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MIKRO SILIKA SEBAGAI BAHAN TAMBAH UNTUK MENINGKATKAN KUAT TEKAN BETON MUTU TINGGI Mahyar, Herri
JURNAL ILMU PENGETAHUAN DAN TEKNOLOGI TERAPAN "REINTEK" (REKAYASA INOVASI TEKNOLOGI) Vol 7, No 1 (2012): JURNAL ILMU PENGETAHUAN DAN TEKNOLOGI TERAPAN "REINTEK" (REKAYASA INOVASI TEKNO
Publisher : JURNAL ILMU PENGETAHUAN DAN TEKNOLOGI TERAPAN "REINTEK" (REKAYASA INOVASI TEKNOLOGI)

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Abstract

High Quality concrete have used as many last construction material for a number of years by using is assorted of materials add. high Quality concrete classified as concrete with high strength  (  bigger than 400 singk / cm2 ) . Intention of this research that is to be is optimal of strength depress high quality concrete with materials growing microly of type silica of sikafume. Result of research indicate that by enhancing is micro of  type silica of sikafume, strong depress tired concrete 743,10 singk / cm2.
PERENCANAAN GELAGAR BETON PRATEGANG PADA JEMBATAN KEUDE RANTO PEUREULAK KABUPATEN ACEH TIMUR Wahyuni, Wahyuni; Mahyar, Herri
Portal: Jurnal Teknik Sipil Vol 9, No 1 (2017)
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/portal.v9i1.613

Abstract

Keude Ranto Peureulak Bridge a bridge connecting Keude Ranto Panjang with Keude Geurobak village and other villages in Ranto Peureulak Sub-district, East Aceh District. Keude Ranto Peureulak Bridge is planned with a span length of 20.8 meters and width of 7 meters. The longitudinal axis planned for the bridge is the posttractive pretreat type concrete girder. The girder plan includes gelagar dimensioning, stress calculation, prestress loss, cross-sectional capacity, deflection control, and drawing. The quality of concrete used is fc = 40 Mpa, the tendon used is seven wire strand diameter ½ inch with 51 mm diameter tendon sheath. Tendon fpu voltage = 1860 Mpa, fy threaded steel reinforcement = 320 Mpa, plain steel reinforcement fy = 240 Mpa, and efficient cross-sectional height is 0.9 meters. From the calculation results obtained the moment that occurred on the girder of 2563,439 kNm on the calculation of the third combination. The number of tendons obtained from the calculation is 3 pieces with 7 pieces of strand on each tendon. Losing the total prestress force is 380,694 Mpa. The principal reference is used D13 mm, the shear reinforcement is used Ø10-100 mm at the support area and Ø10-600 mm in the field area. The ultimate moment capacity of the prestress beam is 5575.60 kNm from the calculation of the third combination. The largest deflection of 0.0247 meters due to a combination of two loads. All the results of the calculations obtained are safe to use.Keywords: girder, prestress, tendon, reinforcement, deflection
PEMAKAIAN ADDITIVE MICRO SILICA DALAM CAMPURAN BETON UNTUK MENINGKATKAN KUAT TEKAN BETON NORMAL Mahyar, Herri
Portal: Jurnal Teknik Sipil Vol 5, No 1 (2013)
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/portal.v5i1.953

Abstract

Micro silica types sikafume is one plus altemate materials (additive) than fly ash is often used to increase the compressive strength of concrete. Composition of the same material used on condition fas 0.5. Addition sikafume in concrete mixed with composition 0%, 5%, 10%, 15, and 20%. The Specimens used in this study is a concrete cylinder diameter of 15 cm and height 30 cm by 5 pieces for each sample. Compressive strength testing done at the time the specimen reaches the age of 3,7, 14, and 28 days. The result showed the maximum compressive strength of concrete at 28 days is 21 MPa without adding sikafume. Maximum compressive strength due to the use of additive type sikafume (15%) achieved at the age of 28 days with a concrete compressive strength of 34 MPa.
PEMANFAATAN ABU SEKAM PADI SEBAGAI BAHAN CAMPURAN BETON AGROPOLYMER Musbar, Musbar; Rizal, Faisal; Mahyar, Herri
Portal: Jurnal Teknik Sipil Vol 2, No 2 (2010)
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/portal.v2i2.486

Abstract

Constribution of production PC every year at glasshouse emission continue to experience of increase, estimated about 7% from totalizing the glasshouse emission transmitted to atsmosphere earth. On that account, is very needed the new inventions of concrete technology to produce the friendly environment. Some alternatives among its by making the concrete polymer which materials base natural, be like fly ash and rice husk ash ( RHA ) . this research use the RHA upon which mixture to make the concrete agropolymer. Concrete agropolymer use fixative of silicate sodium condensation mixture, hydroxide sodium and RHA. Variable remain to this research is strength the concrete agropolymer. Free variable consist of the ratio variation water and agropolymer solid that is 0,6 and 0,7, treatment time during 3,7, 14 and 21 day. Temperature treatment of object test at room temperature, each;every variation made by the object test the cube with side of 10 cm counted 5. This research can give the alternative to invention of friendly concrete of environment by exploiting the waste materials natural agricultural produce, but not yet application can at building construction because of strength depress the concrete still lower. Strength depress the obtained by concrete range from 4 - 5 Mpa at the age of concrete of 21 day. It’s needed to do the further research to get the ideal composition of materials concrete agropolimer this so that can be obtained the strength depress the application concrete able to building construction.Keyword : RHA, agropolymer, concrete strength
EVALUASI KUALITAS PELAYANAN KEPADA MAHASISWA JURUSAN TEKNIK SIPIL DENGAN MODEL SERVQUAL UNTUK MENINGKATKAN MUTU LULUSAN Mahyar, Herri; Syahyadi, Rizal
Portal: Jurnal Teknik Sipil Vol 11, No 1 (2019)
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/portal.v11i1.1514

Abstract

Abstrak ? Penelitian ini dilakukan untuk mengetahui kualitas layanan yang telah diberikan kepada siswa oleh Departemen Teknik Sipil. Hal ini mengingat kualitas mahasiswa pascasarjana diukur berdasarkan indeks prestasi kumulatif (IPK) lebih kecil dari 2,75, persentase meningkat dari tahun ke tahun. Dalam penelitian ini mencoba menganalisis kualitas pelayan kepada siswa dengan model melayani untuk mengetahui hal-hal yang mempengaruhi kualitas pelayanan. Selain itu, penelitian ini juga dapat bermanfaat untuk meningkatkan beberapa atribut layanan kepada siswa. Berdasarkan hasil penelitian ada kesenjangan antara layanan yang diterima dengan yang diharapkan oleh siswa atau kinerja JTS. Ini menunjukkan kesenjangan terbesar ke dimensi terkecil dari dimensi Berwujud (1,331), dimensi Reabilitas (1,015), dimensi Emphaty (0,969), dimensi Assurance (0,802), dan dimensi Responsiveness (0,801). Nilai gap negatif terbesar adalah dimensi reabilitas kemudahan memperoleh layanan akademik (bimbingan PKL dan TGA) yaitu -1,470, kehadiran dosen sesuai jadwal kursus (tepat waktu) dengan nilai gap -1,465 dan dimensi Assurance dengan atribut layanan dosen. selalu menemani siswa selama kegiatan latihan -1,460).Kata kunci : Servqual, Kualitas Layanan, Gap.Abstract ? This research is conducted to know the quality of service that has been given to the students by the Department of Civil Engineering. This is considering the quality of graduate students measured based on cumulative achievement index (GPA) is smaller than 2.75, the percentage increases from year to year In this study tried to analyze the quality of waiters to students with servequal model to know things that affect the quality of service. In addition, this research can also be useful to improve some attributes of services to students. Based on the results of research there is a gap between the service received with the expected by the student or the performance of JTS. This shows the largest gap to the smallest of the Tangible dimensions (1.331), Reability dimensions (1.015), Emphaty dimensions (0.969), Assurance dimensions (0.802), and Responsiveness dimensions (0.801). The biggest negative gap value is the reability dimension of ease of obtaining academic service (PKL and TGA guidance) that is -1,470, Lecturers attendance according to schedule of course (on time) with gap value -1,465 and Assurance dimension with attribute of lecturer service always accompany student during practice activity -1,460).Keywords: Servqual, Service Quality, Gap.
TEKNIK PEMASANGAN PIPA AIR BERSIH PADA RUMAH SEDERHANA Gani, Fauzi A.; Hanif, Hanif; Mahyar, Herri
Jurnal Vokasi Vol 1, No 1 (2017): Jurnal Vokasi
Publisher : Politeknik Negeri Lhokseumawe

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Abstract

Pemerintahan kota Lhokseumawe terdiri dari 56 desa dan 4 kecamatan yaitu Muara Satu, Muara Dua, Banda Sakti dan Blang Mangat. Jumlah penduduk saat ini adalah 171.163 jiwa. Dari komposisi jumlah penduduk, menunjukkan bahwa angka dependency ratio pada tahun 2010 sebesar 57,58, ini bermakna bahwa dalam setiap seratus orang usia produktif harus menanggung beban penduduk non produktif paling kurang 57 orang. Tingkat partisipasi pendidikan terrendah lebih dominan ditemui dikecamatan Blang Mangat. Data BPPS yang diperoleh tercatat jumlah penduduk usia produktif sangat dominan di Desa Mesjid puenteuet. Semakin banyak penduduk usia produktif menjadi tantangan bagi pemerintah Kecamatan blang Mangat dan Kota Lhokseumawe pada umumnya, terutama dalam penyediaan lapangan kerja yang sekaligus dapat menyebabkan pengangguran. Unit Pengabdian dan penelitian Politeknik telah mencoba mengurangi angka ketergantungan tersebut melalui pelatihan Teknik pemasangan Pipa air bersih. Tingkat kemampuan diukur berdasarkan tingkat kehadiran, penguasaan materi teori melalui quiz dan praktek yang diakomulasikan dalam bentuk hasil pre test dan post test. Evalusi rata-rata nilai peserta di atas nilai pre test, hal ini memperlihatkan peningkatan kemampuan peserta setelah mengikuti kegiatan dan indikator keberhasilanya adalah hasil pemasangan pipa dalam bentuk terpasang lapangan, kemudian diuji dengan menghidupkan pompa, sehingga air mengalir dalam pipa tanpa bocor,Kata Kunci: Ulir, Elbow, Tee, Socket, waterpas,