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KAJIAN PENGARUH ADMIXTURE PADA PAPAN SEMEN BERSERAT BERBUSA RINGAN Pratikto Pratikto; Anni Susilowati; Eko Wiyono
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 27, No 1 (2022): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v27i1.3671

Abstract

Foam mortar can be used as an alternative to cement board mixtures in ceiling or ceiling construction. The purpose of this study was to obtain the physical and mechanical properties of lightweight foamed cement board, to analyze the effect of admixture on bending strength, and to determine the optimum admixture for lightweight foamed cement board. The study used an experimental method by molding cement board test objects. The independent variable for the composition of the mixture with a ratio of 1 Cement: 1.2 Sand: 0.47 w/c ratio, with a mortar ratio of 0.45: 0.55; 31% glass fiber and 1:30 foam agent as well as 6 different admixture variations, namely 0; 0.2; 0.4; 0.6; 0.8 and 1.0%. The dependent variables are density, specific gravity, strength of nailed, and bending strength. The results showed that the higher the admixture content, thee workability. Density and specific gravity are decreasing. Meanwhile, the strength of the cement board is nailed, it does not break, there are no surface cracks, and the nails are easy to pull out. Bending strength was increasing and the optimum at 0.8% admixture variation was 60.44 kg/cm2. For the long term, the composition of this foam mortar mixture can be used as a ceiling
PEMANFAATAN SAMPAH DAUN SEBAGAI BAHAN CAMPURAN PAPAN PANEL SEMEN DENGAN BAHAN IKAT MU PLESTERAN Anni Susilowati
Jurnal Poli-Teknologi Vol. 11 No. 1 (2012)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.43 KB) | DOI: 10.32722/pt.v11i1.20

Abstract

This research was conducted on cement board panel using Glodogan leaves, that were already cut into pieces with a length of 5-20 mm and a width of 3-10 mm. Then, they were soaked in cold water for 24 hours than dried in room temperature for a day. Various compositions used for the mixture of instant cement volume MU-301 and leaf waste were 1: 0, 1: 0.2, 1: 0.4, 1: 0.6, 1: 0.8, and 1: 1.0 with a water mixture ratio of 0.15. The process of making the mixture was done by using a vibrating table of 30-60 seconds and then carried out hydraulic compression with a load of 3 kg/cm ². The result indicates that more leaf waste in cement board panel leads to an increased water seepage, water absorption, moisture content and thickness swelling. Moreover, increasing the addition of leaf waste can also reduce the density, specific gravity, flexural strength, compressive strength and tensile strength. The result also indicates that the lowest the highest flexural strength of 2.90 MPa does not meet the minimum requirement of 10 MPa (SNI 15-0233-1989), which was resulted from the mixture with the composition of leaf waste 0.2. This was the most possible mixture to be developed. Keywords: Leaves waste, cement board panel, flexural strength, water absorption, and water seepage. Abstrak. Penelitian dilakukan pada papan panel semen dengan menggunakan daun Glodogan dipotong-potong ukuran panjang 5 - 20 mm dan lebar 3 - 10 mm kemudian direndam dalam air dingin selama 24 jam dan dikeringkan. Komposisi campuran yang digunakan berdasarkan perbandingan volume campuran semen instan MU-301 : SD adalah 1 : 0; 1 : 0,2; 1 : 0,4; 1 : 0,6 ; 1 : 0,8; 1 : 1,0 dengan faktor air campuran (f.a.c.) 0,15. Proses pembuatan dilakukan dengan penggetaran menggunakan vibrating table selama 30 - 60 detik kemudian dilakukan pengempaan hidraulis dengan beban sebesar 3 kg/cm². Hasil analisis menunjukkan semakin banyak sampah daun pada papan panel semen mengakibatkan peningkatan rembesan air, daya serap air, kadar air dan pengembangan tebal. Selain meningkatkan penambahan sampah daun juga dapat menurunkan densitas, berat jenis, kuat lentur, kuat tekan dan kuat tarik. Hasil penelitian kuat lentur tertinggi sebesar 2,90 MPa tidak memenuhi persyaratan minimum 10 MPa (SNI 15-0233-1989), yang dihasilkan oleh campuran dengan komposisi variasi 0,2 SD. Campuran ini merupakan campuran yang paling memungkinkan untuk dikembanngkan. Kata kunci : Sampah daun, papan panel semen, kuat lentur, daya serap air, rembesan air
BETON MUTU TINGGI TANPA PROSES PEMADATAN MANUAL Pratikto _; Anni Susilowati
Jurnal Poli-Teknologi Vol. 11 No. 1 (2012)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (533.039 KB) | DOI: 10.32722/pt.v11i1.30

Abstract

The need of the advanced infrastructure facilities, such as long-span concrete bridges , high-rise concrete buildings should be considered as the new concrete development. Improving the quality of concrete can be done with a material change or replacement of some materials with steel slag. The recent time many industry take a part in using waste material from Cilegon steel. In Indonesia, high quality concrete compressive strength can be achieved a maximum strength about 60 MPa. Concrete properties will decrease as a result of the added material strength of cement, aggregates, and the presence of pores. Water cement ratio reduction (w/r) and the addition of admixture as silicafume often used to modify the composition of the concrete and reduce pores. W/r reductions result in reduced porosity and the pores of the concrete, but workability concrete also be difficult to do. In order to make concrete workable the used superplastisizer is the best solution to do. Small water cement ratio 0.2 and superplasticizer intramix kind High Range water reduction at a dose of 1.8% can produce high-performance concrete. In the cement composition 1217kg, 243kg of water, sand 446kg, 545kg steel slag, superplasticizer silicafume 24l 85kg and obtained high quality concrete with compressive strength of 588.53 kg/cm2 in slump flow with the weight of 2230kg/m3 64mm. Principles of compaction without using a vibrator to use a substance without reducing the quality of the concrete risers. Small factors of w/r requires careful stirring using a saturated aggregate surface is helpful meaning in manufacture high quality concrete. Keyword : High Strength concrete, superplasticizer, steel slag, water cement ratio, slumpflow.
PENGGUNAAN SEKAM PADI DENGAN ANYAMAN BAMBU SEBAGAI PAPAN SEMEN DEKORATIF Eko Wiyono; Anni Susilowati
Jurnal Poli-Teknologi Vol. 10 No. 1 (2011)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.152 KB) | DOI: 10.32722/pt.v10i1.406

Abstract

Abstrak Penelitian dilakukan pada papan semen sekam padi dengan variasi kadar semen 75%, 100%, 125%, 150%, 175% dan 200%. Analisis menunjukkan bahwa Papan semen sekam padi yang dilapisi dengan anyaman bambu nilai berat papan, kerapatan, kadar air, pengembangan tebal dan kuat lentur rata-rata lebih besar masing-masing sebesar 49,381%; 13,342%; 30,206%; 146,106% dan 74,642% dari papan semen tanpa anyaman bambu. Sedangkan nilai penyerapan air papan semen sekam padi yang dilapisi dengan anyaman bambu rata-rata lebih rendah 37,092%. Papan semen sekam padi tanpa anyaman bambu yang memiliki sifat fisik dan mekanik yang paling baik serta masih memenuhi standar SNI 03-6861.1.2002 adalah papan semen sekam padi dengan komposisi kadar semen diatas 125% PC. Sedangkan untuk papan semen sekam padi dengan anyaman bambu semuanya memenuhi standar, tetapi yang memiliki sifat fisik dan mekanik yang paling baik serta kuat lentur yang tinggi adalah papan semen sekam padi dengan komposisi kadar semen 1 limbah : 1,75 PC. Kata kunci : Sekam Padi, Anyaman bambu, Kuat lentur
VARIASI SERAT GELAS PADA PAPAN SEMEN DENGAN MORTAR BUSA: VARIASI SERAT GELAS PADA PAPAN SEMEN DENGAN MORTAR BUSA Rikki Sofyan Rizal; Pratikto; Anni Susilowati
Jurnal Ilmiah Teknologi Infomasi Terapan Vol. 8 No. 2 (2022)
Publisher : Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.8 KB) | DOI: 10.33197/jitter.vol8.iss2.2022.839

Abstract

Foam mortar is a composite material consisting of a mixture of foaming fluid, cement, sand and water. Foam mortar technology is currently being developed and can be an option for cement board mixtures that have a light weight. Foam mortar cement board is one such product. Glass fiber has a fairly high tensile strength. This makes glass fiber potential as a reinforcing material in the manufacture of cement boards. The fiberglass used is fiber with a size of 31 x 31 cm and a thickness of 0.2-0.6 mm. The purpose of this study was to obtain a cement board with a small or light density, obtain the characteristics of a cement board with foam mortar and the addition of glass fiber, and obtain the optimum content of glass fiber for maximum flexural strength and still meet the requirements of SNI 15-0233-1989. The mixture ratio is 1 PC : 1.2 PS : 0.5 foam with FAS 0.47 and variations in glass fiber content of 0%, 8%, 16%, 23%, and 31% fiber by weight of cement. The results of the analysis show that the more glass fiber used can reduce the density, increase the water content, water absorption, and increase the flexural strength up to 10 times. The highest flexural strength was found in the variation of 31% fiber and the lowest was 0% fiber with values ??of 14,931 kg/cm2 and 1,195 kg/cm2. The addition of glass fiber also increases the nailing ability of the foam cement mortar board and complies with the SNI 15-0233-1989 standard. Key words : Cement Board; Foam Mortar; Fiberglass.
PENGARUH BONDING AGENT DAN SERAT GELAS PADA PAPAN SEMEN RINGAN Irfan Oktariadi Oktariadi; Pratikto; Anni Susilowati
Jurnal Ilmiah Teknologi Infomasi Terapan Vol. 9 No. 1 (2022)
Publisher : Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/jitter.vol9.iss1.2022.918

Abstract

A ceiling is a building material that is inseparable from a building. The material for the ceiling must be flexible, light, durable, and easy to install. So that the weight of the cement board is light, foam is used as its constituent material. Due to the weak flexural strength of foam mortar, an alternative that can be taken is to add glass fiber and a bonding agent to the lightly foamed cement board mix. This study aims to obtain physical and mechanical properties as well as optimum levels of fiberglass and bonding agent to achieve maximum flexural strength. The board is made from a mixture of PC, sand, water, fiberglass, foam agent and bonding agent. The mixture ratio used is 1 Cement : 1,2 Sand : 0.15 phase, foam agent 1:30 and 5 different variations of glass fiber, namely 0, 3, 6, 9 and 13%. For density and specific gravity values, the tendency is decreasing, while for the ability to nail variations of 0 and 3% experiencing cracks and splits, the shape test is in accordance with the requirements of SNI. As for thickness expansion, moisture content, water absorption and flexural strength tend to increase. Based on the test results, the optimum level of use of glass fiber and bonding agent on lightweight cement boards is 6% fiber variation because it has the highest flexural strength value of 33.07 kg/cm².
PENGARUH GROUND GRANULATED BLAST FURNACE SLAG SEBAGAI PENGGANTI SEBAGIAN SEMEN PADA PAPAN SERAT RINGAN Ananda Chaerul Imam; Anni Susilowati; Pratikto
Jurnal Ilmiah Teknologi Infomasi Terapan Vol. 9 No. 1 (2022)
Publisher : Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/jitter.vol9.iss1.2022.923

Abstract

ABSTRACT Lightweight fiberboard is a composite material consisting of a Ground Granulated Blast Furnace Slagwaste mixture, foaming liquid, cement, sand, and water. It is necessary to optimize the use of environmentally friendly materials such as Ground Granulated Blast Furnace Slagwaste which has a specification of the main content, namely calcium, aluminum and silica which have a chemical composition not different from the minerals in portland cement. Materials for foam mortar are currently being developed and can be an option for fiberboard mixtures that have a light weight. Behind the advantages of foam cement board which has a light weight and the use of glass fiber on lightweight fiberboard can increase the flexural strength. The research was conducted to obtain the flexural strength of lightweight fiberboard based on SNI 001-0449-2006 and SNI 15-0233-1989 regarding Quality and Test Method of lightweight fiberboard. Variation used 1 PC : 0% GGBFS : 1,2 Sand : 13% Glass Fiber, 0,8 PC : 20% GGBFS : 1,2 Sand : 13% Glass Fiber, 0,6 PC : 40% GGBFS :1,2 Sand : 13% Glass Fiber, 0,4 PC : 60% GGBFS :1,2 ??Sand : 13% Glass Fiber, 0,2 PC : 80% GGBFS :1,2 ??Sand : 13% Glass Fiber with FAS 0,15. The results of the analysis show that the more waste is used, the lower the density value, the specific gravity value, and the water absorption value. Increase the value of thickness expansion, moisture content value, nailing ability, and has an optimum value of flexural strength at a variation of 20% ground granulated blast furnace slag waste by 90 kg/cm² According to the requirements of SNI 15-449-2006 that all lightweight fiberboard test specimens for flexural strength testing are included in PSKT (High Density Fiberboard). Keywords: Foam mortar; GGBFS; Glass fiber; Lightweight fiberboard.
MODIFIKASI CAMPURAN BETON ASPAL HRS-WC DENGAN MENGGUNAKAN BAHAN ANTI STRIPPING Rikki Sofyan Rizal; Anni Susilowati; Eko Wiyono
Jurnal Ilmiah Teknologi Infomasi Terapan Vol. 9 No. 1 (2022)
Publisher : Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/jitter.vol9.iss1.2022.937

Abstract

In road development, the main challenge is the pavement, especially asphalt concrete which breaks down quickly. The type of damage that is commonly found in Indonesia is premature surface damage, the visible symptoms of which are surface peeling, surface rutting, grain release and cracks. This typical damage for asphalt concrete pavement layers, is usually caused by low asphalt adhesion, this is marked by the release of grains due to no longer cohesion by asphalt which eventually gives water the opportunity to penetrate and destroy the asphalt concrete matrix. As a result, the mixture becomes loose and there is a lot of asphalt peeling on the surface layer. Based on this background, it is necessary to study the modification of the gap graded asphalt concrete mixture for Lataston HRS-WC by using anti-stripping materials. The purpose of conducting this research is to obtain the effect of anti-stripping materials in the gap graded asphalt concrete mixture on the properties of the Marshall test results in accordance with the 2018 Highways specifications. From the results of the tests carried out, the Optimum Asphalt Content (KAO) is 7.4%. With the KAO value, a test sample was made with the addition of Wetfix Be with a concentration of 0.2; 0.3 ; 0.4 and 0.5. The results obtained with the addition of Wetfix Be 0.30% increased the stability value to 1423.12 kg and Mashall quotient to 400.88 kg/mm. A high Marshall Quotent value indicates the mixture is stiff and has low flexibility.
PENGGUNAAN REDISET LQ-1106 PADA CAMPURAN ASPAL HRS-WC Rikki Sofyan Rizal; Pratikto; Anni Susilowati; Rudolf Triamba Prasetyo; Imron Tsaluji
Jurnal Ilmiah Teknologi Infomasi Terapan (JITTER) Vol. 9 No. 3 (2023)
Publisher : Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/jitter.vol9.iss3.2023.1300

Abstract

Hot Rolled Sheet-Wearing Course merupakan campuran beraspal panas dengan penggunaan agregat bergradasi senjang. Karakteristik terpenting dari campuran ini adalah durabilitas dan fleksibilitas, namun lapisan ini juga dituntut memiliki stabilitas yang cukup dalam menerima beban lalu lintas yang bekerja secara langsung pada lapisannya. Oleh sebab itu, dibutuhkan sebuah inovasi yang dapat meningkatkan sifat stabilitas campuran aspal tersebut. Pada penelitian ini penulis menggunakan zat aditif Rediset LQ-1106 sebagai solusi dalam meningkatkan nilai stabilitas campuran aspal tersebut. Tujuan dari penelitian ini adalah untuk menentukan karakteristik campuran aspal HRS-WC dengan penambahan Rediset LQ-1106 serta menentukan persentase optimum Rediset LQ-1106 yang digunakan. Metode penelitian ini terdiri dari empat tahapan, yang pertama melakukan pengujian sifat material. Kedua menentukan kadar aspal optimum pada campuran aspal HRS-WC. Ketiga, melakukan pengujian Marshall, dengan variasi kadar aditif Rediset LQ-1106 0%; 1%; 2% ;3% dan 4% terhadap kadar aspal optimum. Keempat melakukan pembahasan dan kesimpulan terhadap hasil penelitian yang telah dilakukan. Hasil penelitian menunjukkan bahwa campuran aspal HRS-WC memiliki nilai optimum pada kadar aspal 7,4% dan Rediset LQ-1106 1,65%. Hasil tersebut juga menunjukan karakteristik yang memenuhi persyratan spesifikasi Binamarga 2018 dengan nilai VMA sebesar 18,75%, VIM 5,40%, VFB 72%, stabilitas 1410 kg, flow 3,95 mm dan nilai MQ sebesar 350 kg/mm.
PENGUNCI DINDING BATA RINGAN DENGAN BAJA TULANGAN POLOS Muhammad Andika Ghifary; Pratikto; Anni Susilowati
Jurnal Ilmiah Teknologi Infomasi Terapan (JITTER) Vol. 10 No. 1 (2023)
Publisher : Universitas Widyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33197/jitter.vol10.iss1.2023.1410

Abstract

Sebagian besar daerah Indonesia ialah wilayah rawan gempa. Oleh Sebab itu, diperlukan adanya inovasi atau pengembangan pada material bangunan untuk mengurangi keruntuhan yang akan terjadi akibat gempa. Salah satunya yaitu pengembangan material dalam pembuatan dinding bangunan. Dari inovasi-inovasi dan perkembangan material dalam pembuatan dinding tersebut, terciptalah penelitian tentang perkembangan material dengan cara menambah perkuatan pada dinding. Salah satunya adalah penelitian tentang bata interlock. Dilakukanlah penelitian mengenai penggunaan baja tulangan sebagai pin atau pengait pada dinding interlock. Tujuan dari penelitian ini yaitu untuk menentukan ukuran pin yang optimum pada bata ringan dan menganalisis pengaruh kuat geser pada dinding bata ringan interlock sesuai dengan ketentuan SNI 8640:2018. Penggunaan baja tulangan sebagai pin untuk dinding bata ringan interlock ini menggunakan 5 variasi; yaitu tidak memakai tulangan, memakai tulangan Ø8 mm dengan kedalaman penetrasi 4 cm, memakai tulangan Ø10 mm dengan kedalaman penetrasi 4 cm, memakai tulangan Ø8 mm dengan kedalaman penetrasi 3 cm, dan memakai tulangan Ø10 mm dengan kedalaman penetrasi 3 cm. Untuk nilai kuat geser pada penggunaan baja tulangan di bata ringan cenderung mengalami kenaikan dari bata ringan yang tidak menggunakan baja tulangan. Diperoleh penggunaan baja tulangan yang optimum pada penggunaan tulangan dengan variasi ukuran Ø10 mm dan kedalaman penetrasi tulangan pada bata ringan sedalam 3 cm karena memiliki nilai kuat geser paling tinggi yaitu sebesar 1,26 Mpa.