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Mohd. Isneini
Universitas Lampung
Civil Engineering, Building, Construction & Architecture Other

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Analisis Perbandingan Pengaruh Campuran Kawat Bendrat dan Serat Baja pada Self Compacting Concrete (SCC) Anggraeni, Sylvia Dewi; Noorhidana, Vera Agustriana; Irianti, Laksmi; Isneini, Mohd.
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 10 No. 2 (2022): Edisi Juni 2022
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v10i2.2599

Abstract

Self compacting concrete (SCC) is a concrete innovation that is carried out to overcome problems during casting that does not require manual compaction even in hard-to-reach places such as tight reinforcement. In this study, 3D Dramix steel fibers and bendrat wire were used as a mixture in SCC with volume fractions of 0%, 0.5%, 1%, 1.5%. The addition of this fiber aims to determine the effect of the two fibers on SCC on compressive strength, split tensile strength and flexural tensile strength. The sample in this study was a cylinder with a diameter of 150 mm and a height of 300 mm for testing the compressive strength and split tensile strength while the flexural tensile strength used a beam sample with a size of 100x100x400 mm. All samples of these specimens were tested when the concrete was 28 days old. The increase in the value of compressive strength, split tensile strength and flexural strength at the addition of 1.5% steel fiber were 26.39%, 64.71% and 111.88% respectively for concrete with 0% fiber. While the increase in compressive strength, split tensile strength and flexural strength with the addition of 1.5% bendrat wire was 20.31%, 60.74% and 76.18% for concrete with 0% fiber, respectively.
Evaluasi Kinerja Struktur Bangunan Bertingkat Akibat Gempa Berdasarkan Simpangan Dengan Analisis Respon Spektrum Satria, Fungky Andi; Isneini, Mohd.; Kusnadi, Andi; Widyawati, Ratna
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 10 No. 3 (2022): Edisi September 2022
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v10i3.2660

Abstract

Apartemen Kingland Avenue Serpong adalah gedung bertingkat tinggi yang berada di Jalan Raya Serpong KM. 08 Pakulonan, Serpong Utara, Tangerang Selatan. Gedung ini terdiri dari 2 Basement, 24 lantai, dan atap dengan elevasi ±116,70 m. Sebuah gedung harus memiliki kinerja yang optimal termasuk dalam menahan gempa sehingga keselamatan penghuni lebih terjamin. Analisis respon spektrum adalah salah satu metode yang umum digunakan dalam menganalisis beban gempa untuk mengetahui kinerja bangunan berdasarkan nilai simpangannya. Penelitian ini bertujuan untuk mengetahui level kinerja struktur dan simpangan antar tingkat.Berdasarkan hasil analisis respon spektrum secara keseluruhan nilai simpangan antar tingkat berada dibawah simpangan antar tingkat izin, dengan nilai rasio simpangan total maksimum arah x sebesar 0,0016 dan 0,0020 pada arah y. Berdasarkan ATC-40, Level kinerja struktur Apartemen Kingland Avenue Serpong berada pada level kinerja Immediate Occupancy, dengan dampak sedikit kerusakan struktural yang terjadi, kapasitas sistem penahan gaya vertikal dan lateral pada struktur masih sama dengan kondisi dimana gempa belum terjadi, sehingga bangunan aman dan dapat langsung dipakai.
Pengaruh komposisi penambahan serat polypropylene terhadap kuat tekan dan kuat lentur self compacting mortar (SCM) Suma, Damas Novalda; Noorhidana, Vera Agustriana; sebayang, surya; Isneini, Mohd.
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 1 (2023): Edisi Maret 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i1.3019

Abstract

AbstractSelf compacting mortar is a mortar which is able to flow under its own weight and completely fill the formwork without the need for external compaction, while maintaining its homogeneity. This study aims to determine the effect of variations in the addition of polypropylene fiber to the compressive strength and flexural strength of self compacting mortar (SCM), as well as to determine the optimum variation of the addition of polypropylene fiber in mixed mortar. In this study, the test specimens were made with a water-cement factor of 0.4 and the ratio between cement and fine aggregate was 1:2.5 and the addition of 2% superplasticizer by weight of cement and the addition of polypropylene fibers with variations of 0%, 0.04%, 0.06%, 0.08%, 0.1% of the volume of the mortar test object. Tests were carried out on specimens aged 28 days. The results showed that the compressive strength of SCM experienced an optimum increase in the addition of 0.04% polypropylene fiber which was 34.81 MPa with an increase percentage of 14.07% of mortar without fiber, while the flexural strength of SCM increased with increasing variations of polypropylene fiber until the increase The optimum variation occurred at 0.1% polypropylene fiber, namely 11.72 MPa with a percentage increase of 26.05% from mortar without fiber. Key words : polypropylene fiber, superplasticizer, compressive strength, flexural strength.
Analisis Variasi Layout Shearwall Dengan SNI 1726-2019 Terhadap Perilaku Bangunan Bertingkat (Studi Kasus: Gedung Pelayanan Publik Satu Atap Bandar Lampung) Setiawan, Andi; Isneini, Mohd.; Noorhidana, Vera Agustriana; Husni, Hasti Riakara
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3171

Abstract

Earthquake resistant buildings are not designed only by strengthening the resistance of the structure, but are also designed to reduce earthquake forces. One of the structural reinforcement elements that can reduce earthquake forces is shearwall. The variation of shearwall layout will have a different effect on the performance level of the structure. This study aims to determine the performance level of the structure with a variety of shearwall layouts in a building structure model using the pushover analysis method. Determining the level of structural performance using pushover analysis is carried out using the help of structural analysis programs based on SNI 1726-2019, SNI 1727-2020, SNI 2847-2019 and ATC-40. From the research results it was found that the structural performance level according to ATC-40 (1996), for model 1 and model 6 were included in the damage control category, while for model 2, model 3, model 4 and model 5 were included in the immediate occupancy category. Placement of shearwall which has the optimum value according to ATC-40 for the X direction occurs in model 2 with the shearwall installed in an L shape which is placed near the center of mass of the building. Whereas in the Y direction it occurs in model 3 with the shearwall installed in an L shape which is placed away from the center of mass of the building. Key words : shearwall, model, structure performance level, pushover analysis.
Studi Perbandingan Beban Gempa Pada Gedung Rawat Inap Non Bedah RSUD Dr. H. Abdul Moeloek, Bandar Lampung Dengan Analisis Respon Spektrum Sesuai SNI 1726:2012 dan SNI 1726:2019 Hania Cipta, Ade Permata; Isneini, Mohd.; Husni, Hasti Riakara; Kusnadi, Andi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3189

Abstract

The rapidly growing population is directly proportional to the increasing amount of land use, especially in urban areas, one of which is in the city of Bandar Lampung. The construction of vertical structures or high-rise building structures is an option in overcoming the limited land. However, high-rise building structures are considered to be risky to lateral loads such as earthquake loads, so that in planning, earthquake loads must be considered.This study aims to determine differences in response to the earthquake acceleration spectrum in the City of Bandar Lampung, especially the Non-Surgical Inpatient Building at Dr. H. Abdul Moeloek based on SNI 1726:2012 and SNI 1726:2019. Based on the results of this study, it was found that due to the influence of the earthquake the input spectrum response was in accordance with SNI 1726:2012 and SNI 1726:2019, the base shear force due to the earthquake spectrum response for SNI 1726:2012 was 12900.4864 kN and SNI 1726:2019 was 14931.0787 kN . Interstory drift between levels that occur in the structure are still in the safe category because they do not exceed the story drift allowable levels, 48.4615 mm.
Pengaruh Penggunaan Ordinary Portland Cement (OPC), Semen Modifikasi Jenis III dan Jenis IV, dan Portland Composite Cement (PCC) Terhadap Kuat Tekan Beton Prameswari Tw, Aqilla Regita; Irianti, Laksmi; Sebayang, Surya; Isneini, Mohd.
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 4 (2023): Edisi Desember 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i4.3759

Abstract

Abstract Cement is one of the main materials used in making concrete. Cement is useful as a hydraulic binder when mixed with water. Based on the differences in usage characteristics and properties of cement, this research will discuss the effect of using OPC cement (type I), modified cement (type III and type IV), and PCC cement to see how the compressive strength of concrete develops over time with testing periods of 3 days, 7 days, 14 days, and 28 days. The research method used is an experimental study aimed at obtaining a comparison of compressive strength of concrete using OPC and PCC cement. The test specimens used are cylindrical in shape (diameter 150 mm and height 300 mm) with a total of 48 samples with 4 variations, each consisting of 3 samples. The planned concrete quality is 25 MPa. The highest compressive strength of concrete at 3 days, 7 days, 14 days, and 28 days is obtained by OPC cement, modified cement type III, PCC cement, and modified cement type III, while the lowest compressive strength of concrete at 3 days, 7 days, 14 days, and 28 days is obtained by modified cement type IV. Key words : cement, OPC cement, PCC cement, modified cement, compressive strength. AbstrakSemen merupakan salah satu bahan utama dalam pembuatan beton. Semen berguna sebagai perekat hidrolis ketika dicampur dengan air. Berdasarkan perbedaan karakteristik penggunaan dan sifat pada semen, maka penelitian ini akan membahas mengenai pengaruh penggunaan semen OPC (jenis I), semen modifikasi (jenis III dan jenis IV), dan semen PCCuntuk melihat bagaimana kuat tekan beton terhadap perkembangan umur beton dengan waktu pengujian beton berumur 3 hari, 7 hari, 14 hari, dan28 hari. Metode penelitian yang akan dilakukan adalah studi eksperimental yang bertujuan untuk mendapatkan hasil perbandingan kuat tekan beton pada semen OPC dan semen PCC. Benda uji yang digunakan berbentuk silinder (diameter 150 mm dan tinggi 300 mm) dengan sampel sebanyak 48 buah dengan 4 variasi yang masing-masing terdiri dari 3 sampel. Mutu beton yang direncanakan, yaitu 25 MPa. Kuat tekan beton terbesar pada umur 3 hari, 7 hari, 14 hari, dan 28 hari secara berturut diperoleh oleh semen OPC, semen modifikasi jenis III, semen PCC, dan semen modifikasi jenis III, sedangkan kuat tekan beton terkecil pada umur 3 hari, 7 hari, 14 hari, dan 28 hari diperoleh oleh semen modifikasi IV. Kata kunci : semen, semen OPC, semen PCC, semen modifikasi, kuat tekan.
Pengaruh Air Payau Terhadap Kuat Tekan Beton dengan Semen PCC Nugraha, Aditya Wisnu; Niken, Chatarina; Wahono, Endro Prasetyo; Isneini, Mohd.
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 4 (2023): Edisi Desember 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i4.3823

Abstract

AbstractConcrete is a type of construction that is widely used today, one of which is water building infrastructure. Concrete must be resistant to various environmental conditions, such as brackish water. Brackish water is an aggressive environment with chemical contents that can interfere with the compressive strength of concrete. Currently, PCC type cement (Portland Composite Cement) tends to be more widely used than OPC (Ordinary Portland Cement) because the price is cheaper and more environmentally friendly, which has an impact on global warming. The aim of this research is to determine the impact of the aggressive environment of brackish water on the compressive strength of concrete with PCC cement. 18 cylindrical test objects with a diameter of 15 cm and a height of 30 cm were used, which were divided into two types of tests, namely protected concrete and concrete submerged in brackish water. Each test is carried out with three test objects at concrete ages of 28 days, 56 days, and 90 days. The data obtained was then analyzed using the Dixon criteria in accordance with ASTM E 178-02. Compressive strength testing is obtained from the Compression Testing Machine (CTM). The research results show that brackish water has a negative impact on the compressive strength of concrete. At the age of 28 days, the concrete submerged in brackish water reaches its design compressive strength. However, at 56 days and 90 days, the concrete experienced a decrease in compressive strength compared to protected concrete. This is because there is chloride and sulfate content in brackish water, which can damage the structure in the concrete.Keywords : brackish water, compressive strength, concrete, PCC. AbstrakBeton merupakan jenis konstruksi yang banyak digunakan saat ini salah satunya tiang pancang pada dermaga. Beton harus tahan terhadap berbagai kondisi lingkungan seperti air payau. Air payau adalah lingkungan agresif dengan kandungan kimia yang dapat mengganggu kuat tekan beton. Saat ini, semen jenis PCC (Portland Composite Cement) cenderung lebih banyak digunakan dibanding OPC (Ordinary Portland Cement) karena harganya yang lebih murah dan lebih ramah lingkungan karena pemanasan global. Tujuan penelitian ini adalah mengetahui dampak lingkungan agresif air payau terhadap kuat tekan beton dengan semen PCC. Digunakan 18 buah benda uji silinder dengan ukuran diameter 15 cm dan tinggi 30 cm yang terbagi menjadi dua jenis pengujian yaitu beton terlindung dan beton terendam air payau. Dimana setiap pengujian dilakukan dengan 3 buah benda uji pada umur beton 28 hari, 56 hari dan 90 hari. Dari data yang diperoleh kemudian dianalisis dengan kriteria dixon sesuai dengan ASTM E 178-02. Pengujian kuat tekan didapat dari alat Compression Testing Machine (CTM). Hasil penelitian menunjukkan bahwa air payau berdampak negatif terhadap kuat tekan beton. Pada umur 28 hari, beton terendam air payau mencapai kuat tekan rencananya. Namun, pada umur 56 hari dan 90 hari beton mengalami penurunan kuat tekan jika dibanding dengan beton terlindung. Hal ini dikarenakan terdapat kandungan klorida dan sulfat pada air payau yang dapat merusak struktur didalam beton.Kata kunci : air payau, beton, kuat tekan, PCC.
Co-Authors Agustina, Nadia Andi Kusnadi Andi Setiawan Anggraeni, Sylvia Dewi Asmara, Kabul Budi Bayzoni Bayzoni, Bayzoni Clever, Arnaldo D.W.S.B.U, Chatarina Niken Endro Prasetyo Wahono Fikri Alami Firdha, Risty Amelia Hania Cipta, Ade Permata Hasti Riakara Husni Hussein, Imam Karima, Fadila Amelia Laksmi Irianti Niken, Chatarina Novrian, Ridho Rizky Nugraha, Aditya Wisnu Prameswari Tw, Aqilla Regita Putra, Mayka Purnama Ratna Widyawati Satria, Fungky Andi Suma, Damas Novalda Surahman, Ridho Surya Sebayang Vera Agustriana Noorhidana