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All Journal Civil Engineering Forum Teknik Sipil Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Sipil Jurnal Teknik Sipil dan Perencanaan Jurnal Tata Kota dan Daerah Journal of Engineering and Technological Sciences Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Semesta Teknika Teknisia Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Rang Teknik Journal Journal of the Civil Engineering Forum
Iman Satyarno
Universitas Gadjah Mada
Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Social Sciences Transportation

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BATAKO SEKAM PADI KOMPOSIT MORTAR SEMEN Sumaryanto, Dedy; Satyarno, Iman; Tjokrodimulyo, Kardiyono
Civil Engineering Forum Teknik Sipil Vol 19, No 1 (2009): JANUARI 2009
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

Several previous construction material researches on exploiting rice husk as wall panel (concrete block), showed that rice husk mixed with construction material gave lighter weight but lower strength. This research attempted to improve the strength of the concrete block composite by giving cement mortar mixture as the outer layer. The specimen of concrete block composite was made under the concrete principal method. The first step was to put the concrete block composite and rice husk into a mold in various thickness of required outer layer. Then cement mortar mixture was poured around it as the outer layer. The results showed that the compressive strength of concrete block for various outer layer thickness without cord net ranging from 5 mm, 10 mm, and 15 mm were reached at 1,68 MPa, 5,16 MPa and 6,51 MPa, respectively and per m² wall weight of 102,44 kgs, 122,46 kgs, and 139,10 kgs, respectively. The compressive strength of concrete block with cord net for the same outer layer thickness variation were reached at 1,97 MPa, 5,72 MPa and 6,70 MPa, respectively and per m² wall weight of 120,40 kgs, 135,98 kgs, and 152,23 kgs. Water absorption of outer layer achieved were 2,01% and 7,06% after 10 minutes and 24 hours soaking, respectively. The optimum outer layer thickness without cord net of concrete block composite with rice husk was 10 mm, which met the requirements of minimum compressive strength, light weighted and economic cost aspects.
PENGGUNAAN PASIR BESI DARI KULON PROGO DENGAN BERAT JENIS 4,311 UNTUK MORTAR PERISAI RADIASI SINAR GAMMA Putra, Hendra; Satyarno, Iman; Wijatna, Agus Budhie
Civil Engineering Forum Teknik Sipil Vol 18, No 3 (2008): SEPTEMBER 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

The radiation effects of radiology and x-rays equipments do not only give excellent benefit for human, but also harmful effect at the same time. Protecting people form the radiation is an important aspect to control such harmful effect. Hence every nuclear installation and radiology unit must pay attention on protecting surrounding people from the radiation. Lead is commonly used as component of shield, but the use of lead requires special work and energy. In economical aspects, the cost of such effort is relatively expensive, but in workability aspects, the application of iron sand mortar can be used as alternative material to protect from radiation. This study assessed gamma radiation absorption on mortar cube sample with dimension of 15 x 15 cm and thickness variation of 1 cm to 15 cm. Mortar ingredient consisted of iron sand, cements and water, with cements - iron sand volume ratio of 1 : 6. Water cement ratio was determined at 0,4 and the gamma radiant energy applied were Iodine-131 (131I) denergi 284,00 keVs, 364,00 keVs, 637,00 keVs and Caesium-137 (137Cs) dissociation energy of diatomic 662,00 keV. Physical test gradation conducted to iron sand from Congot beach Kulonprogo regency of Daerah Istimewa Yogyakarta Province, showed specific gravity of 4,331 with, Ssd specific gravity of 4,330, unit weight of 2,554 gr/cm³, water absorbency 0,442%, and grain finest modulus of 1,33, which was categorized as zone IV (smooth gradation). Compressive strength and specific gravity of Iron sand mortar at 28 days reached 7,92 MPa and 2,59 respectively. Especially, specific gravity was heavier than ordinary cements mortar with average value ranged from 1,80 - 2,20. Coefficient linear magnitude attenuation (μ) of iron sand mortar at radiation energy 284 keVs, 364 keVs, 637 keVs and 662 keVs were 0,2816 cm-1, 0,2253 cm-1, 0,1297 cm-1 and 0,1003 cm-1 respectively. Based on these relation, the line equation obtained was y = 0,5631e(-0025X).
PEMANFAATAN TRAS DARI SAMIGALUH KULON PROGO SEBAGAI BAHAN POZOLAN UNTUK CAMPURAN MORTAR Hariyanto, Ari Dwi; Satyarno, Iman; Widiasmoro, Widiasmoro
Civil Engineering Forum Teknik Sipil Vol 19, No 1 (2009): JANUARI 2009
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

Cement is one of mortar components with significant influence to mortar quality and production cost. It is necessary to use alternative material as cement substitution material to reduce production cost without reducing the mortar quality. One of materials used as cement substitution is pozzolan. One type of pozzolan is Trass which is available in Kulon Progo Regency but has not been utilized optimally. The objective of this research is to obtain the mix ratio of lime-trass used as cement substitution in mortar production. This research used sand from Boyong, lime from Gunung Kidul, and trass from Samigaluh Kulon Progo. The chemical composition consised of active silica and trass petrography was used as secondary data. The primary data was the experiment result carried out in Construction Material Laboratory of Gadjah Mada University. The first step of experiment was to identify the mortar material characteristics. Then a paste mix in 4 ratios variation of mix lime-trasss (1:4, 2:3, 3:2, and 4:1) was made. Lime – trass mix ratio that produced the highest compression strength mortar (through compression test after 7 days) was used as cement substitution. Mortar mix ratio of cement (and cement substitution) and sand was 1 : 4. The Variations of cement : lime-trass were 1:0,1:4, 2:3, 3:2, 4:1, and 0:1. Result of the research showed that paste mix ratio of lime and trass of 2: 3 had the highest compression strength, which was used in the mortar mixes design. Results of mortar compression strength testing showed that the lower the compression strength, the larger the amount of the cement substitution. The mix of lime and trass taken from Pagerharjo can be used as cement substitution material for producing mortar type S to type O or concrete brick quality I to quality IV. Mix of lime and trass taken from Purwoharjo can be used as cement substitution material for producing mortar type N to type O or concrete brick quality I to quality III. Mortar tensile strength testing showed that the lower the tensile strength, the larger the cement substitution amount was. On the other hand, the larger the mortar permeability, the larger cement substitution amount was. Cement substitution can reduce the cement amount in mortar production but increase mortar production cost because trass production cost was more expensive than cement price.
PERANCANGAN LABORATORIUM CAMPURAN HRS-WC DENGAN PENGGUNAAN BUTON GRANULAR ASPHALT (BGA) SEBAGAI BAHAN ADDITIVE Howardy, Howardy; Suparma, Latif Budi; Satyarno, Iman
Civil Engineering Forum Teknik Sipil Vol 18, No 3 (2008): SEPTEMBER 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

Increasing demand for asphalt in the country results in 650,000 tons of imported asphalt per year. The early damage of asphalt pavement is due to increasing axle loads and high temperature climates. On the other side, natural asphalt in Buton island of Sulawesi Tenggara, which is the biggest natural asphalt deposit district in world containing about 677 million tons of asphalt, has not been optimally exploited. This research designs HRS-WC mixture by utilizing Buton Granular Asphalt ( BGA), one of Buton asphalt form, as additive in the binder. The objective of this research is to identify mixture characteristics by referring to Marshall characteristic. Mixture is designed under the Marshall Standard procedure and 24 hours Marshall Immersion at optimum binder content according to Indonesian specification (Bina Marga, 2005) for Hot Rolled Sheet-Wearing Course ( HRS-WC). Mixture design applies the additive BGA (Buton Granular Asphalt) variations of 0%, 2%, 4%, 6%, 8% and 10% to the total mixture. The results of the research showed the optimum asphalt content of specimen Buton Granular Asphalt (BGA) variations of 0%, 2%, 4%, 6%, 8%, and 10% were 8.3%, 7.7%, 7.2%, 6.7%, 6.4%, and 6.3%, respectively. The misture reached the Stability values at 1373.8 kgs, 1554.9 kgs, 1493.1 kgs, 1419.3 kgs, 1230.0 kgs, and 1429.3 kgs, respectively. Index of retained strength obtained were 98.1%, 75.4%, 87.9%, 93.0%, 98.6%, and 80.5%, respectively. Composition suitable for addition Buton Granular Asphalt (BGA) at HRS-WC mixture were 2% and 4% BGA, with the mixture density values of 2.266 gr/cm3 and 2.218 gr/cm3, mixture VMA values of 19.9% and 18.9%, mixture VFWA values of 74.7% and 71.4%, mixture VITM values of 5.0% and 5.4%, mixture Stability values of 1554,9 kgs and 1493,1 kgs, mixture flow value of both of 3,0 mm, mixture MQ values of524.1 kg/mm and 493.1 kg/mm, mixture Index of retained strength of 75.4% and 87.9%.
PENGGUNAAN GULA PASIR LOKAL SEBAGAI PLASTICIZER PADA ADUKAN MORTAR UNTUK PEMBUATAN CONBLOCK Rifany K., Dian; Satyarno, Iman; Tjokrodimuljo, Kardiyono
Civil Engineering Forum Teknik Sipil Vol 18, No 3 (2008): SEPTEMBER 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

Cement mortar (cement, sand and water mixture) has been widely applied as building materials, such as cement plaster, conblock, concrete brick, roof tile, etc. To obtain good quality conblock, one of the efforts is by adding cane sugar the plasticizer into a mortar mixture. Although cane sugar addition can reduce the use of cement and water, but the mortar workability degree can still be maintained. Reduction of the cement used also reduces the cost needed to make the cement mortar, which produces a more economical conblock. The objective of this research is to identify the cement ratio, specific gravity, compressive strength, water absorption, and endurance of the conblock through the abrasion test. This research was carried out in the Construction Material Laboratory of Civil and Environmental Engineering Department of Gadjah Mada University. Conblocks used as samples were ones produced by Diamond Baru Conblock Baru Yogyakarta. The materials for producing material consisted of Portland cement Type I produced by Gresik cement factory, and sand from Krasak River in Yogyakarta. The local cane sugar used was produced by Madukismo Sugar Factory in Yogyakarta. The mixture samples were made using cement-sand at various ratios of 1:2, 1:4 and 1:6. For each ratio, two types of samples were made and one of them was added with cane sugar at 2% of the cement weight. Twenty samples of conblock specimens were made for each variation, both for with and without cane sugar addition. The conblock dimension was 200 x 100 x 80 mm. The specimens were given fresh and hardened conblock test and measurement after 28 days after they were made. The research results indicated that cane sugar addition gave insignificant effect to the reduction of cement and water in the mixture because plasticizer material reached cement decrement less than 3%. The compressive strength decreased to 2.5%, 10% and 9% than the normal conblock at the volume ratios of 1:2, 1:4 and 1:6, respectively. Results of compressive strength test showed that samples met the conblock quality standards as referred by SII 0819-83 class I and II. Material cost of conblock m3 with cane sugar addition was 3% cheaper than normal conblock.
BETON NON PASIR DENGAN AGREGAT DARI BATU ALAM (BATU APE) SUNGAI LUA KABUPATEN KEPULAUAN TALAUD SULAWESI UTARA Trisnoyuwono, Diarto; Tjokrodimuljo, Kardiyono; Satyarno, Iman
Civil Engineering Forum Teknik Sipil Vol 19, No 1 (2009): JANUARI 2009
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

Timber supply is diminishing in addition to the trend to lower quality but higher cost of wood production manufacturing. However, because the demand of this material continues, an alternative or substitution on the use of timber, such as bamboo laminated, is desirable. Having susceptible character to powder by beetles attack, bamboo must be passed through preservation process before it is applied as laminating materials, but chemical preservative materials used in industrial process ring negative impacts to the environment. One of human and environmental friendly preservatives is the tobacco extract. Nevertheless, the most effective concentration of tobacco extract and its influence to the adhesive materials have not been well recognized. This research objective was to investigate the influence of tobacco extract to the natural and mechanic behaviour of laminated bamboo. Dried tobacco flake was mixed with water in variable concentration of 100, 125, 150 and 175 gram/liter. Bamboo split were given treatment in boiling water with tobacco extract solutions. As benchmarking, bamboo split also preserved with boiling water (without preservatives materials) and 5% concentration of borax. Non preservative bamboo was used as the control. The result of experiment showed that 150 gram/liter tobacco extract concentration of caused 61,33% insect mortality and 1,87% decreased weigh, which is effective to be used as preservative in compare to other three concentrations. Water content and density observation showed that preservation using 150 gram/liter extract tobacco comparing to non preservative boiling preservation, produced smaller value of water content and larger value of density than borax preservative. Preservation using 150 gram/liter tobacco extract produced highest value of compression parallel to grain and modulus of the bamboo elasticity Petung mechanic properties were 277,95 MPa and 170,34 MPa, respectively. Mechanical properties of laminated bamboo that were significantly influenced by preservative variation showed that highest values for compression parallel to grain and modulus of elasticity were 66,09 MPa and 127,12 MPa, respectively and reached by preservation using 100 gram/liter of tobacco extract.
Evaluasi Kuat Tumpu Alat Sambung Baut pada Papan WPC dari Limbah Sengon dan Plastik HDPE Arnandha, Yudhi; Satyarno, Iman; Awaludin, Ali; Fardhani, Arfiati
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 22, Nomor 2, DESEMBER 2016
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.406 KB) | DOI: 10.14710/mkts.v22i2.12882

Abstract

Wood Plastic Composite (WPC) is wood based material that been produce by mixing sawdust as main composition and plastic polymer as bonding agent. Nowadays, WPC board already been produced in Indonesia using Sengon sawdust and recycle HDPE plastic. Sengon sawdust was used as WPC since its availability from plywood production waste, moreover HDPE plastic considered had higher strength and more rigid than PET plastic. WPC occasionally being used as non structural material, moreover from previous study about mechanical properties of WPC, it was found that WPC Sengon has high shear strength around 25 – 30 MPa. These lead that WPC Sengon had a potential used as shear wall sheathing, thus additional research need to be conducted in order to study the type of bolt and diameter of the bolt can be used for these shear wall. This study aimed to investigate the dowel bearing of bolt using full hole method based on ASTM D5764 with type and bolt diameter as specimen variation. Two types of bolt were used in this study; stainless bolt and standard bolt with diameter each of 6 mm, 8 mm, 10 mm and 12 mm. According to ANOVA, there was insignificant result between stainless bolt and standard one, but there was significant result based on diameter of the bolt. Hereafter, it can be recommended the used of 10 mm diameter of bolt for structural purpose with dowel bearing strength around 67 – 70 MPa.
STUDI EKSPERIMENTAL KERUNTUHAN RANGKA KUDA-KUDA BAJA RINGAN PADA ATAP RUMAH DAN SEKOLAH Utomo, Adityo Budi; Satyarno, Iman; Muslikh, Muslikh
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 25, No 2 (2020): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v25i2.2159

Abstract

Increasingly expensive price of quality woods and difficulties of workmanship, it makes people switch from wood to lightweight steel as a roof truss. The use of lightweight steel as truss becomes popular because of the fast workmanship dan durability of the material. Many cases show that lightweight steel truss at school and house collapsed and caused a fatality. This lightweight steel truss study was carried out on a full scale with a span of 6 m and a slope of 300, while the loading test pattern at the placement points of battens was like truss in the community. The goals of this study to measure and observe several parameters including weight, maximum capacity, stiffness, ductility, price, length of work, and failure pattern. From testing, the result shows that lightweight steel truss has dead weight, maximum capacity, stiffness value, ductility value, price, working time, and failure pattern respectively of 21,3 kg,734 kg, 91,18 kg/mm, 2,97, Rp 1.740.000, 2 days, and failure pattern is buckling on the diagonal top chord. The result of this research indicates that lightweight steel truss can be used in the community with the limitation of using metal roof coverings instead of concrete or ceramic and the distance between the truss max 1,2 m.
PENGARUH SERAT BAJA (DRAMIX) TERHADAP KUAT LENTUR PADA ROLLER COMPACTED CONCRETE (RCC) Adita Dwi Sampurno; Iman Satyarno; Agus Taufik Mulyono
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 15, No 1 (2019): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (790.148 KB) | DOI: 10.21831/inersia.v15i1.24862

Abstract

ABSTRACTRigid pavement for highways in Indonesia started as an alternative for road pavement. Roller compacted concrete (RCC) is one type of dry concrete mixture with low water cement ratio (slump 5 cm). The RCC spreading is the same as the asphalt concrete pavement that uses the finisher and is compacted using a roller. This research uses RCC mix design with cement water factor value 0,25. Additional silicafume materials of 10%, superplasticizer 2.4%, and steel fiber (dramix) with variations of 0.5% and 1%. RCC Compaction using standard proctor tools. Testing of bending forces and compression of concrete in 1 day and 28 days. The result of research of RCC variation of 0.5% steel fiber and 1 day old concrete obtained Flexural Strength of 4,2 MPa while 28 days concrete gained Flexural Strength of 5,7 MPa. The variation of 1% steel fiber 1 day concrete obtained 3.4 MPa Flexural Strength, while the 28 days  concrete obtained 6.1 MPa Flexural Strength.Keywords: Roller Compacted Concrete (RCC), Steel Fiber (dramix), Flexural Strength ABSTRAKPerkerasan kaku di Indonesia semakin banyak digunakan sebagai alternatif perkerasan jalan raya. Roller Compacted Concrete (RCC) atau beton padat giling (BPG) merupakan salah satu jenis campuran beton kering dengan faktor air semen (FAS) yang rendah (slump 5 cm). Penghamparan RCC sama seperti penghamparan perkerasan beton aspal yang menggunakan finisher dan dipadatkan menggunakan roller. Kajian ini menggunakan mix design RCC dengan nilai faktor air semen 0,25. Bahan tambah silicafume sebesar 10%, superplasticizer 2,4%, dan serat baja (dramix) dengan variasi 0,5% dan 1%. Pemadatan RCC menggunakan alat standar proctor. Pengujian kuat lentur pada beton umur 1 hari dan 28 hari. Hasil kajian RCC variasi serat baja 0,5% beton umur 1 hari diperoleh kuat lentur 4,2 MPa, sedangkan beton umur 28 hari diperoleh kuat lentur 5,7 MPa. Variasi serat baja 1% beton umur 1 hari diperoleh kuat lentur 3,4 MPa, sedangkan beton umur 28 hari diperoleh kuat lentur 6,1 MPa. Kata kunci: Roller Compacted Concrete (RCC), Beton Padat Giling (BPG), Serat baja (dramix), Kuat lentur 
Perkuatan Lentur Pelat Lantai Tampang Persegi dengan Penambahan Tulangan Tarik dan Komposit Mortar Juandra Hartono; Iman Satyarno; Andreas Triwiyono
Semesta Teknika Vol 13, No 1 (2010): MEI 2010
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/st.v13i1.720

Abstract

Overloading of structures can cause failure. In order to continue using them, strengthening is required. In this research elastic strengthening was carried out on concrete floor plates by means of tensile reinforcement addition, and mortar composite additionto apply epoxy resin. Four reinforced concrete slabs, consisted of one control slab (PK), one monolith slab (PM), one strengthened slab (PPE) and one unstrengthened slab (PPTE). Specimen dimensions were 700 mm x 1500 mm x 60 mm for the PK, and 700 mm x 1500 mm x 100 mm for the others. Specimens were placed on a simply supported loading frame, and statically loaded at their mid-span. Numerical analysis using Response-2000 software package was carried out for comparison with the experiment al result. It was found out that the flexural capacity of the PK, PPE, PPTE and PM specimens are 5,99 kNm, 12,52 kNm, 13,87 kNm and 21,38 kNm, respectively. In comparison with that of thePK, flexural capacity of the PPE and PPTE specimens was found to increase by 109,019 % and 131,55 %, respectively. The increase of stiffness was 324,77 % and 430,21 % for the PPE and PPTE specimens, respectively. The ductility factor of the PPE and PPTE increase 29,63 % and 19,03 %, respectively . The PK and PM specimen s experienced flexural failure, while the PPE and PPTE specimens experienced debondingfailure.
Co-Authors Adita Dwi Sampurno Agus Budhie Wijatna Agus Taufik Mulyono Ahmad Rifa'i Ahmad Wancik Ali Awaludin Ananto Nugroho, Ananto Andreas Triwiyono Anisa Arfiati FArdhani, Arfiati Ari Dwi Hariyanto Arief Gunarto Ashar Saputra Danang Purwanto Dedy Sumaryanto Dian Rifany K. Diarto Trisnoyuwono Djoko Sulistyo Gatot Subagio Gerson Pongajow Haryadi Widodo Hendra Putra Howardy Howardy Hsuan-Teh Hu INTAN SUPRABA Juandra Hartono Juandra Hartono, Juandra Kardiyono T. Kardiyono T. Kardiyono Tjokrodimuljo Kardiyono Tjokrodimulyo Kukuh Adhi Kafie Latif Budi Suparma Lilis Tiyani Muslikh Muslikh Niza Widiana R. Abadirulian Ervantara Radianta Triatmadja Subyakto Subyakto Suprapto Siswosukarto Suratmin Utomo, Adityo Budi Vernandest, Effri Widiasmoro Widiasmoro Yanuar Haryanto Yudhi Ardiansyah Yudhi Arnandha