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All Journal Jurnal Pensil : Pendidikan Teknik Sipil Jurnal Teknik Sipil
dewi pertiwi
Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Institut Teknologi Adhi Tama Surabaya
Civil Engineering, Building, Construction & Architecture Education Other

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Penggunaan Styrofoam Sebagai Pengganti Sebagian Pasir Untuk Bata Ringan dewi pertiwi; Eka Susanti; Juliana Guteres
Jurnal Teknik Sipil Vol 3, No 1 (2022)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jts.2022.v3i1.3029

Abstract

Bata ringan merupakan bahan konstruksi yang digunakan sebagai pengganti bata merah untuk dinding pembatas, namun memiliki kelemahan, yaitu memiliki   berat jenis cukup tinggi, sehingga beban mati pada struktur menjadi besar. Untuk mengurangi berat jenis bata ini salah satu bahan alternatif yang dapat digunakan sebagai pengganti Sebagian pasir dalam pembuatan bata adalah limbah Styrofoam. Namun pengurangan berat jenis ini tidak diikuti dengan penambahan kuat tekan bataPenelitian ini menggunakan styrofoam sebanyak 0,5%, 1% dan 1,5%. Untuk mempercepat proses pegerasan dengan kekuatan awal dan akhir yang tinggi pada pembuatan bata ringan digunakan zat additive sikament 1% dari berat semen. Adapun pengujian pada penelitian ini meliputi Kuat Tekan, Berat Jenis dan Penyerapan.Hasil penelitian menunjukan bahwa semakin banyak penggunaan Styrofoam maka kuat tekan semakin berkurang. Kuat tekan bata ringan yang memenuhi standar kuat tekan bata merah pejal yaitu pada variasi styrfoam 0,5% dengan kuat tekan 5,14Mpa dan berat jenis 1,59gr/m3Selain itu berat jenis juga mengalami hal yang sama yaitu berat jenis juga berkurang seiring dengan bertambahnya Styrofoam yaitu 1,59gr/m3, 1,49 gr/m3, 1,35 gr/m3 tetapi sudah memenuhi syarat bata ringan. Sedangkan untuk penyerapannya didapatkan hasil 8%, 6,77% dan 9,42% dan semuanya memenuhi standar yaitu 25%. Maka komposisi campuran pada variasi Styrofoam 0,5% direkomendasikan hanya untuk bata ringan kelas 50.
Perbandingan Beton Normal Dengan Beton Menggunakan Abu Vulkanik Gunung Semeru Ditinjau Dari Kuat Tekan Dan Setting Time Nurul Rochmah; Ahmad Lukman Ariansyah; Dewi Pertiwi
Jurnal Teknik Sipil Vol 4, No 1 (2023)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jts.2023.v4i1.4547

Abstract

Heavy metal chemicals can be found in the volcanic ash from Mount Semeru's eruption. The content of heavy metals such as silica, alumina, iron, and lime can bind cement to concrete. Nowadays, volcanic ash that comes out of volcanic eruptions is used as a reducing material for cement. Some cement materials for concrete mixtures are viewed through the lens of concrete compressive strength. It was attempted to use volcanic ash from Mount Semeru to reduce cement material in concrete with an FC of 20 MPa. This study aims to determine the setting time and compare the compressive strength of concrete. It used a cylindrical test object with a diameter of 100 mm and a height of 200 mm. Each variation had three test objects. The test results indicated that the setting time for normal concrete was 195 minutes; AV variations of 45% got 225 minutes, or a 30-minute delay, from normal concrete; and 50% of AV variations got 255 minutes, or a 60-minute delay. Meanwhile, the average compressive strength test for normal concrete aged 28 days was 19.18 MPa, and the variation of AV concrete aged 45% gained 5.78 MPa or decreased by 30.12% of normal concrete. The average compressive strength in AV concrete aged 50% for 28 days was 5.83 MPa, or 30.40% lower than normal concrete.
Evaluasi Struktur menggunakan variasi tipe pelat lantai menggunakan evaluasi kapasitas: Studi kasus area kerja yang umum dipergunakan di Surabaya Dewi Pertiwi; Indra Komara; Yanisfa Septiarsilia; Dita Kamarul Fitriah
Jurnal Pensil : Pendidikan Teknik Sipil Vol 12 No 2 (2023): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jpensil.v12i2.31492

Abstract

Improvement of the current construction of midrise to high-rise building in Surabaya relatively needs to be evaluated, especially for compact office building area, it is very challenging to have an optimal space to the structural system with facilitate a satisfactory capacity performance. This paper makes a comparative study of the effectivity of structural plate structure in the compact office building between conventional slab (M1), waffle slab (M2) and flat slab (M3). A typical 5-story reinforced concrete building structure is selected as a case study within 6 m symmetrically span for each model. The proposed method used in this study is based on empirical analysis followed by numerical evaluation using SAP2000. The step initiated by deriving an optimal alternative of various type of slab. This study aims to emphasize the benefits to the functionality of the structural system which more efficient in term of structural capacity and its performance. As the result, M1 and M3 offer a similar behaviour due to the reinforcement and design performance with high slab deformation compared to the M2. M2 present a lower slab deflection under the supported of waffle element with the result almost twice smaller than M1 and M3.
Co-Authors Ahmad Lukman Ariansyah Dita Kamarul Fitriyah Eka Susanti Indra Komara, Indra Juliana Guteres Nurul Rochmah Yanisfa Septiarsilia