Mohd. Azizan Bin Ajimin
Metric No: BK10110164
Topic: Damage Concrete Structure in West Coast Sabah due to Alkali Silica Reaction (ASR)
Abstract: A study has been conducted at West Coast Sabah to identify and to testify the presence of Alkali Silica Reaction (ASR) on existing concrete structures. Alkali silica reaction is one of the most recognized deleterious phenomenons in concrete that results in excessive expansion, cracks, loss in mechanical properties and serviceability problems. This paper reports overview of alkali-silica reactivity (ASR) in concrete including background, chemistry behind ASR, factors affecting ASR, and symptoms of ASR. The structures that susceptible to ASR were evaluated using on-site test which is Chemical Test and Non-Destructive Test such as Rebound Hammer Test and Ultra Pulse Velocity (UPV) Test.