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All Journal Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain Teras Jurnal KACANEGARA Jurnal Pengabdian pada Masyarakat Journal of Engineering and Scientific Research (JESR) Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung
Vera Agustriana Noorhidana
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Pengaruh Serat Baja Terhadap Kuat Tarik Lentur Balok Beton yang Disambung Utami, Tri Ratna; Noorhidana, Vera Agustriana; Sebayang, Surya; Helmi, Masdar
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.v10i2.2596

Abstract

The casting of concrete at different times often occurs, this is due to insufficient casting time, expansion or connection of structural components, strengthening of structures with additional dimensions, and so on. Thus there will be the addition of a new layer of concrete (overlay). This study is to determine the flexural tensile strength of concrete beams for joining old concrete and new concrete with the addition of steel fiber volume fractions of 0%, 1%, 1.5%, and 2% in the substrate layers overlay and also the compressive strength of the concrete in each layer. The samples in this study were beams (15 x 15 x 60 cm) with a thickness of 7.5 cm for substrate and overlay for flexural tensile strength testing and cylinders (15 cm in diameter and 30 cm in height) for compressive strength testing. From the results of the study, it was found that the flexural tensile strength of the beam with the addition of steel fibers in the substrate layer was higher than the addition of steel fibers in the overlay layer. The addition of steel fibers in the substrate and overlay layers makes the beam more ductile. The maximum flexural tensile strength of the beam with the addition of steel fibers in the substrate layer occurs at  volume fraction 1.5%, has an increase of 114.03% from the joint beam without steel fibers while the addition of steel fibers in the overlay layer occurs at volume fraction 2%, has an increase of 8.66% of the joint beams without steel fibers.
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.
Studi Eksperimental Pengaruh Variasi Ukuran Recycled Coarse Aggregate (RCA) Terhadap Kuat Tekan dan Kuat Tarik Belah Beton Mutu Normal. Putri, Nur Mila; Irianti, Laksmi; Sebayang, Surya; Noorhidana, Vera Agustriana
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.v10i2.2607

Abstract

AbstractScattered concrete waste can cause adverse effects for the surrounding environment. It  must be recycled to reduce the waste, one of which is as a substitute for coarse aggregates of broken stones. To find out the feasibility of RCA concrete must be done material testing as well as testing of compressive strength and tensile strength using a cylinder test object measuring 15 x 30 cm. In this study, the materials used were RCA with a maximum aggregate size of 1 cm, 2 cm, and 4 cm which were randomly taken around the Materials and Construction Laboratory. So it is expected that unused concrete can be reused to reduce existing concrete waste. The results of 28-day split compressive strength for aggregate size of 1 cm on 28,99 MPa, 2 cm on 28,52 MPa, and 4 cm on 26,29 MPa. 28-day RCA size of 1 cm on 28,21 MPa, 2 cm on 27,72 MPa, and 4 cm on 25,09 MPa. The results of 28-day split tesnsile strength for 1 cm on 3,18 MPa, 2 cm on 2,81 MPa, and 4 cm on 2,58 MPa. 28-day RCA for aggregate size of 1 cm on 2,99 MPa, 2 cm on 2,48 MPa, and 4 cm on 2,31 Mpa. From these results, it is also known that the decrease in concrete testing results using RCA against splits is 2,69–4,56% for compressive strength and 5,97–10,47% for tesnsile strength.Keyword: RCA, size, compressive strength, splitting tesnsile test. AbstrakLimbah beton yang berserakan dapat menyebabkan dampak buruk bagi lingkungan sekitar. Untuk mengurangi limbah tersebut harus dilakukan daur ulang, salah satunya yaitu sebagai pengganti agregat kasar pada beton. Untuk mengetahui kelayakan RCA tersebut harus dilakukan pengujian material serta pengujian kuat tekan dan kuat tarik belah pada beton dengan menggunakan benda uji silinder berukuran 15 x 30 cm. Pada penelitian ini, material yang digunakan yaitu RCA dengan ukuran maksimum agregat 1 cm, 2 cm, dan 4 cm yang diambil secara acak di sekitar Laboratorium Bahan dan Konstruksi. Diharapkan beton yang sudah tidak terpakai dapat digunakan kembali agar mengurangi limbah beton yang ada.Hasil pengujian kuat tekan beton 28 hari yang menggunakan split ukuran 1 cm sebesar 28,99 MPa, 2 cm sebesar 28,52 MPa, dan 4 cm sebesar 26,29 MPa. Pada beton RCA umur 28 hari untukukuran 1 cm sebesar 28,21 MPa, 2 cm sebesar 27,72 MPa, dan 4 cm sebesar 25,09 MPa. Hasil pengujian kuat tarik belah 28 hari pada beton yang menggunakan split ukuran 1 cm sebesar 3,18 MPa, 2 cm sebesar 2,81 MPa, dan 4 cm sebesar 2,58 MPa. Pada beton RCA umur 28 hari ukuran 1 cm sebesar 2,99 MPa, 2 cm sebesar 2,48 MPa, dan 4 cm sebesar 2,31 MPa. Dari hasil tersebut juga diketahui penurunan hasil pengujian beton RCA terhadap beton split yaitu sebesar 2,69 – 4,56% untuk kuat tekan dan 5,97 – 10,47% untuk kuat tarik belah. Kata kunci: RCA, ukuran, kuat tekan, kuat tarik belah.
Studi Eksperimental Pengaruh Substitusi Sebagian Agregat Kasar Dengan Recycled Coarse Aggregate (RCA) Terhadap Kuat Tekan Dan Kuat Tarik Belah Beton Mutu Normal Putri, Yoleta Tri; Irianti, Laksmi; Sebayang, Surya; Noorhidana, Vera Agustriana
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.v10i3.2618

Abstract

The availability of crude aggregates on the market is increasing, and the greater waste of the construction industry is concrete, one of which is testing Laboratory Materials and Construction, Engineering Faculty, Lampung University. Research is required to identify the compressive strength value, split tensile strength value, volume weight and the effect of the age correction factor of concrete when partial replacement of coarse aggregate with Recycle Coarse Aggregate (RCA) has a design compressive strength of 25 Mpa and the test object is a cylinder with a 150x300mm.Based on the analysis of research data, it was found that from each factor of concrete age 7, 14 and 28 days as well as variations in partial substitution of coarse aggregate with a content of 25%, 50% and 100% RCA experienced a decrease in the value of the compressive strength and split tensile strength of concrete at each test age compared to the content of the concrete 0% RCA. For compressive strength values with average values at the age of RCA content respectively 0%, 25%, 50% and 100%, namely the age of 7 days 23,03 MPa, 22,57 MPa, 18,63 MPa and 16,71 MPa, 14 days 28,29 MPa, 28,11 MPa, 27,48 MPa and 21,79 MPa and 28 days 28,53 MPa, 28,16 MPa, 27,90 MPa and 27,74 MPa. For the value of the split tensile strength of concrete with an average value at the age of RCA content of 0%, 25%, 50% and 100%, namely the age of 7 days is 2,40 MPa, 2,27 MPa, 2,09 MPa and 1,79 MPa, at 14 days 2,71 MPa, 2,67 MPa, 2,49 MPa and 1,92 MPa and at 28 days 2,81 MPa, 2,78 MPa, 2,72 MPa and 2,48 Mpa.
Pengaruh Penggunaan Fly Ash Sebgai Bahan Pengganti Sejumlah Semen dan Bahan Tambahan Terhadap Kuat Tekan pada Self Compacting Concrete (SCC) Sahast, Corry Jayaputri; Noorhidana, Vera Agustriana; Irianti, Laksmi; Sebayang, Surya
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.v10i2.2628

Abstract

Self Compacting Concrete (SCC) is an innovation of concrete which has an ability to flow on its own to fill the empty voids between reinforcement and formwork without support of compaction equipment to obtain its optimum compaction. In this research, concrete cylinder with dimension of 15 cm for diameter and 30 cm for height were used as a specimen and mixed with fly ash type C as cement partial substitute material and additional substance by variation of 0%, 3%, 6%, 9%, and 12% with water cement ratio of 0.41. Slump flow test was perform to identify concrete flowability and workability followed by concrete compression test to identify compressive strength which was conducted at the age of 35 days and 56 days. Due to the fact that percentage variation of fly ash increment, the value of slump flow test was experiencing degradation whereas the compressive strength was increased. Nonetheless, the optimum fly ash application appeared when fly ash was applied as a cement partial substitute at variation of 3%, which provide concrete compressive strength in the amount of 35.98 MPa (35 days) and 33.68 MPa (56 days), and the value of concrete density were 2313.21 kg/m3 and 2279.66 kg/m3 , where the standard of slump flow test and T50 values had accomplished.
Analisis Perbandingan Pengaruh Penambahan Serat Baja Karbon 3D Dramix dan Serat Kawat Bendrat Terhadap Kuat Tekan, Kuat Tarik Belah, dan Kuat Tarik Lentur Pada Beton Mutu Normal Riana, Netta; Noorhidana, Vera Agustriana; Irianti, Laksmi; Alami, Fikri
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.v10i2.2629

Abstract

AbstractIn general, the structural characteristics of concrete are that it has a high compressive strength but is weak in tensile strength. The aim of this study was to coMPare the effects of adding Dramix 3D carbon steel fiber and bendrat wire fiber on the compressive strength, split tensile strength, and flexural tensile strength in normal quality concrete. In this study, the addition of Dramix 3D carbon steel fiber and bendrat wire fiber with volume fractions of 0%, 1%, 1.5%, and 2% of the volume of the concrete mix was evaluated. The samples for this study were a cylinder with a diameter of 15 cm and a height of 30 cm for the compressive strength and split tensile strength tests, and a beam measuring 10 x 10 x 40 cm for the flexural tensile strength test. From the results of the study, it was found: (1) The compressive strength maximum occur of the addition of bendrat wire fiber at Vf 1% increased by 19.33% from the compressive strength of concrete at Vf 0%., (2) The split tensile strength maximum occur of the addition of 3D Dramix carbon steel fibers at Vf 2% increased by 88.38% from the split tensile strength of Vf 0% concrete., and (3) The flexural tensile strength maximum occur of the addition of Dramix 3D carbon steel fibers at Vf 2% increased by 465.63% from the flexural tensile strength of concrete at Vf 0%. Key words : Dramix 3D carbon stell fiber, bendrat wire fiber, compressive strength, split tensile strength, flexural tensile strength. AbstrakBeton mempunyai kuat tekan yang besar tetapi lemah terhadap kuat tarik. Tujuan dari penelitian ini adalah untuk mengetahui perbandingan pengaruh penambahan serat baja karbon 3D Dramix dan serat kawat bendrat terhadap kuat tekan, kuat tarik belah, dan kuat tarik lentur pada beton mutu normal. Pada penelitian ini, dilakukan penambahan serat baja karbon 3D Dramix dan serat kawat bendrat dengan volume fraksi sebesar 0%, 1%, 1,5% dan  2% dari volume adukan beton. Sampel pada penelitian ini berupa silinder dengan (diameter 15 cm dan tinggi 30 cm) untuk uji kuat tekan dan kuat tarik belah, dan balok berukuran (10 x 10 x 40 cm) untuk uji kuat tarik lentur. Dari hasil penelitian didapatkan: (1) Kuat tekan maksimum terjadi pada penambahan serat kawat bendrat pada Vf 1% mengalami peningkatan sebesar 19,33% dari kuat tekan beton Vf0%., (2) Kuat tarik belah maksimum terjadi pada penambahan serat baja karbon 3D Dramix pada Vf 2% mengalami peningkatan sebesar 88,38% dari kuat tarik belah beton Vf0%., dan (3) Kuat tarik lentur maksimumterjadi pada penambahan serat baja karbon 3D Dramix pada Vf 2% mengalami peningkatan sebesar 465,63% dari kuat tarik lentur beton Vf0%.Kata kunci : serat baja karbon 3D Dramix, serat kawat bendrat, kuat tekan, kuat tarik belah, kuat tarik lentur.
Pemanfaatan Limbah Plastik Bekas Gelas Kemasan Untuk Meningkatkan Kekuatan Campuran Beton Sebagai Bahan Rigid Pavement Calosa, Evanthe; Putra, Sasana; Noorhidana, Vera Agustriana; Karami, Muhammad
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.v10i2.2636

Abstract

Concrete is the main material of rigid pavement that can withstand compressive strength and weak to tensile strength. Flexural tensile strength on rigid pavement itself is a benchmark in concrete pavement. To increase the value of the flexural tensile strength can be done by adding fiber to the concrete mixture. The purpose of this study was to determine the effect of the addition of plastic waste from plastic packaging made of polypropylene on the compressive strength and flexural tensile strength of concrete.In this study, the addition of used plastic waste pieces from packaged glass used fractional volumes of 0%, 0.1%, 0.3%, 0.5%, and 0.7% of the volume of concrete mixture. The samples for this study were a cylinder with a diameter of 15 cm and a height of 30 cm for the compressive strength test and a beam measuring 15 x 15 x 60 cm for the flexural tensile strength test. The test was carried out after the concrete had been 28 days old. The result of this research is the compressive strength decreased along with the amount escalation of the fiber to the concrete mixture. The flexural tensile strength maximum occur of the addition of plastic fibers at 2% volume fraction increased by 23,75% compared to flexural tensile strength of normal concrete. As a result of adding plastic fibers to the concrete mixture, it also decreased the workability of the concrete mixture
Studi Analisis Gedung Bertingkat dengan Perbandingan SNI-1726-2012 dan SNI-1726-2019 Terhadap Rasio Tulangan (Studi Kasus : Rumah Susun Pasar Jumat Jakarta Selatan) Halawa, Vince Nukrisman; Isneini, Mohd; Noorhidana, Vera Agustriana; Husni, Hasti Riakara
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.v10i3.2711

Abstract

The design of building structures in Indonesia must be designed with the applicable earthquake regulations so that the building is resistant to earthquake loads. Over the course of time, the earthquake regulations were updated considering the large earthquakes that occurred in Indonesia still caused a lot of damage to building structures. The purpose of this study was to determine the difference between the response of the structure and the design of the structure after the SNI regulations were updated. The building being analyzed is the Pasar Jumat apartment in South Jakarta. The method used is the response spectrum method. The building was analyzed using the ETABS program given earthquake loads based on SNI-1726-2012 and SNI-1726-2019. Based on the results of the analysis, the value of the fundamental natural vibration period is not too different, the value of interstory drift between levels is below the interstory drift between permission levels and the value of the basic shear force has increased by 19.69%. While in the design of the structure, there is an increase in the ratio of reinforcement in the main beam by 10.61% at the support and 10% in the field. for secondary beam, the reinforcement ratio increased by 8.43% at the support and 10.52% in the field. While the column structure has increased by 2.84%.
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.
Co-Authors Ageng Sadnowo Repelianto Andhini, Vania Meutia Andi Setiawan Anggraeni, Sylvia Dewi Cahyani Putri Agustin Calosa, Evanthe Dondi Kurniawan DWSBU, Chatarina Niken Eddy Purwanto Endro Prasetyo Wahono Fajriyanto Fajriyanto Fikri Alami Fikri Alami Gusti, Melinda Halawa, Vince Nukrisman Hasti Riakara Husni Hussein, Imam Isneini, Mohd Isneini, Muhammad karami, muhammad Laksmi Irianti Laksmi Irianti Irianti M.F. Shellyana Junaedi Masdar Helmi Mohd Isneini Mohd. Isneini Putra, Asyrofi Miranda Putra, Mayka Purnama Putri, Nur Mila Putri, Yoleta Tri Rahmanisa, Laila Indah Ratna Widyawati Riana, Netta Ristama, M Alvany Veschonanda Sahast, Corry Jayaputri Sasana Putra, Sasana Suma, Damas Novalda Suri, Yola Andara Pratami Surya Sebayang Ulini'am, Adipati Syahidullah Utami, Tri Ratna Yonanda, Prima Sandy