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Jurnal Manajemen Teknologi dan Teknik Sipil (JURMATEKS)
Published by Universitas Kadiri
ISSN : -     EISSN : 26217686     DOI : http://dx.doi.org/10.30737/jurmateks
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Transportation
JURMATEKS (Jurnal Mahasiswa Teknik Sipil) diterbitkan oleh Program Studi Teknik Sipil, Fakultas Teknik, Universitas KADIRI untuk menampung hasil penelitian, tugas akhir maupun tugas proyek mahasiswa teknik sipil di lingkungan Universitas KADIRI.
Arjuna Subject : Teknik (semua kategori) - Bangunan dan Konstruksi
Articles 6 Documents
 1 
Search results for , issue "Vol. 6 No. 1 (2023): JUNE" : 6 Documents clear
Limbah Cangkang Telur Sebagai Inovasi Material Pengganti Agregat Halus Beton Bunyamin; Heru Pramanda; Nesri Hendrifa; Afdhal
Jurnal Manajemen Teknologi & Teknik Sipil Vol. 6 No. 1 (2023): JUNE
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jurmateks.v6i1.4583

Abstract

Eggshells become a huge waste and cause various environmental problems. One of the efforts that can be made to reduce this waste is to use it as a material in concrete. Cement and fine aggregate raw materials that are continuously used will eventually run out and are difficult to renew. This study aims to determine the slump value and compressive strength using eggshell waste as a substitute for cement and fine aggregate in concrete. Eggshells as a substitute for cement were in the oven at 105°C for 24 hours and then fired and the material that passed the No. sieve was taken. 200 (75 µm) and sieve number 4 for fine aggregate. The percentage of mixed eggshell content used was 0%, 5%, 10%, and 15%. The results showed that the slump and compressive strength decreased with increasing eggshell content in the concrete. This is caused by the size of the eggshell. The use of egg shells with a size of 4.75 mm as a substitute for fine aggregate is not recommended for concrete. The irregular shape of the eggshell is considered less capable of filling cavities and even causing cavities in concrete. The right size for using egg shells is in the range of 0.5 – 1 mm. Referring to these results, this study highlights the importance of choosing eggshell size as a substitute for fine aggregate. So that with proper utilization, egg shells can be utilized as a material substitute and improve the quality of concrete.
Pelindung Dinding Terhadap Hujan Asam Menggunakan Geopolimer Berbasis Nanosilika dan Cellulose Nanocrystals Cut Rahmawati
Jurnal Manajemen Teknologi & Teknik Sipil Vol. 6 No. 1 (2023): JUNE
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jurmateks.v6i1.4625

Abstract

Geopolymers have a weakness in durability against exposure to acid rain. Nano-silica and Cellulose Nanocrystals (CNCs) can be incorporated to enhance the acid rain resistance of geopolymers. This study aims to investigate the durability of geopolymer-based nano-silica and CNCs against exposure to acid rain. This study employed a rain simulation infiltration method. The concentrations of nano-silica and CNCs used were 4% and 1%, respectively. The compressive strength of the geopolymer specimens was tested before and after exposure to assess the effects of acid rain. Additionally, SEM and XRD tests were conducted to analyze microstructural changes. The results revealed a significant reduction in the compressive strength of the geopolymer without nano silica and CNCs (36.14% and 26.73% at pH 4 and 5, respectively). In contrast, the geopolymer paste containing nano-silica and CNCs exhibited lower reductions of 22.93% and 19.77% at pH 4 and 5, respectively. These findings indicate that the addition of nano-silica and CNCs contributes to the preservation of compressive strength. The observed effect is attributed to the ability of nano-silica and CNCs to impede acid attack on the geopolymer paste, thereby preventing the degradation of calcium levels present in the fly ash within the geopolymer. The strength degradation of the geopolymer paste resulted from the breakdown of Al–O, Si–O, and calcium bonds within the system, triggered by the reaction with H2SO4 from the acid rain. Nano-silica and CNCs-based geopolymers exhibit positive effects and can be utilized as a coating on the walls of buildings.
Optimasi Ukuran Penampang pada Struktur Rangka Batang Ruang dengan Binary Dragonfly Algorithm Richard Frans; Stevy Thioritz
Jurnal Manajemen Teknologi & Teknik Sipil Vol. 6 No. 1 (2023): JUNE
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jurmateks.v6i1.4709

Abstract

The cross-section area of a structural element plays a vital role in designing and planning processes. Each structural element must meet design criteria while maintaining an effective cross-sectional area, ensuring the structure is economical and lightweight. This Economic aspect refers to the structure's cost and weight, minimizing any lateral effects that may arise. This research aimed to determine the optimum cross-sectional for bamboo elements, with the objective of minimizing the weight of the space truss structure but still meets the design criteria. Four different cross-sectional areas of bamboo were used, 4272,566 mm2, 3382,71 mm2, 3084,259 mm2, and 2827,433 mm2. The optimization algorithm used is the binary dragonfly algorithm. There are two configurations of space truss structures considered, the first space truss structure is 25 members, and the second space truss is 32 members (pyramid module). The program was run four times to ensure the convergence and consistency of the results obtained. The results show that the weight of the first space truss structure is 86.98 kg while the weight of the second space truss structure is 64.6015 kg. The results can be considered optimal as the critical element's actual stress is close to the allowable stress. Therefore, the binary dragonfly algorithm can be an alternative method to optimize the cross-sectional area of structural element especially for space truss structure.
Mengatasi Genangan Jalan Donowati Kota Surabaya Melalui Perbaikan Drainase Jenny Caroline; Arintha Indah Dwi Syafiarti
Jurnal Manajemen Teknologi & Teknik Sipil Vol. 6 No. 1 (2023): JUNE
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jurmateks.v6i1.4713

Abstract

Surabaya plays a crucial role as the economic center in eastern Indonesia. However, it is identified as a waterlogging-prone area. Several regions have experienced flooding with water heights ranging from 10 to 70 cm, lasting up to 6 hours. This issue also happened in the Donowati area, Surabaya where mismatches in the construction of urban drainage channels with design criteria were found, resulting in inundation. These inundations cause infrastructure damage, health risks, disruption of activities, and economic losses. This research aims to evaluate and optimize the drainage system in Jalan Donowati, Surabaya. The research was conducted by collecting existing canal dimension data and hydrological data. Furthermore, data analysis was carried out, including hydrological and hydraulics analysis. Repairs will be carried out if an overflow occurs so the channel can run normally. The results showed drainage channels on Jalan Donowati could not accommodate rainwater due to their small capacity, namely one secondary and three tertiary channels. The channel redesign obtained dimensions of 1 m x 1 m for the secondary channel and 0.7 m x 0.6 m for the tertiary channel. The validation results show that the new dimension is safe against high rainfall. In addition to channel re-dimensions, inlet additions were also made to allow rainwater to enter the drainage canals more efficiently. So that with this new dimension, it can prevent inundation that occurs during the rainy season.
Akurasi Perhitungan 3D Volume Galian Proyek Pembangunan Jalan Tepus-Jerukwudel II Menggunakan GIS Dafa Prabaswara Wahyudi; Agus Riyanto
Jurnal Manajemen Teknologi & Teknik Sipil Vol. 6 No. 1 (2023): JUNE
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jurmateks.v6i1.4734

Abstract

Calculation of excavation volume is one of the important activities in earthworks. Volume calculations are still done manually for some projects using Microsoft Office Excel. These calculations are time-consuming and prone to errors. The use of DTM-based 3D models in calculating excavation volume is an important thing that needs to be done for work efficiency. This study aims to determine the accuracy of the 3D-based Digital Terrain Method (DTM) in calculating excavation volume. The data used comes from a topographic survey of 64 points. Volume calculations were performed using the 2D Average End Area and 3D DTM-based methods (TIN and Kriging) using ArcGIS. The calculation results will be compared with the actual data from the project excavation volume report. The results show that the 3D volume calculation has fairly good accuracy compared to the traditional average end area method, with a difference of 1.01%. TIN can represent the results of the calculation of the excavation volume, which is quite good, with a difference of 1.33% to the actual volume and RMSE 107.49 m3. This is because the land surface under review is a mountainous area, where the formed surface tends to be uneven, and elevation changes sharply. This is in accordance with the characteristics of the DTM formed by TIN. So the selection of the most appropriate surface modeling method in mountainous areas is TIN. Using the TIN method can minimize the difference in volume calculations and increase the accuracy of soil volume calculations.
Meningkatkan Stabilitas Lereng Berdasarkan Pengujian Karakteristik Tanah Mahendra Septa Kuswiantoro; Agata Iwan Candra; Rifqi Sahrul Nurhuda; Abdi Aziz Nurrahman; Ilham Fanani; Muhammad Najmuddin Alkamal
Jurnal Manajemen Teknologi & Teknik Sipil Vol. 6 No. 1 (2023): JUNE
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jurmateks.v6i1.4763

Abstract

Kediri Regency has diverse potential and wealth, including natural resources, culture, and tourism. One example is the Dolo waterfall located in Jugo Village. In January 2023 there was an avalanche caused by heavy rainfall in the mountainous area of Jugo Village, Mojo District, Kediri. The landslide disrupted road access to tourist attractions, infrastructure and also affected the economy. Several studies have revealed that soil type, shear strength, and soil consistency properties are important in influencing a slope’s stability level. However, the discussion of landslide prevention efforts regarding soil and slope characteristics is still limited. This study aims to determine soil type, consistency properties, shear angle, soil cohesion, and slope safety factors in Jugo Village, Mojo District, Kediri Regency. Research begins with a survey and sampling, then testing is carried out in the laboratory and calculated the slope safety factor (Fs). The results revealed that the characteristics of the soil in Jugo Village influenced the landslides that occurred. Both the type of soil, the consistency limit, and the shear strength of the soil indicate that the slope is unstable, this is also indicated by the calculation value of Fs <1. The results of this study can be used as a reference in planning and carrying out slope stability at that location so as to prevent landslides in the future. The effort that can be done is to change the slope to 35° so that the slope becomes stable.

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