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Journal : Media Teknik Sipil

PENGARUH PENGEKANGAN GFRP TERHADAP KEKUATAN DAN DAKTILITAS KOLOM BETON BERTULANG PERSEGI AKIBAT BEBAN SIKLIK Karmila Achmad; Agoes SMD; Tavio .
Media Teknik Sipil Vol. 10 No. 2 (2012): Agustus
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jmts.v10i2.1789

Abstract

Karmila Achmad1, Agoes SMD2 & Tavio31Mahasiswa Program Magister Teknik Sipil Struktur Universitas Brawijaya, Malang dan Dosen Politeknik NegeriBalikpapan2 Guru Besar Teknik Sipil Struktur Universitas Brawijaya, Malang3Dosen Teknik Sipil Struktur-FTSP Institut Teknologi Sepuluh Nopember, SurabayaEmail : milabpp@yahoo.co.idABSTRACTThe aim of this research is to get improving of strength and ductility in column specimen giventhe GFRP strengthener (Glass Fiber Reinforced Polymer) toward with original column, by using thecyclic load as the fix representative of quake load. There are two specimens full scale used. Theyare C-1 (original column) and C-1G (column with GFRP strengthener 1 layer). From the researchgot Pmax sequentially is 278,9 kN and 372.4 kN, and dmax is 53.24 mm and 56.78 mm, each for C-1and C-1G. For C-1 column, the concrete gets damage in plastic hinge zone at drift ratio 3.5%indicated by bending of longitudinal steel bar and spalling of cover concrete. The test for C-1G endsin third cycle at drift ratio 5% and gets damage in fracture of GFRP in plastic hinge zone. Thedamage is the changing of resin color the circumferential direction in three spots. They are as longas 10, 11 and 18 cm. Ductility index taken on three positions are plastic hinge zone, column with ahalf high effective and as high as effective column. From the analyze result got ductility index C-1on the three positions are 1.65; 1.70; 1,97 and ductility index C-1G are 1,44; 1,44 and 1,38 each forplastic hinge zone, a half high effective and as high as effective columnKey words : ductility, GFRP, strength, external confinement, cyclic
METODE EKSPERIMENTAL PERKUATAN KOLOM BETON BERTULANG MENGGUNAKAN FRP Karmila Achmad; Agoes SMD; Tavio .
Media Teknik Sipil Vol. 12 No. 2 (2014): Agustus
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jmts.v12i2.2286

Abstract

METODE EKSPERIMENTAL PERKUATAN KOLOM BETON BERTULANG MENGGUNAKAN FRP Experimental Method Of Strengthening Concrete Columns Using FRPKarmila Achmad1, Agoes SMD2, Tavio31Jurusan Teknik Sipil Fakultas Teknik – Politeknik Negeri Balikpapan2Jurusan Teknik Sipil Fakultas Teknik – Universitas Brawijaya Malang3Jurusan Teknik Sipil Fakultas Teknik – Institut Sepulun Nopember SurabayaAlamat korespondensi: Jl Soekarno Hatta Km. 08, Balikpapane-mail: 1)milabpp@yahoo.co.idAbstractThe column is an important structure element because the failure of column will have direct impact to other structure components, so that the ruin of structural column is an important thing to be observed. The research use experimental method. The aim of this research is to get improving of strength and ductility in column specimen which is given the FRP strengthener (Fiber Reinforced Polymer) compared with original column. There are 3 specimens used. They are C-1 (original column), C-1G (column with GFRP strengthener 1 layer) and C-1C (column with CFRP strengthener 1 layer). From the research got the increasing Pmax toward original column is 33,52% and 54,97%, the increasing of dmax is 6,65% and 81,18%, also the increasing of Mmax is 32,41% and 55,36% each for C-1G and C-1C. Ductility indexes taken on three positions are plastic hinge zone, a half high of column effective and as high as column effective. From analyze result got the increasing of displacement ductility toward C-1 for C-1G is -34,20%, -28,46% and -12,74% and C-1C is 64,48%, 108,74% and 118,68%, each for plastic hinge zone, a half high of column effective and as high as column effective. In column C-1G happened the decreasing of ductility value because there has been destruction in column head when the test was running. Key words : Experimental method, FRP, RC, Strengthener columnAbstrakKolom merupakan elemen struktur penting karena kegagalan kolom akan berpengaruh langsung terhadap komponen struktur lainnya , sehingga kehancuran kolom struktural merupakan hal yang penting untuk dicermati . Penelitian ini menggunakan metode eksperimen . Tujuan dari penelitian ini adalah untuk mendapatkan meningkatkan kekuatan dan daktilitas dalam spesimen kolom yang diberi FRP penguat ( Fiber Reinforced Polymer ) dibandingkan dengan kolom awal . Ada 3 spesimen yang digunakan . Mereka adalah C - 1 ( kolom asli) , C - 1G ( kolom dengan GFRP penguat 1 lapisan ) dan C - 1C ( kolom dengan CFRP penguat 1 lapisan ) . Dari penelitian mendapat peningkatan Pmax menuju kolom awal adalah 33,52 % dan 54,97 % , peningkatan dmax adalah 6,65 % dan 81,18 % , juga meningkatnya Mmax adalah 32,41 % dan 55 , 36 % masing-masing untuk C - 1G dan C - 1C . Indeks daktilitas diambil pada tiga posisi yang zona sendi plastis , setengah tinggi kolom yang efektif dan setinggi kolom yang efektif . Dari hasil analisis mendapat peningkatan daktilitas terhadap - C 1 untuk C - 1G adalah -34,20 % , -28,46 % dan -12,74 % dan C - 1C adalah 64,48 % , 108,74 % dan 118,68 % , masing-masing untuk zona sendi plastis , setengah tinggi kolom yang efektif dan setinggi kolom yang efektif . Dalam kolom C - 1G terjadi penurunan nilai daktilitas karena sudah ada kerusakan di kepala kolom saat tes berjalan .Kata kunci : metode eksperimental , FRP , RC , kolom Strengthener
PASIR KANDILO DAN KERIKIL PETANGIS SEBAGAI MATERIAL LOCAL TANAH GROGOT DALAM CAMPURAN BETON Karmila Achmad
Media Teknik Sipil Vol. 13 No. 2 (2015): Agustus
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jmts.v13i2.2561

Abstract

PASIR KANDILO DAN KERIKIL PETANGIS SEBAGAI MATERIAL LOCAL TANAH GROGOT DALAM CAMPURAN BETONKandilo Sand And Gravel Petangis As Local Material Land Grogot In Mixed ConcreteKarmila AchmadJurusan Teknik Sipil Politeknik Negeri Balikpapan Alamatkorespondensi : Jl Soekarno Hatta Km. 08, Balikpapanemail: milabpp@yahoo.co.idAbstractIn the effort to utilize local material, some of Tanah Grogot people use mix concrete of Kandilo sand and Petangis Gravel instead of common material, Palu Sand and Palu Gravel. The characteristics of these local material have not been identified. The purpose of this research are to give data of Tanah Grogot local material’s characteristic and to get the highest concrete strength for mixing variation commonly used by Tanah Grogot people, Kalimantan Timur. There are 4 variations of mix-concrete that were used i.e. Palu Sand + Palu Gravel (PPKP), Palu Sand+Petangis Gravel (PPKG), Kandilo sand+Palu Gravel (PGKP), Kandilo sand + Petangis Gravel (PKG). The results of the test show that the best average concrete strength was received by PPKG, 32.78 MPa, and the lowest average concrete strength belong to PKG, 17.05 MPa.Keywords: Petangis gravel, local Material, Kandilo sand, Tanah GrogotAbstrakDalam upaya memanfaat material local sebagian masyarakat Tanah Grogot menggunakan campuran beton berupa pasir Kandilo dan kerikil Petangis disamping material yang umum digunakan, yaitu pasir Palu dan kerikil Palu. Untuk karakteristik dan kelayakan material local ini sebagai material bangunan belum dilakukan penelitian. Penelitian ini bertujuan untuk memberikan data terkait karakteristik material local tanah grogot dan mendapatkan kuat tekan terbaik untuk perpaduan material bangunan yang umum digunakan oleh masyarakat Tanah Grogot, Kalimantan Timur. Ada 4 variasi campuran beton yang akan digunakan yaitu Pasir Palu+Kerikil Palu (PPKP), Pasir Palu+Kerikil Petangis (PPKG), Pasir Kandilo+Kerikil Palu (PGKP), Pasir Kandilo+Kerikil Petangis (PKG). Dari hasil pengujian diperoleh kuat tekan rata-rata terbaik pada variasi sampel PPKG yaitu 23,78 MPa dan kuat tekan rata-rata terendah adalah variasi sampel PKG yaitu 17,05 MPa.Kata kunci : Kerikil Petangis, Material local, Pasir Kandilo, Tanah Grogot