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Perbandingan Biaya dan Waktu Pelaksanaan Pekerjaan Pelat Lantai Metode Precast Half Slab, Full Slab dan Konvensional Artiani, Gita Puspa; Indriasari; Dwi Lestari
Jurnal Sipil Krisna Vol 9 No 2 (2023): Jurnal Sipil Krisna
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v9i2.416

Abstract

Construction development in Indonesia continues to progress from year to year. One of the most expensive construction jobs is concrete floor slab work. This forces contractors to choose methods that save more costs and time. Therefore, this research aims to compare 3 methods, namely precast half slab, full slab and conventional methods which are quantitatively carried out by collecting data on project drawings, RAB and project schedule, then analyzed to get the total cost, time and volume of floor slab work. in each method using the Microsoft Excel 2021 program so that calculation results are obtained in terms of costs that are more effective and efficient by applying the precast half slab method for multi-storey building work scales. Where the precast half slab method requires a total cost of Rp. 4,159,526,137, the full slab method requires a total cost of Rp. 4,885,501,898 while the conventional method requires a total cost of Rp. 4,605,483,760. In terms of time, the full slab method is more effective with a total of 105 days of work, while half slab requires 150 days and conventional requires 210 days
Analisis Penggunaan Limbah Gypsum Sebagai Filler Terhadap Kuat Tekan Beton Martua Sihombing, Sahat; Indriasari; Riyan Prasetyo
Jurnal Sipil Krisna Vol 9 No 2 (2023): Jurnal Sipil Krisna
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v9i2.422

Abstract

Infrastructure development spurred innovation in the field of structural engineering, particularly in the field of construction materials technology. The development of concrete technology in trials of adding mixed ingredients continues to be carried out to obtain the desired strength and quality of concrete. The characteristics of concrete are greatly influenced by the ingredients contained in the mixture and how it is processed. The purpose of this study was to analyze the normal compressive strength of concrete and the compressive strength of concrete using gypsum waste as a filler with variations of 10% and 20% with curing ages observed at 28 days. The method used in this study is an experimental method or experiments in the Concrete Laboratory. Based on the results of the study, the normal compressive strength values of fc'18 (MPa) at ages 28 days were 18.08 MPa. In mixed variations of concrete with gypsum waste as a 10% filler, the compressive strength values at the ages of 28 days were 19.18 MPa. In mixed variations of concrete with 20% gypsum waste as filler, the compressive strength values at 28 days of age were 19.71 MPa. From the results of the research conducted, it can be concluded that the use of gypsum waste from the rest of the construction has an effect on increasing the compressive strength of concrete.
Terapi Pengganti Ginjal pada Sepsis disertai dengan Status Hiperosmolar Hiperglikemia dan Cedera Ginjal Akut Mutiara, Gunawan; Indriasari
Jurnal Komplikasi Anestesi Vol 8 No 1 (2021): Volume 8 Number 1 (2021)
Publisher : This journal is published by the Department of Anesthesiology and Intensive Therapy of Faculty of Medicine, Public Health and Nursing, in collaboration with the Indonesian Society of Anesthesiology and Intensive Therapy , Yogyakarta Special Region Br

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jka.v8i1.7491

Abstract

Acute kidney injury was a complication recently occurred in critical ill patients of ICU. A 64-years-old man came to emergency department with chief complain of lump originated at colli dextra accompanying with diffcult of breathing symptom. Patient was diagnosed with septic shock due to deep neck abcess complicated with AKI and uremic encephalopathy, diabetes mellitus type 2 with hyperosmolar hyperglycemia state. Patient was treated to manage dehydration, high blood glucose, and source control of infection, then patients was transferred to ICU with support of mechanical ventilator. The major problem of this patient were decrease of consciousness and diffculty in treating AKI stage because there were increase in serum ureum and creatinine level even though urine production was excessive. Patients condition was improved and could be extubated after performing renal replacement therapy on the sixth day. On patient with sepsis and AKI, renal replacement therapy was one of the modalities considered to support management in critically ill patients in ICU.
HUBUNGAN SENAM PROLANIS TERHADAP PENURUNAN KADAR GULA DARAH SEWAKTU PADA PASIEN DIABETES MELLITUS TIPE 2 DI PUSKESMAS SEI LEKOP Indriasari; Elvita Nora Susana; Muthiah Ramadhani
Zona Kedokteran: Program Studi Pendidikan Dokter Universitas Batam Vol 14 No 2 (2024): Zona Kedokteran: Program Studi Pendidikan Dokter Universitas Batam
Publisher : Universitas Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37776/zked.v14i2.1531

Abstract

Background : Type 2 diabetes mellitus is a chronic metabolic disease characterized by elevated blood glucose levels in the body due to insulin resistance or inadequate insulin production. The purpose of this study is to investigatethe relationship between physical activity and blood sugar levels in patients with type 2 Diabetes Mellitus who participated in the PROLANIS program at the Sei Lekop Community Health Center in 2023. Methods : This study is an observational research with an analytical cohort design. Data collection was obtained from the medical records of patients with type 2 diabetes mellitus who are registered under BPJS. The data analysis methods include univariate analysis and bivariate analysis, with a standard error of estimate set at 5% or 0.05 Results : The results of the Wilcoxon test showed that PROLANIS exercise had a relationship with reducing blood sugar levels during type 2 diabetes mellitus patients at the Sei Lekop Community Health Center in 2023. The results of the Wilcoxon test were p = 0.001. Conclusion : Based on the results of this study, it can be concluded that there is a relationship between PROLANIS exercise and random blood sugar levels in patients with type 2 diabetes mellitus at Sei Lekop Health Center in 2023 Keywords : Diabetes Mellitus, Blood Glucose Levels, and PROLANIS Exercise.
Analisis Daya Dukung Pondasi Tiang Pancang Berdasarkan Data Sondir Pada Proyek Pembangunan Boarding School Situmorang, Hendrik Kristian; Darmiyanti, Lydia; Indriasari
Jurnal Anggapa Vol 3 No 2 (2024): ANGGAPA Volume 3 No 2 November 2024
Publisher : Faculty of Engineering, Widya Kartika University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61293/anggapa.v3i2.739

Abstract

Pondasi merupakan hal yang sangat penting pada saat pekerjaan teknik sipil, dalam hal struktur suatu bangunan. Bentuk dan struktur tanah juga berperan dalam menentukan jenis pondasi dalam pekerjaan kontruksi, karena kondisi struktur tanah itu sendiri tidak menentu. Sebelum pembangunan dimulai, pekerjaan pondasi (struktur bawah) terlebih dahulu harus dilakukan dan dilaksanakan di lokasi. Dalam satuan bangunan utuh, pondasi adalah suatu struktur yang menopang/menahan beban bangunan sekaligus menopang bangunan diatasnya dan menyalurkan beban kebawah tanah. Tujuan penulisan ini adalah Menganalisis nilai daya dukung pondasi tiang pancang tunggal berdasarkan data Cone Penetration Test (CPT) pada proyek perencanaan pembangunan Synergy Islamic Boarding School dan menganalisis penurunan tiang tunggal secara manual serta menganalisis penurunan menggunakan sofware plaxis 2D. Perhitungan daya dukung menggunakan metode Mayerhof dan perhitugan penurunan tiang tunggal menggunakan metode Poulus-Davis dan aplikasi plaxis 2D foundation. Hasil perhitungan kapasitas daya dukung tiang pancang tunggal pada titik DB.2 menggunakan metode Mayerhof sebesar 14,57 Ton. Kapasitas daya dukung tiang pancang tunggal dengan data Boring Log pada titik DB.2 menggunakan metode Mayerhof sebesar 48,03 Ton. Hasil perhitungan penurunan tiang tunggal dengan metode Poulus-Davis sebesar 0,88 cm dan hasil perhitungan aplikasih plaxis 2D sebesar 1,4 cm sehingga terdapat perbedaan hasil sebesar 0,52 cm.
THE USE OF WASTE BAMBOO PIECES AS A PARTIAL SUBSTITUTION OF COARSE AGGREGATES TO INCREASE THE COMPRESSIVE STRENGTH OF CONCRETE MUHAMMAD ARDIYAN DENYADI; LYDIA DARMIYANTI; INDRIASARI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 5 No. 01 (2025): INTERNATIONAL JOURNAL OF MULTISCIENCE - JANUARY-APRIL 2025
Publisher : CV KULTURA DIGITAL MEDIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Utilizing waste as an alternative building material is becoming an effective solution to environmental problems and is popular in developing countries. On the other hand, the concrete industry, a key component of construction, continues to innovate to improve quality and efficiency. The increasing demand for concrete is driving the development of mix designs that meet stringent quality and compressive strength standards, while taking into account environmental sustainability. Advances in concrete technology spur research initiatives to improve its quality and efficiency of use, with innovations in material selection and execution methodologies. This is aimed at meeting the increasing needs and overcoming construction challenges. Modern concrete is required to perform optimally in less time, requiring effective additives for performance enhancement. Recent research has integrated bamboo waste from the handicraft industry as a component of concrete mixes, increasing the speed of project execution and providing a sustainable solution in waste management. The authors were interested in conducting an in-depth study on improving the compressive strength of concrete by integrating waste bamboo pieces. The concrete studied had a f´c strength of 25 MPa (K-300) and was tested at 7, 14, and 28 days to assess the effectiveness of bamboo as an additive. The test results are expected to provide significant data on the viability of bamboo waste as a partial substitution for coarse aggregate. The title of the study, “Use of Waste Bamboo Pieces as Partial Substitution for Coarse Aggregate to Increase the Compressive Strength of Concrete,” reflects the objectives of the study and the utilization of sustainable materials in modern construction. Based on the results of the research that has been carried out and the discussion in the previous chapter with the variation of waste bamboo pieces 0%, 10% and 15%, the following conclusions can be drawn: the results of testing the compressive strength of normal concrete at the age of 28 days reached 452 kN (fʹc 26, 1 MPa = 104%), while variation 1 of 10% rolled bamboo cuttings waste decreased in compressive strength, reaching 305 kN (fʹc 17.60 MPa = 70%), and variation 2 of 15% rolled bamboo cuttings waste decreased, reaching 309 kN (fʹc 17.83 MPa = 71%).
COMPRESSIVE STRENGTH ANALYSIS OF CONCRETE USING ASPHALT SCRAP WASTE MUHAMMAD RIFA'I; YONAS PRIMA ARGA RUMBYARSO; INDRIASARI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 5 No. 01 (2025): INTERNATIONAL JOURNAL OF MULTISCIENCE - JANUARY-APRIL 2025
Publisher : CV KULTURA DIGITAL MEDIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Concrete is one of the most commonly used building materials in civil construction and is widely used by various groups. Currently, the rapid growth of the global economy has led to various upgrades of concrete building construction systems in various places, resulting in an increase in concrete production. With the development of technology in concrete, more and more ideas and innovations are used to improve the quality of concrete, one of the innovations is by adding additional or substitute materials to concrete. One of the substitute materials that can be used is asphalt scrap waste. This study aims to determine the compressive strength of concrete by utilizing asphalt scrap waste as a partial substitute for coarse aggregate. This research was conducted by comparing the effect of using scrap asphalt waste on the compressive strength of normal concrete. This research method is by conducting experiments or experiments in the concrete laboratory. This research refers to SNI-03-2834-2000, about Procedure for Making Normal Concrete Plan. Based on the research results, it can be concluded that the average normal concrete compressive strength value is 25.57 MPa, so it meets the planned concrete compressive strength of 25 MPa. The average concrete compressive strength of 5% scrap asphalt waste variation is 24.88 MPa, the average concrete compressive strength of 10% scrap asphalt waste variation is 23.86 MPa. Based on these results, that the greater the use of scrap asphalt waste, the compressive strength of concrete decreases.
An Enhanced Nickel Recovery from Mixed Hydroxide Precipitate Through Selective Leaching with KMnO4 Oxidant Gumelar, Muhammad Dikdik; Rahayu; Saputra; Agustanhakri; Husin; Andrameda; Taqwatomo; Putra; Indrijarso; Saudi; Indriasari; Arfiana; Yuliani; Mumtaz; Mirahati
Jurnal Sains Materi Indonesia Vol. 26 No. 1 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2024.3136

Abstract

Mixed Hydroxide Precipitate (MHP), a metal precipitate with the dominant nickel and cobalt content in hydroxide compounds, can be leached as a lithium battery precursor. In this study, KMnO4 was used as an oxidant agent to increase the solubility of Ni and Co. The variation of the sulfuric acid concentration (0.5 - 1.5 M) as a leachate reagent, the concentration of KMnO4 (2.5 - 7.5 g/L), and the selective leaching temperature (60 - 80°C) were investigated. Solvent extraction using CYANEX 272 and D2EHPA was performed to separate the Ni, Co, and Mn. Atomic Absorption Spectrometry (AAS), Inductively coupled plasma mass (ICP-OES), and X-ray Fluorescence (XRF) were used to analyze the chemical compositions. At the same time, crystallographic analysis was observed with X-Ray Diffraction. It was observed that potassium permanganate increased the dissolution of Ni and Co to 91.3% and 85.4% but decreased the dissolution of Mn (37.53%) under the following conditions: 1.75 M sulfuric acid, 7.5 g/L potassium permanganate, and 60°C temperature. High purity of nickel crystal (99.64%) was observed with spontaneous nucleation due to the supersaturated nickel solution after solvent extraction with CYANEX 272. Thus, using permanganate ion as selective leaching of Ni and Co from Mn is promising.
Pengaruh Penerapan Sistem Manajemen Mutu (ISO 9001:2015) terhadap keterlambatan Proyek (Studi kasus: Proyek Apartemen B Residence Grogol Jakarta Barat) Asy’ari, Gilang Maulana; Darmiyanti, Lydia; Indriasari
Jurnal Anggapa Vol 4 No 1 (2025): ANGGAPA Volume 3 No 1 April 2025
Publisher : Faculty of Engineering, Widya Kartika University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61293/anggapa.v4i1.827

Abstract

Dalam pembangunan proyek konstruksi banyak hal yang dapat merugikan perusahaan, contohnya ialah bobot dari sumber daya manusia tidak rata. Peningkatan kualitas SDM bisa diterapkan memakai bermacam metode. Contoh dari metode yang efisien ialah dengan menerapkan suatu system atau aturan yang telah di standardkan, yaitu ISO 9001-2015. Penelitian ini bertujuan dapat mengetahui peringkat pengaplikasian, kendala juga solusi peningkatan dalam menerapkan sistem manajemen mutu dengan ISO 9001:2015. Metode Penelitian kualitatif dengan memberikan kuesioner pada responden yang berkaitan langsung pada sasaran Penelitian. Dan hasil Penelitian menyatakan penerapan dengan ISO 9001:2015 pada implementasi sebuah proyek Apartement B Residence Grogol Jakarta Barat Cukup Baik. Kendala yang dihadapi di lapangan dalam adalah keterlambatan kesediaan material atau schedule material, dan juga human error teknis sehingga hasil pengecoran yang tidak maksimal dan harus di bobok ulang, kualitas ready mix juga menjadi kendala terlambatnya proyek ini dan harus dibobok ulang. Solusi untuk meningkatkan penerapan sistem manajemen mutu yaitu dengan lebih selektif dalam memilih pekerja, memberi pelatihan atau arahan kepada seluruh pekerja yang ada dilapangan, manajemen atas harus lebih sering ke lapangan , evaluasi secara periodik dan memberi sosialisasi pemahaman sistem manajemen mutu ke seluruh pekerja sehingga memiliki kompetensi yang baik terhadap sistem manajemen mutu, dan lebih di schedule lagi untuk kesediaan material, dan harus di cek lagi untuk kualitas beton hingga volume beton sesuai dengan apa yang diinginkan.
ANALYSIS OF THE USE OF ZEOLITE AS A SUBSTITUTE FOR SOME OF THE COARSE AGGREGATE IN POROUS CONCRETE TEGUH SIANTURI; LYDIA DARMIYANTI; INDRIASARI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 5 No. 03 (2025): INTERNATIONAL JOURNAL OF MULTISCIENCE - EDITION SEPTEMBER - DECEMBER 2025
Publisher : CV KULTURA DIGITAL MEDIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rapid urban development increases water runoff due to impervious areas. Porous concrete is an environmentally friendly solution because it absorbs water and preserves groundwater. This study examines the use of porous zeolite as a partial substitute for coarse aggregate to improve the mechanical and environmental performance of porous concrete, particularly in areas with light traffic and sustainable water management requirements. The compressive strength of concrete with 0% zeolite stone composition reached 18.66 MPa (7 days), 22.60 MPa (14 days), and 25.60 MPa (28 days), exceeding all SNI 2847:2019 requirements. The compressive strength of concrete with 15% zeolite stone reached 16.06 MPa (7 days), 20.82 MPa (14 days), and 22.18 MPa (28 days), but none of them met the minimum limit of SNI 2847:2019. The compressive strength of concrete with 30% zeolite aggregate reached 16.07 MPa (7 days), 20.83 MPa (14 days), and 22.20 MPa (28 days), but none of them met the minimum standard of SNI 2847:2019.
Co-Authors Achmad Pahrul Rodji Agustanhakri Andrameda Ardiansyah Arfiana Army Zaka Anwary, Army Zaka Asy’ari, Gilang Maulana CHANDRA PURNOMO ADJIE Darmiyanti, Lydia DEDY RAMADHAN Dwi Lestari Elvita Nora Susana Ezra Oktaliansah FAJAR RIVANI Ferianto Gali Pribadi Gita Puspa Artiani Gita Puspa Artiani, Gita Puspa Gumelar, Muhammad Dikdik Gunawan Mutiara, Gunawan Husin Indrijarso Lamser Rajagukguk Lydia Darmiyanti M RIFQI BADRIANSYAH Mardiaman Martua Sihombing, Sahat Mirahati MUHAMMAD ARDIYAN DENYADI Muhammad Rifa'i Mumtaz Muthiah Ramadhani Putra Rahayu Riyan Prasetyo RIZKI HERWANSYAH Sahat Martua Sihombing Saputra Saudi Situmorang, Hendrik Kristian Susilo Yulianto, Susilo Taqwatomo TEGUH SIANTURI Yonas Prima Arga Rumbyarso YULIANI