DSpace Repository

Investigation of Chloride Ion Penetration Resistance of Silica Fume Mix Concrete

Show simple item record

dc.contributor.author Krishnathilaka, R.K.S.
dc.contributor.author Perera, L.A.
dc.contributor.author Amarakoon, A.M.M.W.
dc.contributor.author Udamulla, K.M.L.A.
dc.contributor.author Karunananda, P.A.K.
dc.date.accessioned 2015-12-01T08:39:17Z
dc.date.available 2015-12-01T08:39:17Z
dc.date.issued 2015-12-01T08:39:17Z
dc.identifier.citation Krishnathilaka, R.K.S., Perera, L.A., Amarakoon, A.M.M.W., Udamulla, K.M.L.A., & Karunananda, P.A.K. (2015). Investigation of Chloride Ion Penetration Resistance of Silica Fume Mix Concrete. Proceedings of the 71st Annual Sessions of Sri Lanka Association for the Advancement of Science (Part I), 37.
dc.identifier.issn 13910248
dc.identifier.uri http://dr.lib.sjp.ac.lk/handle/123456789/2027
dc.description.abstract Sri Lanka, being an island with well developed coastal areas, has a large number of reinforced concrete (RC) structures in the coastal zone. Chloride attack on such concrete structures has become a significant issue in the construction sector and it has become necessary to curtail the adverse effects of chloride ions which lead to corrosion of reinforcing steel and subsequent reduction in the strength, serviceability, and aesthetics of structures and finally the failure of structures. The level of chloride ion penetration is related to concrete permeability and with increasing permeability, an increase of chloride ion penetration occurs. Studies have indicated that the addition of materials such as fly ash, ground granulated blast furnace slag and silica fume in certain proportions in the mix reduces the penetrability of concrete. Hence, a possibility exists for the retardation of chloride ion penetration under such conditions. In this study, the chloride ion penetration resistance of silica fume mix concrete was examined. The physical properties of silica fume (fineness, specific gravity and water absorption) were determined in the study. Concrete mix of Grade 25 was tested according to the BS Mix Design Method. Specimens with Ordinary Portland Cement (OPC) concrete and specimens with OPC replaced by silica fume at the levels of 5%, 10% and 15% by weight of cement were tested. Compressive strength tests (according to BS 1881-116-1983) were carried out on concrete cubes of size 150 mm x 150 mm x 150 mm. Workability was measured by the slump test, compacting factor test and VB test. Chloride Ion Penetration test was carried out according to the procedure given in ASTM C-1202. The results indicated that the workability reduces with the increase of silica fume for Grade 25 concrete. The compressive strength of silica fume mix concrete decreased with the increase of silica fume content in the concrete. However, the results of Chloride Ion Penetration test revealed that the addition of silica fume reduced the chloride ion penetration indicating a reduced level of chlorine attack in concrete. en_US
dc.language.iso en en_US
dc.publisher Sri Lanka Association for the Advancement of Science, Colombo 07
dc.subject Chloride penetration en_US
dc.subject silica fume en_US
dc.subject concrete en_US
dc.title Investigation of Chloride Ion Penetration Resistance of Silica Fume Mix Concrete en_US
dc.type Article en_US
dc.date.published 2015

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account