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All Journal REKA RACANA Rekayasa Mesin Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil BANGUN REKAPRIMA Jurnal Otomasi Kontrol dan Instrumentasi JITTER (Jurnal Ilmiah Teknologi Informasi Terapan) Prokons: Jurnal Teknik Sipil Construction and Material Journal International Journal of Mechanical Engineering Technologies and Applications (MECHTA) COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat JURNAL POLI-TEKNOLOGI
Pratikto Pratikto
Jurusan Teknik Sipil Politeknik Negeri Jakarta
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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PEMANFAATAN LIMBAH GENTENG BETON PADA PAVING BLOCK Pratikto, Pratikto; A, Ginanjar
Construction and Material Journal Vol 1, No 1 (2019): Construction and Material Journal Vol. 1 No. 1 Maret 2019
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Paving block merupakan bahan bangunan yang digunakan sebagai pekerasan permukaan jalan, baik jalan untuk keperluan parkir kendaraan ataupun jalan raya, ataupun untuk keperluan dekoratif pada pembuatan taman. Bahan penyusun paving block adalah semen, pasir dan air dengan atau tanpa bahan tambah lainnya. Bahan tambah yang digunakan dapat berupa limbah atau sisa bahan bangunan yang tidak terpakai. Penggunaan limbah bertujuan untuk mendapatkan mutu paving block sesuai standard dan memanfaatkan limbah secara optimal. Limbah genteng beton banyak ditemukan di sekitar bangunan bertingkat yang sudah lama dan khususnya kampus Politeknik Negeri Jakarta.Limbah ini dapat digunakan sebagai bahan pembentuk paving block sebagai substitusi agregat kasar. Dalam penelitian ini digunakan perbandingan semen dan pasir adalah 1 : 3 dengan presentase limbah genteng beton sebesar 0%, 10%, 20%, 30%, dan 40%. Nilai fas yang digunakan adalah 0,35. Hasil pengujian nilai kuat tekan yang ditinjau pada hari ke 7 pada presentase 0% sebesar 52,59 Mpa, presentase 10% sebesar 44,949 Mpa, presentase 20% sebesar 40,942 Mpa, presentase 30% sebesar 40,685 Mpa dikategorikan mutu A, sedangkan presentase 40% sebesar 26 MPa dikategorikan mutu B.Kata kunci: paving block, Limbah genteng beton, agregat kasar Paving block is a material that is used as a road surface hardening, either for vehicle parking , highways, or for decorative purposes in gardening. The constituent material of paving blocks are cement, sand and water with or without other added material. The added material used can be in the form of waste or residual unused building materials. The use of waste building material of concrete tile aims to get the quality of paving blocks according to standards and utilize waste optimally. Waste concrete roof tiles can be found around many high-rise building constructions and especially Jakarta State Polytechnic campus.This waste can be used as a paving block as a rough aggregate substitute. In this study the ratio of cement and sand was 1: 3 with a percentage of concrete tile waste of 0%, 10%, 20%, 30%, and 40%. The fas value used is 0.35. The testing results of compressive strength which is reviewed on day 7 at a percentage of 0% of 52.59 MPa, 10% of 44.949 MPa, 20% of 40.942 MPa, 30% of 40.658 MPa are categorized as grade A, while at a percentage of 40% the compressive strength is 26 MPa which is categorized as grade B.Keywords: paving block , waste concrete tile, coarse aggregate
KUAT TEKAN SELF COMPACTING CONCRETE MENGGUNAKAN GROUND GRANULATED BLAST FURNACE SLAG Anni Susilowati; pratikto pratikto; Dennis Yudha Praditya; Kusno Wijayanto
Prokons: Jurnal Teknik Sipil Vol. 13 No. 2 August 2019
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v13i2.195

Abstract

Self Compacting Concrete (SCC) as one type of concrete that is mostly used in building construction has good workability and can be obtained by adding filler instead of cement. Ground Granulated Blast Furnace Slag (GGBFS) has a chemical composition similar to the content in cement. Therefore, the study of the use of GGBFS was used as a partial substitute for cement in the SCC to examine the influences and quality of GGBFS on fresh concrete and to obtain SCC with the best compressive strength. This research method uses an experimental method by making SCC concrete specimens with an initial fas of 0.4 according to ACI 211.4R-93. The specimens were worked using GGBFS levels of 0%, until 80%, and using 1,4% superplasticizer, and 2% accelerator by weight of cement. The use of GGBFS at SCC can increase the value of compressive strength of about 4,27%-25,64 compared to SCC without using GGBFS. The resulted are known that GGBFS can influence compression strength. Based on the testing of fresh and hard concrete, it concluded that the best quality of SCC used 20% of GGBFS.
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
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.
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.
Pemanfaatan Fly Ash Sebagai Substitusi Sebagian Semen pada Papan Serat Ringan Susilowati, Anni; Satria, Kevin Muhammad; Pratikto, Pratikto
RekaRacana: Jurnal Teknik Sipil Vol 10, No 2: Juli 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaracana.v10i2.82

Abstract

ABSTRAKPapan serat ringan merupakan papan yang berasal dari pengolahan mortar yang terdiri dari campuran semen, pasir, air, foam, dan fly ash. Fly ash memiliki kandungan silica dan alumina yang mencapai 80%, dimana kandungan tersebut merupakan kandungan yang terdapat juga pada semen, sehingga fly ash dapat menjadi material alternatif sebagai pengganti semen. Penelitian dilakukan dengan menggunakan acuan pengujian sifat fisik dan mekanik berdasarkan SNI 15-0233-1989 dan SNI 01-4449-2006. Variasi yang digunakan adalah 0,6 – 1 PC: 0,1 – 0,4 fly ash: 1,2 Pasir: FAS 0,233 dengan ditambahkan serat gelas sebanyak 4 lapis serta ditambahkan foam agent guna menciptakan mortar busa dengan perbandingan mortar dan foam agent adalah 0,45: 0,55. Hasil analisis menunjukan penggunaan fly ash menurunkan nilai kerapatan dan berat jenis papan serat ringan. Didapatkan papan serat ringan yang memiliki kemampuan dipaku yang baik serta nilai kuat lentur optimum didapatkan pada variasi 10% fly ash dengan nilai sebesar 67,19 kg/cm².Kata kunci: fly ash, mortar busa, papan serat ringan, serat gelas ABSTRACKLightweight fiberboard is a board derived from mortar processing, consisting of a mixture of cement, sand, water, foam, and fly ash. Fly ash contains a silica and alumina content of up to 80%, which is also present in cement, making fly ash a potential alternative material to replace cement. The research uses reference tests for physical and mechanical properties based on SNI 15-0233-1989 and SNI 01-4449-2006. The variations used are 0.6 – 1 PC: 0.1 – 0.4 fly ash: 1.2 Sand: FAS 0.233, with the addition of 4 layers of glass fibers and foam agent to create foam mortar with a mortar to foam agent ratio of 0.45: 0.55. The analysis results show that the use of fly ash decreases the density value and specific gravity of the light fiberboard. A lightweight fiberboard with good nail-holding capability is obtained, and the optimum flexural strength value is achieved at the 10% fly ash variation with a value of 67.19 kg/cm².Keywords: fly ash, foam mortar, lightweight fiberboard, fiberglass 
PEMANFAATAN LIMBAH PLASTIK SEBAGAI BAHAN TAMBAH PADA BETON ASPAL CAMPURAN PANAS Susilowati, Anni; Wiyono, Eko; Pratikto, Pratikto
Bangun Rekaprima Vol. 7 No. 2 (2021): Oktober 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (499.592 KB) | DOI: 10.32497/bangunrekaprima.v7i2.2993

Abstract

Daur ulang plastik dapat digunakan sebagai campuran beton aspal dan sudah dikembangkan di beberapa daerah, memiliki beberapa kelebihan, yaitu tingkat perkerasan yang lebih baik, tidak mudah meninggalkan jejak roda kendaraan saat aspal basah, dan daya tahannya juga semakin meningkat. Tujuan penelitian untuk menentukan nilai propertis Marshall dan menentukan limbah plastik yang optimum pada beton aspal campuran panas yang memenuhi spesifikasi Bina Marga 2018. Metode penelitian yang digunakan dengan metode eksperimen di laboratorium. Benda uji dibuat mengacu pada SNI 06-2489-1991. Sebagai variabel bebas Kadar Aspal Optimum dengan variasi limbah plastik 0, 5, 10, 15, 20, 25 % dari berat aspal. Adapun Variabel terikat meliputi persen rongga dalam agregat, persen rongga dalam campuran, persen rongga terisi aspal, stabilitas, kelelehan, dan hasil bagi Marshall quotient. Hasil penelitian menunjukkan bahwa penambahan limbah plastik dapat menaikan nilai VFB, Stabilitas, kelelehan dan MQ serta menurunkan nilai VMA dan VIM. Kadar Limbah Plastik Optimum untuk campuran beton aspal bergradasi menrus sebesar 7,5%, dengan nilai VMA 16,44%; VFB 81,49%; VIM 3,07%; Satabilitas 1411,82kg; Kelelehan 3,83mm dan MQ 337,45kg/mm. beton aspal campuran panas sesuai dengan spesifikasi Bina Marga 2018 untuk lapis aus pada jalan dengan lalu lintas sedang hingga berat.
PEMBERHENTIAN PENGECORAN BETON UNTUK PEKERJAAN KONSTRUKSI LENTUR BERDASARKAN SNI 2847-2019 Pratikto, Pratikto; Susilowati, Anni; Gym Wijaya, Abdira
Construction and Material Journal Vol. 6 No. 2 (2024): Construction and Material Journal Vol. 6 No. 2 November 2024
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v6i2.7294

Abstract

The presence of construction joints is an inevitable aspect of field concrete casting. These joints occur when fresh concrete is poured over hardened concrete, which can impact the strength and integrity of the concrete structure. This study aims to evaluate the placement of concrete joints according to SNI 2847-2019, which recommends placing them at one-third of the span of the beam. Testing was conducted on unreinforced concrete beams with two different joint locations. The concrete used had a water-cement ratio (w/c) of 0.5 and a maximum aggregate size of 25 mm, with the mix design following SNI 7656-2012. The test results indicate that joints placed at one-third of the span exhibit better flexural strength compared to those located at the span's ends. The average flexural strengths of beams without joints, those with joints at one-third of the span, and those with joints at one-third of the end span are 1.95 MPa, 1.56 MPa, and 0.98 MPa, respectively. These findings support the SNI 2847-2019 recommendation for placing concrete joints at one-third of the span of the beam.
Co-Authors A, Ginanjar Ahmad Multazam, Ahmad Ananda Chaerul Imam Anggara, Teuku Anni Susilowati Arief, Saifullah Dennis Yudha Praditya Dian Fitria Agus Aristiyono Djoko Sutikno Eko Wiyono Eko Wiyono Fery Putra PT Gym Wijaya, Abdira Hakim, Haudiah Hakim, Kamal Amrizal Ilyas Renreng Imron Tsaluji Irfan Oktariadi Oktariadi Iskandar Muda Jessica Sagita Juliano, Hans Kusno Wijayanto Ma'arif, Moch. Syamsul Mega Nur Sasongko Muhammad Andika Ghifary Muhammad Arman Murdiyanto, Danang Nanda Mustaqim Ponco Muchamad Nur Cahyo Purnomo Budi Santoso Raden Bagus Anggietantyo Akiranda Rahmad Rahmad Rio Prasetyo Lukodono Rizal, Rikki Sofyan Rudolf Triamba Prasetyo Rudy Soenoko Sandra, Dinara Safina Sanjiwani, Yudistira Santosa, Irwan Satria, Kevin Muhammad Slamet Wahyudi Sonief, Achmad As’ad Sonief, Achmad As’ad Stella Junus Sugiyarto Sugiyarto Syarief, Eliana Tjuk Oerbandono Wahyono Suprapto Widhiyanuriyawan, Denny Widhiyanuriyawan Wirenda Sekar Ayu Yudy Surya Irawan