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Experimental study on structural performance of precast concrete pipe reinforced with gfrp /See Huey Shen

Experimental study on structural performance of precast concrete pipe reinforced with gfrp_See Huey Shen_A9_2011_NI
Komposit polimer bertulang fiber (FRP) telah menjadi bahan pembinaan praktikal alternatif untuk menggantikan tetulang keluli sebagai penguat pada struktur konkrit disebabkan nisbah kekuatan-kepada-berat yang tinggi. Penyelidikan merupakan sebuah kerja eksperimental untuk menyiasat perbezaan dalam keupayaan menanggung beban, lebar retak, pola retak dan lokai retak antara paip konkrit pra-tuang (900mm dan 1200mm) yang menggunakan keluli dan komposit polimer bertulang gentian kaca GFRP. Perilaku struktur dapat dipeajari dalam penyelidikan ini dengan menimbangkan pengaruhan lebar, ketebalan dan jarak dari komposit GFRP dan dua tatarajah jarak, lebar dan tebal GFRP telah dipelajari. Perbandingan antara perilaku struktur dari paip konkrit bertulang dengan keluli dan GFRP jenis orthogonal telah dilakukan melalui uji penghancuran. Paip konkrit bertulang GFRP 900mm diameter tidak dapat dihasilkan disebabkan proses fabrikasi yang tidak sesuai. Mengaji semula keptusan ujian penghancuran, kekuatan penghancuran paip konkrit yang bertetulangkan sangkar keluli adalah tertinggi berbanding dengan sangkar GFRP jenis ortogon. Spesimen sangkar GFRP jenis ortogon mampu memenuhi keperluan beban penghancuran bagi paip DN 1200 kelas S. Dari segi cirri-ciri retakan, retakan paip konkrit bagi specimen bertetulangkan kelili berlaku secara beperingkat dengan kenaikan beban penghancuran. Sebaliknya, kadar retakan bagi specimen bertetulangkan GFRP berlaku secara pesat semasa peningkatan beban penghancur. Secara keseluruhannya, keputusan menunjukkan bahawa spesimen sangkar GFRP jenis ortogon mampu memenuhi keperluan beban penghancuran bagi paip DN 1200 kelas S. ___________________________________________________________________________________ Fibre-reinforced polymer (FRP) has become a practical alternative construction material for replacing steel bars as reinforcement in concrete structures due to its high strength-to-weight ratio of FRP. This study deals with an experimental work to investigate the difference in loading carrying capacity, crack width, crack pattern and crack location between precast concrete pipes (900mm and 1200mm) reinforced with steel and GFRP composites. The effect of the width, thickness and the spacing of the GFRP composites on the structural behavior is studied. Orthogonal layout of GFRP reinforcement with two configurations of spacing, width and thickness of GFRP has been studied. Comparison between structural behaviour of concrete pipes reinforced with steel and GFRP cage has been carried out through crushing test. 900 mm diameter GFRP reinforced concrete pipe was found unable to be fabricated using spinning process due to low rigidity of the cage. From the crushing test result, the crushing strength of control specimens reinforced with steel cage is found to be higher when compared with orthogonal type GFRP cages. Orthogonal type GFRP reinforced specimen is found to be able to meet the requirement of the crushing load for DN 1200 Class S concrete pipe. In term of cracking behaviour, the cracking of steel reinforced specimen increases gradually with increment of crushing load. Conversely, for the orthogonal type GFRP reinforced specimen, the cracking rate increases rapidly when increasing the crushing load after the initiation of first crack. The result of the test indicated that the orthogonal type GFRP reinforced specimen is able to meet the requirement of the crushing load for DN 1200 Class S concrete pipe.
Contributor(s):
See Huey Shen - Author
Primary Item Type:
Final Year Project
Language:
English
Subject Keywords:
Fibre-reinforced polymer ; steel bars ; concrete
First presented to the public:
4/1/2011
Original Publication Date:
6/9/2020
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 95
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2020-06-09 12:41:38.597
Submitter:
Nor Hayati Ismail

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Experimental study on structural performance of precast concrete pipe reinforced with gfrp /See Huey Shen1 2020-06-09 12:41:38.597