KELAKUAN SAMBUNGAN SAMBAT BERSAMA BAR PILIN DAN BAR MEMANJANG DALAM DINDING KONKRIT PRATUANG SHUHAIMI BIN SHAEDON UNIVERSITI TEKNOLOGI MALAYSIA

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KELAKUAN SAMBUNGAN SAMBAT BERSAMA BAR PILIN DAN BAR MEMANJANG DALAM DINDING KONKRIT PRATUANG SHUHAIMI BIN SHAEDON UNIVERSITI TEKNOLOGI MALAYSIA

KELAKUAN SAMBUNGAN SAMBAT BERSAMA BAR PILIN DAN BAR MEMANJANG DALAM DINDING KONKRIT PRATUANG SHUHAIMI BIN SHAEDON Tesis ini dikemukakan sebagai memenuhi syarat penganugerahan ijazah Sarjana Kejuruteraan (Struktur) FAKULTI KEJURUTERAAN AWAM UNIVERSITI TEKNOLOGI MALAYSIA DISEMBER 2012

iii Untuk isteri tersayang, Zulhaimah Mohd Isa, Ayahanda dan bonda serta anak-anak, terima kasih atas segala sokongan dan dokongan yang diberikan oleh kalian selama ini. Moga Allah sahaja yang membalas jasa baik kalian semua.

iv PENGHARGAAN Alhamdulillah syukur kepada Illahi di atas kekuatan yang diberikan kepada saya untuk menyelesaikan pengajian di peringkat sarjana ini. Terima kasih yang tidak terhingga juga kepada penyelia saya, P.M. Dr. Ahmad Baharuddin Abd Rahman dan Dr. Izni Syahrizal Ibrahim atas bantuan dan sokongan yang berterusan serta idea-idea dan cadangan yang bernas untuk saya menambah baik penulisan tesis ini. Saya juga ingin merakamkan jutaan terima kasih kepada pihak CREAM untuk bantuan dana melalui Vot 73713 serta kerjasama yang diberikan selama ini. Tidak dilupakan juga kepada staf-staf dan juruteknik Makmal Struktur dan Bahan Fakulti Kejuruteraan Awam, UTM atas bantuan yang diberikan sepanjang saya menjalankan ujikaji di makmal seterusnya secara tidak langsung membantu saya dalam menyiapkan tesis ini. Akhir sekali, penghargaan yang tidak terhingga kepada ayahanda dan bonda, isteri, serta ahli keluarga kerana tidak jemu-jemu memberikan sokongan dan dokongan ketika saya senang atau susah. Moga Allah memberikan ganjaran yang terbaik atas kebaikan kalian semua. InsyaAllah.

v ABSTRAK Kekuatan sambungan elemen struktur konkrit pratuang adalah faktor utama yang memainkan peranan penting dalam Sistem Binaan Berindustri. Pelbagai jenis sambungan telah dihasilkan oleh pengkaji-pengkaji terdahulu untuk memperbaiki sambungan yang sedia ada di pasaran. Kajian ini dijalankan untuk membangunkan penyambung lengan sambat baru, menggunakan bar pilin dan bar memanjang, yang boleh menghasilkan kekuatan ikatan setanding dengan kapasiti tegangan bar yang diperkukuhkan. Dalam fasa pertama kajian, 52 spesimen telah diuji dibawah beban tegangan sehingga mencapai kegagalan. Berdasarkan kajian yang dijalankan, spesimen ES-65-4-200 dengan panjang tambatan bar 200 mm, diameter dalaman bar pilin 65 mm, empat batang bar memanjang Y10 di dalam bar pilin, dan menggunakan bahan pengisi turap telah dipilih. Dalam fasa ke-2, penyambung lengan sambat terpilih digunakan dalam sistem panel dinding konkrit pratuang. Kemudian, penyambung diuji di bawah beban ricih untuk mengkaji prestasi sambungan. Dalam fasa ini, tiga spesimen monolitik, tiga spesimen dengan sambungan Nisso Master Builders (NMB), dan tiga spesimen dengan penyambung yang dicadangkan telah diuji. Prestasi yang ditunjukkan oleh sambungan dibawah beban tegangan dan ricih dinilai berdasarkan kapasiti beban muktamad, sesaran, terikan, tegasan dan mod kegagalan. Keputusan menunjukkan bahawa spesimen dinding yang menggunakan penyambung bar pilin dan bar memanjang, ES-65-4-200 telah mencapai kelakuan struktur yang memuaskan dengan kapasiti ricih muktamad 28% lebih tinggi daripada dinding monolitik dan dinding sambungan NMB. Keputusan ini menunjukkan bahawa gabungan bar pilin dan bar memanjang berupaya meningkatkan prestasi sambungan lengan sambat dalam struktur dinding konkrit pratuang.

vi ABSTRACT The strength of connections in precast concrete structure elements is the main factor that plays an important role in the Industrialised Building System. Various types of connections have been developed by previous researchers to improve the existing connections in the market. This study was conducted to develop a new splice sleeve connector, using spiral and elongated bar, which can produce comparable bond strength with the tensile capacity of reinforced bars. In the first phase of the study, 52 specimens were tested under tensile loads until all specimens reached their ultimate failure state. Based on the study conducted, ES-65-4-200 specimens with bar embedment length of 200 mm, spiral inner diameter of 65 mm, four elongated bars of Y10 inside the spiral bar, and use of grout was selected. In phase 2, the selected splice sleeve connector was used in the precast concrete wall panel system. Then, the connector was tested under shear loads to study the connection s performance. In this phase, three monolithic specimens, three specimens with Nisso Master Builders (NMB) connectors, and three specimens with the proposed connector were tested. The performance of connections under tensile and shear loads was evaluated based on the ultimate loading capacity, displacement, strain, stress and failure mode. The results show that the wall specimens using spiral and elongated bar connectors, ES-65-4-200 achieve satisfactory structural performance with the ultimate shear capacity 28 % higher than monolithic wall and NMB wall connection. These results indicate that the combination of spiral and elongated bar is able to improve the performance of the splice sleeve connections in precast concrete wall structures.