PERBAIKAN DAN PERKUATAN LENTUR KOLOM DENGAN BETON RESIN POLIESTER (POLYESTER RESIN CONCRETE)
Concrete column structures damages due to flexural moment needs to be repaired and strengthened to avoid of sudden failure by applying appropriate methods. The method applied in this study was retrofitting by applying polyester resin concrete. In order to know the effect of polyester resin concrete...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2013
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/122719/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=62823 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | Concrete column structures damages due to flexural moment needs to
be repaired and strengthened to avoid of sudden failure by applying
appropriate methods. The method applied in this study was retrofitting by
applying polyester resin concrete. In order to know the effect of polyester resin
concrete against axial load capacity, stiffness, ductility and the damage pattern
of columns by eccentrically loaded, experimental laboratory was carried out.
In this study, three column specimens be tested. The dimension of the
specimen is 150 mm x 150 mm and the high of the column are 1200 mm with
the effective high are 600 mm and 600 mm for corbel. The column specimen
have a fixed eccentricity of 50 mm. First, initial column tested before yield
point of reinforcing bar reached. Further, retrofitting applied to each initial
column specimen using normal concrete and polyester resin concrete with the
level of resin 15% and 20%, respectively. Retrofitting column tested again with
the same loading of initial column until it reaches the collapse load. The result
of experiment compare to analysis method by Nawy and Whitney which
represent analysis of normal concrete column capacity.
The result showed that the optimum levels of resin to be use 20%
because easy to work compared to 15% resin. Further, compressive strength
obtained from the resin level at 15% and 20% are 82.82 MPa and 76.65 MPa,
respectively. Strength of KR-ii decreased about 33.523%. The strength of KR-
15ii and KR-20ii increased 5.08% and 24.827% respectively compared to
initial column. Stiffness of specimen�s column KR-ii. KR-15ii and KR-20ii
decreased about 76.22%, 24.50% and 37.65%, respectively from initial
column. Furthermore, ductility of KR-ii, KR-15ii and KR-20ii decreased about
1.512, 1.250 and 2.50, respectively. The changes of ultimate capacity load of
KR-ii, KR-15ii and KR-20ii by Nawy Method respectively -26.54%, 12.66%
and 13.83%, whereas the method of Whitney respectively -17.68%, 26.25%
and 27.56%. |
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