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REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development
Published by Universitas Tadulako
ISSN : 27233472     EISSN : 27461033     DOI : https://doi.org/10.22487/renstra
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Transportation
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development is a peer-reviewed journal published by the Civil Engineering Department, Engineering Faculty, Tadulako University. The journal is to publish research articles or original literature reviews covering all concentrations in the fields of Civil and Applied Engineering including Structural Engineering, Geotechnical Engineering, Water Resources Management, and Engineering, Transportation Engineering and Management, Construction Project Management, and other applied sciences related to the engineering field. Articles submitted for publication in the journal must have never been published by other media or journals and are free from plagiarism. It is a six-monthly journal, open-access and published in collaboration with the Indonesian Society for Geotechnical Engineering, Regional Commissariat of Central Sulawesi, and Indonesia Transportation Society, Central Sulawesi.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 106 Documents
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Analisis Durabilitas dan Penuaan Asbuton Pracampur dengan Variasi Lama Rendaman Katjo, S.; Isdyanto, A.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 1 (March 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i1.711

Abstract

Economic growth. Most of the existing road surface layers in Indonesia use Flexible Pavement. The fundamental problem in road construction is road damage before the planned age is reached, the factors that cause road damage can be caused by the influence of weather and water, causing asphalt aging and durability of road pavement to be damaged. The purpose of this study was to determine the Durability and Aging of Pracampur Asphalt Buton (ASBUTON) with Variations in Soaking Time by conducting experiments conducted in the laboratory through Marshall Test testing with reference to the general specifications of bina marga 2018. Short - Tern Aging (STOA) test specimens were made by heating the specimens in a loose state at 135oC for 4 hours before compaction, while Long- Tern Oven Aging (LTOA) test specimens were made by heating the specimens for 2 days at 85oC after the specimens were compacted. Durability parameters of AC-WC mixtures were observed from the residual strength index (IKS), first durability index (IDP) and second durability index (IDK). Based on the premixed asbestos mixture in the AC-WC layer, the optimum asphalt content (KAO) of 6.25% was obtained. The IKS of Normal, STOA, and LTOA specimens were 98.97%, 98.21%, and 97.69%, respectively. Furthermore, the IDP of Normal, STOA and LTOA specimens obtained r values of 0.7%, 0.11%, and 0.15%, respectively. While the IDK of Normal, STOA and LTOA test specimens obtained values of 1.53%, 2.64% and 3.41%, respectively, while the SA value of Normal, STOA and LTOA test specimens at 48 hours immersion is 98.47%, 97.36%, and 96.59%, respectively. After 48 hours of immersion at 60oC, it tends to decrease or lose strength for all test specimens and conditions.  The STOA test specimen at 48 hours of immersion experienced a significant decrease of 89.83% so that it did not meet the specifications specified in the 2018 Bina Marga Specification of 90%.
Studi Pengaruh Penambahan Abu Batu Sebagai Pengganti Pasir Pada Beton Mutu K-250 Listiawaty, H.; Namira, S.A.; Aryasin, M.; Muhajir, M.; Martani, S.W.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 1 (March 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i1.712

Abstract

The handling of stone ash waste from the by-product of the Quarry C crushed stone factory with the number of factories along the Palu-Donggala road has not been handled properly until now. The potential for utilization for building materials such as lightweight concrete, paving blocks and rosters as well as fillers for asphalt concrete mixtures and rigid pavements at airports is still large to be developed. Based on this, stone ash waste can be used as a building material to build structures and infrastructure. However, the characteristics of the basic materials and building materials made from stone ash waste must be re-tested. The analysis was carried out on the results of the concrete compressive strength test (SNI 03-1974-2011), which is a comparative analysis of various conditions of the age of the test object and the percentage of stone ash addition to the weight of fine aggregate obtained from the laboratory. The addition of stone ash as a partial replacement for fine aggregate can increase the compressive strength of concrete by up to 9.64% compared to the compressive strength of normal concrete. The optimum level of stone ash addition as a partial replacement for fine aggregate occurs at a variation of 20% stone ash from the weight of fine aggregate. The compressive strength of 28-day concrete that occurs in this variation is 23.590 MPa, while the compressive strength of concrete without the addition of stone ash is 21.515 MPa. The compressive strength value of concrete with 50% rock ash content has the lowest compressive strength value of 21.137 MPa, where there is a decrease in the compressive strength value of 1.75% compared to the compressive strength value of concrete without the addition of stone ash..
Pengaruh Pencampuran Serat Serabut Kelapa Pada Tanah Lempung Terhadap Nilai CBR dan Kuat Geser Damara, B.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 1 (March 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i1.713

Abstract

This research aims to investigate the influence of coconut fiber incorporation on clay soil in terms of its California Bearing Ratio (CBR) and shear strength. The study involved collecting clay samples from a specific location and blending them with varying percentages of coconut fibers. Laboratory experiments were carried out to assess the CBR and shear strength of both untreated clay and clay mixed with different fiber fractions. The laboratory results revealed an improvement in CBR from the original clay value of 5.59% to 6.1% with 0.2% fiber addition, 6.64% with 0.4%, and 7.34% with 0.6%. These results indicate a consistent increase without any decline. Additionally, the shear strength test showed a 0.2% improvement, with the optimal shear strength achieved at a 0.2% fiber composition, reaching 1.0588%. The inclusion of coconut fibers significantly enhanced the CBR of the clay. The study also identified the optimal fiber fraction required to maximize CBR improvement. Moreover, the addition of coconut fibers boosted the shear strength, making this method useful for civil engineering projects such as road stabilization, foundation reinforcement, and other construction activities in areas with clay soil. This study highlights the potential of coconut fibers as a cost-effective and sustainable reinforcement material for clay soil in civil construction, offering both economic and environmental benefits to the construction industry
Karakteristik Kuat Geser Tanah Dengan Tanpa Akar Vegetasi Pada Lereng Ruas Tawaeli -Toboli Martini, M.; Sutapa, I.W.; Ramadhani, S.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 1 (March 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i1.715

Abstract

The contribution of vegetation to slope stability is based on hydrological and mechanical aspects. The effect of vegetation on the hydrological aspect is to reduce soil water content through transpiration, interception and evapotranspiration. And the mechanical influence of vegetation is through strengthening the roots in the soil. Water absorption by vegetation varies depending on age and density, rainfall factors and soil type. Cohesion (c) and friction angle () are soil shear strength parameters. In soil that has vegetation roots, it will form a composite material, namely the root-soil model, there is an increase in cohesion value with the presence of roots, this is what is called apparent cohesion (c'R). Several parameters that are believed to influence the shear strength of the soil and roots will also be studied, namely the physical properties of the roots, namely diameter, type of root/vegetation, and water content. For mechanical properties, namely the tensile strength of the roots, the shear strength parameters of the soil both without and with roots, namely cohesion, apparent cohesion and internal friction angle. The type of vegetation reviewed in this research is elephant grass with fibrous roots. The results obtained indirectly by increasing the value of cohesion and angle of friction in the soil due to the presence of roots influence/increase the shear strength of the soil. The volume of roots in the soil greatly influences changes in the cohesion value or angle of friction of the soil. As the root volume decreases, the shear strength value decreases, the shear strength parameter also decreases. In this study, the change in soil shear strength values in sandy soil conditions, the increase in cohesion value was not as significant compared to the change in friction angle values.
Pengaruh Metode Pelaksanaan Terhadap Kinerja Waktu Proyek Rekonstruksi Jembatan di Kota Palu Fahirah, F.; Hilmansyah, T.; Salsabila, Z.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 1 (March 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i1.724

Abstract

The bridge reconstruction project is an effort to rebuild bridges that have been destroyed by the earthquake and tsunami that hit Palu City. The implementation of the bridge reconstruction project has complicated work that raises an analysis of the effect of the bridge project implementation method on project time performance. The purpose of this study was to determine the effect of implementation methods on the time performance of the bridge reconstruction project in Palu City. The sample of this study amounted to 22 workers on the bridge reconstruction project using Purposive Sampling method. The field collection process was carried out by collecting primary data in the form of interviews and distributing questionnaires. The data were processed using descriptive statistics and multiple linear regression analysis. The results of this study indicate that partially of the five variabels affecting the implementation method, the material factor variabel has a significant effect on the time performance of the bridge reconstruction project. While simultaneously work methods, labor, material factors, equipment, and project site conditions have an effect of 8,988 with a significant 0.000 on the variabel time performance of the bridge reconstruction project in Palu City.
Analisis Struktur Hotel Menggunakan Metode Direct Displacement Based Design Amir, F.; Sutrisno, M.; Agung, M.; Sakti, T.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 1 (March 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i1.732

Abstract

Palu City is one of the areas prone to earthquakes, as evidenced by the earthquake incident on September 28 2018, buildings in Palu city should be analyzed due to seismic loads and based on structural performance. One of the performance-based analysis methods is the direct displacement based design (DDBD) method. The direct displacement based design method is an seismic analysis method that makes the performance target as an initial reference for seismic load design. The design structure in this paper is a 12-storey hotel structure and located in Palu City, using a special moment resisting frame system, with the quality of the concrete material,  f'c = 35 MPa, reinforcement fy = 420 MPa for main reinforcement and 280 MPa for shear reinforcement. The seismic load generated from the DDBD for the X direction is 6986.61 kN and for the Y direction is 6132.91 kN. From the loads acting on the structure, it is found that the safe dimensions of the elements are using column dimensions 800/800, main beam 700/500, and the plate thickness is 140 mm.
Model Bangkitan Perjalanan Penduduk Hunian Tetap (Studi Kasus Hunian Tetap Tondo) Badwi, B.; Patunrangi, J.; Setiawan, A.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 2 (September 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i2.661

Abstract

The Tondo permanent residence is located in Tondo sub-district, Mantikulore sub-district, Palu city. This residence will have a traffic impact on the surrounding road network because the impact of development in the area where the residence is built will still be an increase in population, increase in income, increase in vehicle ownership and the construction of a number of public facilities which will generate traffic generation and attraction so that It is necessary to conduct research on socio-economic characteristics, movement characteristics and generation models. Data collection was carried out using primary data through a home interview survey. To produce a trip generation model in this study, multiple linear regression methods were used. The socio-economic characteristics of Tondo permanent residences are 37.66% of family members amounting to 3 people, 39.29% total income of Rp. 1,000,000 – Rp. 3,000,000, the number of 2-wheeled vehicle owners is 40.58% who owns 2 units, the number of 4-wheeled vehicle owners is 88.64% and does not own a car and the travel intensity is 41.23%, amounting to 5 trips, while the characteristics of population movement in Tondo permanent residences namely the address before the earthquake 45.13% came from West Palu District, the type of work 49.03% worked as self-employed, the purpose of the trip 62.66% was to work, the education level of 79.22% was high school and the destination of the trip was 24.03% Head to Mantikulore District. The trip generation model is Y = 2.8642 + 0.9452 X3
Analisis Transpor Sedimen Dasar Sungai Alopohu yang Bermuara di Danau Limboto Asri, A.A.O.; Husnan, R.; Utama, K.A.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 2 (September 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i2.708

Abstract

One of the causes of flooding in Gorontalo is the reduced capacity of Lake Limboto, which has served as a natural water reservoir and flood preventer, to perform these functions effectively due to siltation. This diminished capacity is attributable to the deposition of sedimentary material carried by the rivers that drain into Lake Limboto. A total of 23 rivers discharge into Lake Limboto, contributing sedimentation on an annual basis. Among these, the Alopohu River is one of the most significant contributors. The objective of this study was to quantify the sediment transport generated by the Alopohu River. The analysis was conducted through the collection of direct measurement observation data in the downstream region of the Alopohu River, with the objective of obtaining data on river geometry, flow velocity, instantaneous discharge, and bottom sediment samples. Laboratory tests were conducted on basic sediment samples in order to ascertain the characteristics of the sediment grains. The data were subsequently analyzed using empirical formulas, namely the Meyer-Peter and Muller, Einstein, and Frijlink formulas. The quantity of bed sediment transport (bed load) in the downstream Alopohu River, as determined by discharge measurements and the application of the Meyer-Peter and Muller formula, is 2.86 tons per year. The Einstein formula yields a value of 621 tons per year, while the Frijlink formula produces a result of 54.67 tons per year. The discrepancy in the calculated values for each empirical formula is attributed to the specific parameters utilized in each formula
Pengaruh Menghilangkan Dinding Geser Terhadap Perilaku Stuktur Gedung 11 Lantai dengan Denah L-Shaped Dhanarsari, R.A.N.; Indra, S.; Manaha, Y.P.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 2 (September 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i2.716

Abstract

Malang Regency is an area prone to tectonic earthquakes, so the planning of multi-story buildings, especially those with an asymmetric L-shaped plan, needs to consider the optimization of earthquake-resistant structures. Shear walls are commonly used to increase structural stiffness, but they can introduce complexities in planning and construction. This study aims to evaluate the effect of removing shear walls on the structural behavior of the Samaview Residence Building, an 11-story building with an L-shaped plan in Malang Regency. Structural analysis was carried out with the help of the ETABS 18 program using building technical data, material data, and building design drawings obtained from the implementer and literature studies. The analysis includes determining the dimensions of structural elements based on SNI 2847:2019, calculating gravity and earthquake loads according to SNI 1727:2020 and SNI 1726:2019, as well as evaluating inter-story drift, structural irregularities, and P-Delta effects. The analysis results show that the removal of the shear wall still results in structural element dimensions that meet the requirements of SNI 2847:2019. Structural drift and P-Delta effects also meet the requirements of SNI 1726:2019, although there are inside corner irregularities that need to be considered in the design. It can be concluded that removing the shear walls in the Samaview Residence Building does not affect the ability of the structure to withstand gravity and earthquake loads. However, special attention needs to be paid to the inner corner irregularities, drift, and P-Delta effects to ensure the effectiveness of the earthquake-resistant structural system
Pengaruh Penambahan Dinding Geser Terhadap Perilaku Struktur pada Gedung Bertingkat 10 Lantai di Kota Malang Bara, R.; Priskasari, E.; Manaha, Y.P.
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 6 Issue 2 (September 2025)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v6i2.729

Abstract

Building planning with earthquake-resistant structures is carried out to reduce the risk of loss and loss of life during earthquakes, especially in areas with high earthquake risk. This planning aims to evaluate the effect of adding shear walls on the structural behavior of a 10-story building in Malang City. Shear walls are generally used to increase structural stiffness and strengthen the structural system in resisting earthquake forces. With the addition of shear walls, better control of inter-story deviations where the value is significantly reduced compared to being designed as a single system. Shear walls or moment-resisting frames must be able to withstand at least 25% of the design earthquake force. Structural analysis is carried out with the ETABS 19 civil engineering assistance program using building technical data, material data, and building design drawings. The analysis includes determining dimensions based on SNI 2847: 2019 and loading and structural control based on SNI 1726: 2019. The results of the structural analysis show that with the addition of shear walls, the structural elements used are more effective and do not reduce the structure's ability to withstand earthquake loads or gravity loads. The planned shear wall has been able to accept more than 50% of the existing earthquake force, this result has met the minimum requirements for the load carried by the shear wall. The resulting drift also does not exceed the permissible drift, although there is a fairly large difference in the drift value. However, the determination of the location of the shear wall must still be adjusted to the needs and adjust the design of the planned building

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