THE PERFORMANCE OF PRETENSIONED PRESTRESSED CONCRETE BEAMS MADE WITH LIGHTWEIGHT CONCRETE
DOI:
https://doi.org/10.11113/mjce.v14.15647Keywords:
palm oil clinker lightweight concrete, lightweight aggregate, prestressed concrete beam, mix design, cracking, failureAbstract
A study on the behaviour of prestressed concrete beams made from clinker
aggregate has been carried out at the Faculty of Civil Engineering, UTM. In this
paper, the performance of prestressed lightweight concrete beam under two point
load is discussed and comparisons are made with normal weight prestressed
concrete beam. The clinker is incorporated into the concrete as a direct
replacement for both fine and coarse aggregates at 100% replacement level. The
use of clinker lightweight concrete was found to save the amount of the total dead
load up to 18.8%. The test results show that lightweight concrete using clinker
exhibit an almost similar pattern in cracking behaviour and failure modes. The
test results show that the prestressed lightweight concrete beams can resist
loading up to 90% of the normal prestressed concrete beams. The study also
shows that clinker lightweight concrete exhibit good performance and is suitable
to be used in prestressed concrete beam.
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