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All Journal SMARTek JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR MEKTEK
Shyama Maricar
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Civil Engineering, Building, Construction & Architecture Education

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PERILAKU DAN KAPASITAS LENTUR BALOK BETON BERSERAT BAMBU Rivani, Agus; Maricar, Shyama
SMARTek Vol 7, No 4 (2009)
Publisher : SMARTek

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Abstract

Tujuan Penelitian studi adalah menetahui perilaku dan kapasitas lentur balok beton yangmemakai serat bambu. Ukuran benda uji balok beton yang telah dibuat adalah panjang 500mm, tinggi 100 mm dan lebar 100 mm, yang mengandung serat bambu 0,25%, 0,5%, 0,75% dan1% terhadap berat fraksi normal beton. Satu variasi lainnya dibuat tanpa serat bamboo sebagaiparameter pembanding. Serat bambu yang digunakan dalam eksperimen ini adalah jenisBambu Apus (Giganthochloa Apus Kurz) yang diambil secara acak. Uji bending telah dilakukandengan empat titik pembebanan.Hasil Penelitian ini menunjukkan bahwa dengan serat bambu pada balok beton berpengaruhpada regangannya. Rasio regangan bending maksimum balok beton normal terhadap balokbeton serat bambu adalah 1: 1,314. Penelitian ini menunjukkan bahwa regangan bending daribalok dengan serat bambu adalah lebih baik dibanding dengan balok beton normal.Kata Kunci : Serat Bambu, Balok Beton, Bambu Apus
PEMANFAATAN CAMPURAN MORTAR DAN PARTIKEL KAYU SEBAGAI ELEMEN INTI BALOK BETON KOMPOSIT Maricar, Shyama; Nirmalawati, Nirmalawati; Rivani, Agus
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Lightweight concrete has ability to increase workability and reduce structure load such as gravity and earthquake loads. Therefore lightweight and adequately rigid structural system is required.  Based on efficiency of material application and adaptation optimization to the stress distribution system, composite system become one alternative that can be utilize, especially on beam structure. In this case, collaboration between lightweight concrete and ordinary concrete will be the deciding factor to achieve the objectives mentioned above. To construct lightweight concrete, timber particles obtained from sawmill industrial waste with density of 0,35 – 0.65 gr/cm3 will be highly possibly to utilize. This research aims to obtain the composition of concrete and timber particles mix that its strength can be measured in order to get effective composite concrete beam. A number of tests to the mix of concrete and timber particles were conducted to find out its pressure strength, tensile strength and elasticity, in order to get the percentage of timber particles used in concrete that will be used to create composite concrete with ordinary concrete. Sawmill and furniture industrial waste in form of timber particles can be utilized as material to create lightweight concrete which was limited only to nonstructural element. Keyword  : Normal/Ordinary concrete,mortar concrete ,coconut timber particles
PENGARUH BAHAN TAMBAH PLASTIMENT-VZ TERHADAP SIFAT BETON Maricar, Shyama; Tatong, Burhan; Hasan, Hajatni
MEKTEK Vol 15, No 1 (2013)
Publisher : MEKTEK

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Concrete mixture for structure of the building is expected to according to the quality and specifications desired. With the addition of admixtures materials used for concrete mix, it is necessary to know the type, properties and benefits of admixture produced by various companies. Concrete used In this study were added admixtureof Plastiment-VZ for characters investigated.In this study used two variations of concrete, ie normal concrete and concrete with the addition PlastimentVZ with usage percentage of 0.20%, 0.40% and 0.60% of the weight of the cement used in normal concrete. Cylindrical specimens used for compressive strength testing with a total of 3 pieces for each test.The test results obtained average compressive strength of normal concrete (f'cr) of 27.554 MPa, and for concrete with the addition of-VZ Plastiment of 0.20% obtained an average compressive strength, f'cr = 29.252 MPa, the concrete with the addition of Plastiment-VZ 0.40%, obtained f'cr = 30.951 MPa, whereas the addition of 0.60% for the compressive strength at 28 days obtained at 32.083 MPa.Keywords: Compressive strength, Plastiment-VZ
STUDI PEMANFAATAN PARTIKEL KOMPOS UNTUK PEMBUATAN BATAKO RINGAN Maricar, Shyama; Chauf, Kusnindar Abd.
MEKTEK Vol 13, No 1 (2011)
Publisher : MEKTEK

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Abstract

One effort to reduce the weight of the building is through the use of light particles in the concrete or mortar.For that particles of compost to be one alternative to be used. Utilization of compost particles directly willreduce the effects of environmental pollution due to garbage. Technically, in some cases the strength ofconcrete is not a determining factor but rather the ductility. Therefore in this study will be reviewed andfurther analyzed the mechanical properties of lightweight concrete that uses compost particles as basicmaterials. Mechanical properties and tensile strength referred to is the compressive strength, with normalmortar as a comparison.Based on the results of the weight of the material obtained gr/cm3 mortar respectively, cement 1.25, sand1.60, 0.31 and compost particles with water content 12%. In this case the effect of adding compost is adecrease in compressive strength of 48.74%, 68.78% decrease in tensile strength and weight reduction of9.85%. In this case the application in the manufacture of bricks is still possible, if based on a minimumcompressive strength requirement. The composition of lightweight concrete blocks with a mixture of 3%addition of compost particles are 2Semen: 6.25 Sand: 4Kompos: 2.5 water, which will produce concreteblocks with a weight of 1.89 gr/cm3 and compressive strength 7.7 MPa
PANEL BETON BERTULANGAN BAMBU SEBAGAI ALTERNATIF BAHAN KONSTRUKSI Maricar, Shyama; Hasan, Hajatni; Chauf, Kusnindar Abd.
MEKTEK Vol 14, No 3 (2012)
Publisher : MEKTEK

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Abstract

The use of natural materials for construction purposes should be developed. Special reinforced concrete construction, in some cases, the compressive strength is not a determining factor, but rather ductility. On the other hand, bamboo is a natural material has a ductile properties sufficient to be used as reinforcement. For this type of bamboo lear, some properties that are important to note is the compressive strength , σ//= 39.89 MPa,  σ┴ = 5.55 MPa, Shear strength is 7.644 MPa  and tensile strength is 207.523 MPa. In addition, the physical properties of mortar material used is weight of contents of cement is 1.25 gr/cm3, weigtht ofcontent of sand is 1.60 gr/cm3.From the test results it can be concluded that the test samples for concrete mix bamboo panel with division 1 cement and 4 sand did not change significantly so that the maximum load obtained for testing age from 7 days to 21 days also resulted in maximum load that is not much different. Thus the utilization of bamboo reinforced concrete panels for the purpose of the wall can be done, although it still requires further development.
PERENCANAAN PELAT BANGUNAN GEDUNG DENGAN METODE MARCUS Maricar, Shyama
MEKTEK Vol 7, No 3 (2005)
Publisher : MEKTEK

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Abstract

This paper explained more circumstantial of planning lisp at a building by using Method of Marcus, load and bone volume of the lisp were calculated by using method Marcus. In this method, the flatten load is calculated using tables and the point load is calculated with formula and table.The result shows that by using formula 1,2 MD + 1,6 ML of combination load, the maximum encumbering values were obtained for Mlx, Mly,Mtx, Mty.From the reinforcement calculation, the reinforcement of field in x direction use Ø 12 – 150 mm and for the fulcrum use Ø 12 – 150 mm. In y direction, reinforcement of the field and the fulcrum use Ø 14 – 150 mm. For the convenience, The reinforcement with Ø 14 – 150 mm is used for x and y direction.
PERENCANAAN KONSTRUKSI TURAP SEBAGAI PENGGANTI DINDING PENAHAN (STUDI KASUS JALAN LINGKAR DONGGALA) Martini Martini; Shyama Maricar; Hendra Setiawan
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 2, No 2 (2012)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Jalan Lingkar Donggala menggunakan dinding penahan yang berbentuk silinder atau biasa disebut sumuran. Proses pemasangan atau pelaksanaan pondasi sumuran umumnya dalam kondisi kering, namun lokasi jalan lingkar berada di daerah pantai. Kondisi ini akan menghambat proses pelaksanaan atau pemasangan pondasi sumuran, karena adanya pengaruh air laut dan proses pasang surut. Tujuan penelitian ini adalah untuk mengetahui desain turap yang akan digunakan meliputi dimensi turap, kedalamam pemancangan, dan jenis turap yang akan digunakan.Hasil perhitungan dari perencanaan konstruksi turap dengan dua kondisi permukaan air laut. Pada saat muka air normal didapatkan kedalaman pemancangan Daktual = 3,001 m dengan tipe turap PS-28. Kondisi pada saat air surut didapatkan kedalaman pemancangan Daktual = 3,393 m dengan tipe turap PS-28. Berdasarkan hasil perhitungan kedalaman pemancangan dari kedua kondisi tersebut, maka yang sebaiknya dilaksanakan adalah kedalaman pemancangan pada kondisi air surut yaitu Daktual = 3,393 m dan tipe turap adalah PS-28
Co-Authors Agus Rivani Burhan Tatong Hajatni Hasan HENDRA SETIAWAN Kusnindar Abd. Chauf Martini Martini Nirmalawati Nirmalawati