Nana Ertha Sualim
Metric No: BK10110190
Topic: ASSESSMENT STUDY ON ALKALI SILICA DAMAGE OF STUDENT ACCOMODATION BUILDINGS IN UMS
Abstract: Alkali Silica Reaction (ASR) can cause serious expansion and cracking in concrete, resulting in major structural problems. Three major factors of ASR in concrete were the alkalis contained in the pore solution, reactive amorphous or poorly crystallized silica present in certain aggregates, and water. Environmental relative humidity, porosity of the concrete, and presence of mineral admixtures were also the factors of ASR occurrence. The objectives of this study are to investigate the existence of Alkali Silica Reaction (ASR) damage on UMS hostel buildings, and to evaluate the performance structure affected by ASR. Testing methods such as chemical test (staining method) and non – destructive testing (Rebound Hammer and Ultrasonic Pulse Velocity) have been conducted on site which is located at the hostel buildings in UMS. Existence of ASR in hostel buildings in UMS has been proven as 89% of the selected locations showed positive result of ASR. The locations that were proven to be positive ASR have poor performance in compressive strength and quality.