.G.; Nadarajah, M.; Eliatamby, D.A.R.; Amarasinghe, U.P.P.; Liyanage, N.Item Easy processing natural rubber(Rubber Research Institute. Agalawatta, 1972) Nadarajah, M.; Narangoda, H.Item Suggested improvements in the manufacture of Ceylon natural rubber(Rubber Research Institute. Agalawatta, 1971) Veerabangsa, M.T.; Nadarajah, M.Item Possibilities of bacterial coagulation in raw rubber manufacture(Rubber Research Institute. Agalawatta, 1971) Satchuthananthavale, R.; Satchuthananthavale, V.; Nadarajah, M.; Amarasinghe, I.Item Road performance studies and an investigation of some problems associated with rubberised bitumen road construction(Rubber Research Institute. Agalawatta, 1971) Weeraratne, A.; Nadarajah, M.Item Some suggested improvements in the grading of pale crepe(Rubber Research Institute. Agalawatta, 1971) Nadarajah, M.; Rajasingham, M.; Muthukuda, D.S.; jayasinghe, P.P.Item The use of rubber for improvement of impact resistance in ferrocement boats(Rubber Research Institute. Colombo, 1979) Nadarajah, M.; Fernando, M.R.N.; Fernando, M.A.U.G.; Dahanayake, P.Item Development of natural rubber latex Portland cement mixes for engineering applications(Rubber Research Institute. Agalawatta, 1978) Nadarajah, M.; Fernando, U.G.The deficiency in properties when portland cement is used in mixes with natural rubber latex is due to non-rubber substances and especially sugars found in latex serum. These non-rubber substances could be reduced by centrifugation and further by dilution with water and recentrifugation. A rubber/cement ratio of (1:11/2)cement sand mortar could be used up to 0.03perc. for field latex, up to 0.10perc. for centrifuged latex without drastically impairing physical properties; on the other hand some improved properties are obtained. The latices could be prevulcanised with vulcanising chemicals without serious reduction in strength when compared with the unvulcanised latices. The incorporation of natural rubber latex in 'Wirecon' boat building material has shown that appreciable improvement in impact strenth is obtained by the incorporation of the rubber latex.