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Studi Eksperimen Uji Kuat Tekan, Geser dan Tarik Lentur Pasangan Batu Merah Lokal Produksi Daerah Blitar rustam, rustam; naibaho, armin; Pandulu, Galih Damar
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

On a thesis is conducting research and testing a red stone against strong press , slide and pull in a pair of red stone that came from three local namely kecamatan Wates the sample, Sanan kulon sub-district , and the kecamatan Srengat all located in the Blitar district . The purpose of experiments in this research is to observe strong destroyed the couple local brick with the volume of a mixture of one part portland cement: 3 of the tide of sand, and observing strong lekatan sliding a pair of bricks with a mixture of the volume of mortar that same with strong destroyed namely 1 part portland cement: 3 of the sand on thesis is conducting research and testing a red stone against strong press, slide and pull in a pair of local red stone that came from three regions in the sample is Wates, Sanan kulon subdistrict , and the kecamatan Srengat all located in the Blitar district. The results of testing strong press a pair of red stone of each region production different , the third in production after the test , a red stone from the production of Wates regions have the power to press the average highest namely by fk = 35 , 67 kg per cm2 .The order of strong press next namely those Sanan kulon of fk = 33,52 kg per cm2 Srengat areas later by fk = 32,20 kg per cm2. Sliding strong performance also show different numbers at each region production bricks from other regions Wates = fcs the average 5.44 kg per cm2, Sanan kulon fcs the average = 4,77 kg per cm2 Srengat areas later fcs an average of = 4,06 kg per cm2. Test shows a strong sliding also different in each region production of bricks from the fcs Wates average = 5.44 kg per cm2 , Sanan kulon fcs average = 4,77 kg per cm2 areas later an average of fcs Srengan = 4,06 kg per cm2 . To vigorous pull pliable also shows as distinct from each origin its production that is, strong pull pliable regions of Wates fcs = 2.17 kg per cm2, strong pull pliable Sanan kulon fcs = 2,08 kg per cm2 , strong pull pliable Srengat regions fcs = 8 kg per cm2 Keywords: Brick, strong press, strong sliding, strong pull pliable, blitar
The Effectiveness of Fly Ash as a Substitute of Cement For Marine Concrete Naibaho, Armin
Civil Engineering Journal Vol 4, No 4 (2018): April
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (773.297 KB) | DOI: 10.28991/cej-0309125

Abstract

The purpose of this research is to know the effectiveness of fly ash waste in marine concrete related to the average compressive strength to be used as a substitute for cement. The test is done for concrete base material, namely: coarse aggregate (gravel), fine aggregate (sand), fly ash, cement (PC = Portland Cement), water and additional material (superplasticizer). 10 cylinders were given each treatment with (0 %, 10 %, 20 %, 25 %) percentage of fly ash addition. The samples then soaked for 26 days in seawater. At 28th day, the sample was subjected to a compression test. Based on the results of analysis and discussion, then obtained: (1) The use of 10% fly ash amount will produce the biggest compressive strength  =  65.84 MPa; (2) When compared with the average compressive strength, the sample without using fly ash (0 %) has compressive power 62.02 MPa and 6.16 % increase in average compressive strength on the addition of 10 % fly ash 65.84 MPa, but in addition to 20 % fly ash there was a decrease of 9.13 % (56.36 MPa) and in addition of 25 % fly ash the average compressive strength decrease to 22.49 % (48.07 MPa).
PENGARUH PENGGUNAAN ABU TERBANG (FLY ASH ) TERHADAP KUAT TEKAN DAN PENYERAPAN AIR PADA MORTAR Naibaho, Armin; Takim, Takim; Ningrum, Diana
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Mortar or species is one of the building materials which serves to glue the bricks, brick, and stucco. During this time still using portland cement mortar and lime as the main connective materials are expensive. Therefore we need an alternative other connective materials that have cheaper prices and predicted can improve the compressive strength of mortar. Alternative fastening material used in this study is waste from coal combustion, ie fly ash (fly ash). This study uses a mixture of cement and sand composition of 1: 3 at a weight ratio of fly ash to cement amounted to 0%, 5%, 10%, 15%, 20%, 30%. Samples were tested compressive strength and water uptake is cube-shaped sample with a size of 5 cm x 5 cm x 5 cm. Based on the results of research conducted showed that the addition of fly ash was found to increase the compressive strength of mortar and act as filler so as to reduce water absorption, which in get the most optimum composition occurs in the percentage of 15% of the weight of the cement with the compressive strength at 28 days amounted to 420.00 Kg / cm² and water absorption of 1.67%
COARSE AGGREGATE COMPARATIVE ANALYSIS COMING FROM RIVER AND MOUNTAIN AGAINST STRONG PRESS AND STRENGTH CONCRETE DRAG Naibaho, Armin
Jurnal Rekayasa Sipil dan Lingkungan Vol 1 No 02 (2017): JURNAL REKAYASA SIPIL DAN LINGKUNGAN
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (627.738 KB) | DOI: 10.19184/jrsl.v1i02.6034

Abstract

Salah satu cara untuk meningkatkan kekuatan beton adalah memilih jenis agregat kasar yang tepat. Penelitian ini bertujuan mengetahui perbandingan kualitas agregat kasar dari batu gunung dan dari batu sungai terhadapkuat tekan beton fc? 30 MPa (K300)dan kuat tarik belah beton. Penelitian ini menggunakan agregat kasar dari batu gunung dengan warna abu-abu dan berdebu yang diperoleh dari Desa Beji Kec. Junrejo Kota Batu sedangkan agregat kasar dari batu sungai berwarna lebih gelap dan bersih berasal dari Sungai Brantas Kab. Malang dengan ukuran masing-masing maksimal 40 mm. Penelitian ini dilakukan di laboratorium bahan bangunan dan beton Politeknik Negeri ? Malang, dan pelaksaannya dimulai pada tanggal 29 Juli sampai 30 Agustus 2016. Pada pengujian kuat tekan beton menggunakan 10 benda uji sama dengan pengujian kuat tarik belah beton juga menggunakan 10 benda uji, masing-masing terdiri dari 5 sampel agregat kasar daribatu sungai dan 5 sampeldaribatu gunung. Pengujian kuat tekan beton menggunakan benda uji kubus (150 x 150 x 150 mm),pengujian kuat tarik belah beton menggunakan benda uji bentuk silinder (diameter 150 mm dan tinggi 30 mm). Seluruh prosedur pengujian, analisis hasil pengujian dan penarikan kesimpulan penelitian ini menggunakan SNI. Hasil uji kuat tekan beton menggunakan agregat kasar dari batu gunung 615,38kg/cm2masuk fc? 30 MPa (K600) sehingga lebih besar dari batu sungai 587,35kg/cm2masuk fc? 50 Mpa (K500). Hasil pengujian kuat tarik belah beton menggunakan agregat kasar dari batu gunung 29,6kg/cm2 lebih kecil dari batu sungai 35,5kg/cm2.Keduanya sama-sama kurang dari 10% terhadap kuat tekannya. Hasil uji kuat tekan beton yang menggunakan agregat kasar dari batu gunung lebih baik dari batu sungai,karenamudah homogen dan takaran air sisa 0,7 liter, sehingga nilai slump lebih rendah. Sedangkan nilai kuat tarik belah beton menggunakan agregat kasar dari batu sungai lebih tinggi dari batu gunung karena termasuk jenis batuan vulkanik yang memiliki pori lebih kecil sedangkan batu gunung termasuk batuanendapanyang tersingkap di dalam tanah. Kesimpulannya, penggunaan kedua agregat kasar tersebut layak digunakan sebagai material bangunan pada rencana beton fc? 30 Mpa (K300) dengan menggunakan mix desain SNI untuk RAB. Tetapi perlu diteliti kembali dengan proporsi campuran yang sama yang menggunakan mix design SNI 03-2834-1993.
PENENTUAN KOMPOSISI OPTIMUM BETON MARINE BERBASIS KONSEP REABILITAS Naibaho, Armin
Prokons: Jurnal Teknik Sipil Vol. 11 No. 1 Februari 2017
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

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Abstract

The terminology ?marine concrete? resrved for concrete material to structures in the marine area extreme condition. Many civil engineering building in the suburban sea area, for example dock and retaining scouring waves wall. Be expected of this fly ash utilization of waste can answer market (construction world) request to readymix concrete request with price which more economial but with quality which stay awake. This observation purpose to: (1) determining the optimum composition to concrete in the moring area (with extreme condition) with involves these aspecks as ?high performance concrete ? that is : high strength, high fracture resistance, low permeability, shrinkage controlled creep,(2). Study of interface zone condition with involves aspects of cohesion to determine Mode I Fracture Resistance.Based on the results of analysis and discussion, so we have: (1). Show that the used of the number fly ash 10% will produce the greatest compressive strength-caracteristik ?=? 58,56 MPa, whereas without the used of fly ash ( 0 %) obtained ?=? 56,44 MPa, (2). Calculation of probability and reability obtained values: to tested specimen which do not use fly ash (0%; Reliability is ? R = 1 ? P? = 1 ? 0,72 = 0,28 and the addition of 10% fly ash, obtained Reliability is ? R = 1 ? P? = 1 ? 0,70 = 0,30.Suggested the need for the selection of quality materials, procedures In the implemention and maintenance of? the test specimen after casted suggested thats need tight control to produce compressive strength field in maximum. ?Keywords : marine concrete, fly ash, compressive strength, mixture variatio, probability and reability.
EFEK PENAMBAHAN FLY ASH TIPE C TERHADAP KUAT TEKAN MORTAR Naibaho, Armin; Rahman, Aulia
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 5, No 1 (2020): EDISI MARET 2020
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (798.893 KB) | DOI: 10.33366/rekabuana.v5i1.1612

Abstract

Alternative cement replacement are widely observed due to environmental issues. The processes of cement production are indicated as one of the highest contributors in CO2 levels in the air. One of the substances used as alternative cement is fly ash because it is similar in nature to cement and the amount is abundant because it is a residual result of coal burning process in power plants. Generally, fly ash is classified into two types namely type C and F. Type C is rarely used because it is easy to harden. However, in further research, this type C has advantages in increasing the compressive strength of premature concrete. This research was made to obtain the optimum type C fly ash ratio with cementitious material on the mortar. Technically, the research was carried out by making mortar samples with a composition ratio of 1: 3, while the cement water factor was 50%. Then, the composition of cementitious is varied between PC and fly ash, starting from 0%, 25%, 50%, 75%, and 100%. Testing is conducted only in the first and second week to observe the development of the initial forces. However, not all combinations can be tested because the strength is too low. Only the 25% fly ash combination gives 20 MPa strength at 7 days, which outperforms a control sample of 19.36 MPa. Henceforth, the strength of fly ash samples tends to be lower when compared to control samples.ABSTRAK Bahan alternatif pengganti semen mulai banyak dicari karena isu lingkungan. Proses pembuatan semen terindikasi sebagai salah satu penyumbang tertinggi dalam kadar CO2 di udara. Salah satu substansi yang banyak digunakan untuk bahan pengganti semen adalah fly ash karena sifatnya serupa dengan semen dan jumlahnya melimpah sebagai hasil residu pembakaran tungku batu hara di PLTU. Umumnya, fly ash dikelompokkan menjadi dua jenis yaitu tipe C dan F. Tipe C jarang digunakan karena mudah mengeras. Namun, pada penelitian lebih lanjut, tipe ini memiliki kelebihan dalam meningkatnya kuat tekan umur prematur. Penelitian ini dibuat untuk mendapatkan rasio fly ash tipe C yang tepat dengan cementitious material pada mortar. Secara teknis, penelitian dikerjakan dengan membuat sampel mortar dengan perbandingan komposisi 1 : 3, sedangkan faktor air semen sebesar 50%. Kemudian, komposisi cementitious divariasikan antara PC dan fly ash, mulai dari 0%, 25%, 50%, 75%, dan 100%. Pengetesan dilakukan hanya pada minggu pertama dan kedua untuk mengamati perkembangan kekuatan awal. Namun, tidak semua kombinasi bisa diujikan karena kekuatannya terlalu rendah. Hanya kombinasi fly ash 25% saja yang memberikan kekuatan 20 MPa pada umur 7 hari, mengungguli sampel kontrol berkekuatan 19,36 Mpa. Sedangkan kekuatan sampel fly ash cenderung lebih rendah jika dibandingkan sampel kontrol. Kata kunci  : fly ash tipe C; mortar; kuat tekan.