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Fondasi: Jurnal Teknik Sipil
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 23024976     EISSN : 25031511     DOI : http://dx.doi.org/10.36055/jft.v9i1.7440
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Transportation
Terbitan berkala yang mempublikasikan hasil penelitian yang berkaitan dengan pengembangan sains dan teknologi dalam bidang teknik sipil (Struktur, Transportasi, Geoteknik, Sumber Daya Air dan Manajemen Konstruksi) sebagai bentuk kekayaan intelektual. Diterbitkan sebanyak 2 kali dalam satu tahun yakni pada Bulan April dan Oktober.
Arjuna Subject : -
Articles 303 Documents
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Experimental Study Comparative Compressive Strength and Tensile Strength of Nail Fiber Concrete Against Fiber Concrete Wiraningrum, Widya; Baehaki, Baehaki; Darwis, Zulmahdi
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.22040

Abstract

Concrete has high compressive strength but weak tensile strength. The innovations to increase tensile strength is addition fiber. Fiber concrete has been proven increase the tensile strength, but the basic material from flammable plastic and difficult to find in Indonesia, making polypropylene fibers less desirable, so an innovation was to add nails to concrete mix as substitute for polypropylene fibers. Nails made of steel, non-flammable, higher melting point than polypropylene, high tensile strength and easy to find in Indonesia. The purpose of this study was to determine the effect of adding nail and polypropylene fiber to the compressive and split tensile strength of concrete, and to determine the optimum proportion of nail fiber to polypropylene fiber concrete. Mix design using SNI 7656:2012. Based on the results, the compressive strength of normal concrete was 20,007 MPa and 1% polypropylene concrete was 20,097 MPa. The compressive strength of nail fiber concrete varies 0,5%, 1%, 1,5%, 2% and 2,5%, respectively, 16,334 MPa, 18,790 MPa, 21,290 MPa, 21,324 MPa, 19,242 MPa. The split tensile strength of normal concrete is 1,834 MPa and 1% polypropylene concrete is 2,361 MPa. The split tensile strength of nail fiber concrete varies 0,5%, 1%, 1,5%, 2% and 2,5%, respectively, 1,620 MPa, 1,990 MPa, 1,942 MPa, 1,800 MPa, and 1,730 MPa. The optimum proportion of nail fiber concrete as substitute for 1% polypropylene fiber concrete is variation of 1,5% with compressive strength of 21,290 MPa and split tensile strength of 1,942 MPa.
Marshall Characteristics of Asphalt Concrete – Wearing Course (AC-WC) With Substitution of Silica Sand as Fine Aggregate Mukhlis Mukhlis; Lusyana Lusyana; Enita Suardi; Denisa Rahma Sukri; Alyza Sazama
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.21917

Abstract

The growth of traffic loads in Indonesia has increased significantly, but road infrastructure has developed disproportionately. Excessive loads can damage roads because they exceed the planned capacity. Aggregates, especially fine aggregates, play an important role in inclined flexible pavement layers, namely in AC-WC layers. AC-WC aims to provide smoothness, safety and comfort for road users, as well as protect the underlying layers from damage due to traffic loads such as collapse, grooves and bleeding. The use of silica sand is an alternative used to improve the quality of AC-WC layers. This research aims to obtain the Optimum Asphalt Content (KAO) value. The KAO value using the Marshall method on the AC-WC mixture was 5.99% for 0% silica sand, 5.88% for 25% silica sand, 5.845% for 50% silica sand, 5.835% for 75% silica sand, 5.810% in the 100% silica sand variation. Thus the more percentage of silica sand added as a fine aggregate substitution in the AC-WC mixture, the lower the KAO value obtained.
Utilization of Fly Ash in Construction Materials: Review Triana, Dessy
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.20392

Abstract

Fly ash is the residue from burning coal in thermal power plant, Wich is the most complex anthropogenic material and if the disposal is improper, it will become environmental pollution. The use of fly ash blended cement and sand mixes is growing rapidly in the construction industry. The purpose of utilizing fly ash is to minimize the cost of fly ash disposal, decrease land provision for fly ash disposal, financial benefits, compensation of processing and disposal costs. Fly ash can replace some rare and expensive natural resources. Fly ash has good performance and environmentally friendly. This literature review was conducted systematically. A systematic literature review is defined as the process of identifying, assessing several existing research sources with the purpose of providing specific research answers. Analysis of the main studies on the utilization of fly ash in construction materials focusing on class C fly ash as a substitute for cement, and class F fly ash is a sand substitute. The chemical composition is highly complete with good pozzolanic.  The initial hardening time is reduced between 20 minutes to 260 minutes, final hardening 60 minutes to 260 minutes. Due to high sulfate, class C fly ash takes longer to harden than Class F fly ash. Class C and Class F fly ash with a high aluminosilicate content, and a fine size contributes to the improved workability of concrete. Fly ash can be used as a raw material in various construction industry due it is an oxide-containing material. Fly ash can be utilized for brick producing, ceramic manufacturing, road construction, concrete production and other activities.
Soil Stabilization Using Slag Cement for Improved CBR Performance: A Study in Lebak Regency, Banten Fathonah, Woelandari; Kusuma, Rama Indera; Mina, Enden; Negoro, Giant Muhammad Satrio; Abdurohim, Abdurohim
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.22039

Abstract

The site of Kukulu Village, Parungsari Village, Sajira District, Lebak Regency, Banten was examined in this study. The Dynamic Cone Penetrometer test indicated that the soil carrying capacity value in this location was rather low, at 3.8%. It is crucial to remember that excellent subgrade soil (basic soil) has to have a CBR value of at least 6%. The use of slag cement is good for stabilizing soil because it contains silica and is cementitious. Slag cement is an environmentally friendly material, therefore in this study slag cement was used. The Unified Soil Classification System (USCS) will be used in this study to define the soil type and classification. The soil's grain size, Atterberg limits, compaction, and laboratory CBR tests will all be examined in order to achieve this. The CBR value will be calculated for a period of time and at different percentages of 0%, 8%, 10%, and 12% before and after stabilization using slag cement. In previous research, it was carried out and obtained an optimum CBR value when adding 10% slag cement and experienced a decrease when adding 15% slag cement, so in this study we wanted to find out whether there was still an increase in the CBR value in the range of 10% to 15%. The results of the CBR test obtained the highest CBR value of 23% from the addition of 12% cement slag and 7 days of curing.
Occupational Health and Safety (K3) Risk Management Analysis on Building Construction Projects in Indonesia: Literature Review Maddeppungeng, Andi; Asyiah, Siti; Intari, Dwi Esti; Putro, Miftha Adityo; Setiawati, Dwi Novi
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.21986

Abstract

The construction of building construction projects in Indonesia is inseparable from various risks related to work accidents, therefore risk management is very important for construction to prevent or minimize negative influences caused by an unexpected event. Since the announcement of covid-19 for the first time in 2020 until now, Indonesia is still experiencing the COVID-19 pandemic so large-scale social restrictions are imposed. This leads to restrictions on activities in the construction project environment. This study aims to analyze risk identification, risk assessment, and risk control contained in building construction projects in Indonesia. This research uses the systematic literature review method where data sources are obtained from "google scholar" in the form of published journals regarding occupational safety and health risk management in building construction projects in Indonesia from 2016-2021 with the keywords risk management, risk identification, risk assessment, risk control, and building construction. After the selection process, 23 journals were obtained. From this literature review, the most identified risks are technical project risks, the most emerging risk levels are moderate, and the most widely used risk control is administrative control.
The Effect of Groundsill Height on Bridge Pillar Flow Characteristics (Physical Model) Raissa, Azarine Vashti Alpha; Priyambodho, Bambang Adhi; Purnaditya, Ngakan Putu; Wigati, Restu; Subekti, Subekti
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.22047

Abstract

Groundsill is one of the categories of wide thresholds that are generally built transversely in the river downstream of a building threatened with damage caused by scouring such as bridge pillars. In addition to construction factors, local scour around the pillars can be another factor causing the collapse of the bridge structure. The purpose of this study was to determine the effect of groundsill height on flow characteristics. Physical model research on open channels (flume) was carried out at the Integrated Laboratory of Sultan Ageng Tirtayasa University, Sindangsari Campus. The groundsill model is modeled with dimensions of 8 cm peak width, 30 cm length, and groundsill height variations (1, 2, 3, 4, and 5 cm) made of wood while the bridge pillar model is modeled with a diameter of 1 inch made of PVC pipe which is filled with concrete. The results showed that the higher the groundsill (p), the higher the water level upstream (H1) is greater and downstream (H2) is smaller, while the flow speed upstream (V1) is smaller and downstream (V2) is greater so that the Froude number downstream is greater than upstream. The higher the groundsill (p), the Froude number downstream will increase (supercritical flow) while upstream will decrease (subcritical flow). 
Analysis of the Use of Cobweb-Shaped Foundation for Road Pavement Construction Soelarso Soelarso; Rindu Twidi Bethary
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.21993

Abstract

Flexible pavement and rigid pavement are the two types of road construction pavement. This study attempts to employ CobwebShaped Foundation (KSLL) as an alternative style of road construction, KSLL being the labor of the nation's youth and commonly used in structures. PT. Katama Suryabumi owns the building patent. This study attempts to incorporate KSLL, which has been widely utilized for building foundations, into road construction. The study was carried out by doing experimental comparisons and analysis using the Finite Element Method, in which the model is summarized in order to achieve accurate comparison findings, and it is believed that they will find a formula connected to the design of KSLL for road building. It is expected that this concept may be used to solve problems in designs that do not currently have regulations or standards. As a result, the study objectives are as follows: a) The KSLL foundation is a stiff pavement that may be used as an alternative pavement. b) Calculating the KSLL foundation's strength and settling. b) Restoring and improving the KSLL foundation
Sensitivity Analysis of Investment and NPV Analysis with Monte Carlo Simulation in Asphalt Mixing Plant (AMP) Industry Wachid Hasyim; Ayu Krisma Wardani
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.19784

Abstract

The availability of proper transportation infrastructure in cities / districts with high population growth will support development growth.  Development growth can be seen at the growth of the regional economic level, so that economic growth is strongly supported by the development of road transportation facilities. National development in the transportation sector begins with the implementation of roads as infrastructure that strongly supports the achievement of national development goals. Road planning standards  state that for road pavement layers must meet certain classifications and specifications. Thus, to be able to meet the needs of materials with adequate quality and quantity, a supporting industry is needed, namely in the form of industry or asphalt mixing plants (AMP).  This research is reviewed from the financial aspect which aims to analyze the feasibility of investing in asphalt mixing plants (AMP). Based on the Investment Feasibility Analysis, the NPV (Net Present Value) value is  IDR.  30,777,082,259.61, BCR (Benefit Cost Ratio) is 1.39, IRR (Internal Rate of Return) is  30%, PP (Payback Period) is 4.16 years.  Based on sensitivity analysis, the value of sensitivity investment at IDR.  73,386,171,697.09. NPV value based on monte carlo simulation with two scenarios obtained values of  IDR. 27,553,320,897.33 and IDR. 23,719,088,232.49 respectively.
Prediction of Snyder Synthetic Unit Hydrograph Coefficient for Cidurian Watershed Zulfa, Graciela Febriyanti; Purnaditya, Ngakan Putu; Wigati, Restu; Subekti, Subekti; Priyambodho, Bambang Adhi
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.22046

Abstract

Watershed management is starting with knowing and recording the problems that exist in the watershed. Condition of the watershed that continues to deteriorate can trigger natural disasters such as flash floods that occurred in the Cidurian Watershed. Hydrological design, especially for short-term phenomena runs generates the synthetic unit hydrograph. Snyder synthetic unit hydrograph is the common synthetic hydrograph that widely used on hydrological analysis. Generally, on the snyder synthetic unit hydrograph, the coefficient value (peak coefficient, time coefficient, CW75 and CW50) is only based on estimates or previous research so that the calculation of discharge is less accurate and needs further research. This study discusses the prediction of the value of the Peak Coefficient (Cp), Time Coefficient (Ct), CW75 and CW50 in the Cidurian Watershed using the Snyder Synthetic Unit Hydrograph (HSS) and get a calculation graph between the Polynomial and Collins Unit Hydrographs against the Snyder Synthetic Unit Hydrograph (HSS) in the Cidurian Watershed with rainfall data processing using the Thiessen Polygon, Mononobe, and Alternating Block Method (ABM). The results showed that the value of Peak Coefficient (Cp) = 0.59, Coefficient of Time (Ct) = 0.09, CW75 = 1.22, CW50 = 2.14, with Peak Discharge (Qp) Collins Measured Unit Hydrograph 19th hour = 1.589 m3/s, and Peak Discharge (Qp) Snyder Synthetic Unit Hydrograph 11th hour, 1 = 1.59 m3/s.
Analysis of Heavy Equipment Productivity Tower Crane in The Construction Project of Sultan Maulana Hasanudin State Islamic University Building Maddeppungeng, Andi; Asyiah, Siti; Intari, Dwi Esti; Hakim, Bahtiar Imanul; Setiawati, Dwi Novi
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.21982

Abstract

Building construction in Indonesia has increased rapidly; according to the BPS (Badan Central Statistics), in 2020, building construction from 2016–2019 will have 189 buildings in Jakarta. The construction includes apartments, hotels, offices, and campuses. While productivity measurements are useful as information for the company to evaluate the trends of its productivity developments over time, information from these results will later be used for reference in correcting previous shortcomings. This research aims to determine how long a tower crane’s cycle time, productivity, and operating costs are. This research was carried out on the construction project of the State Islamic University of Sultan Maulana Hasanuddin Banten. The study was conducted by observing the tower crane for six days. From data collection, whether cycle time, productivity, or operating cost, the data analysis used in this study is an analysis using productiveness formulas, cycle times, and operating costs. From the analysis of the data, it can be known that the cycle time of the tower crane heavy tool on April 25, 2022, to April 29, 2022, gained an average of 0.311 hours for the average productivity of the tower crane on April 25, 2022, until April 29, 2022, which is 9662.131 kg/hour, while the operating cost of the crane tower was Rp. 575.037.37 per hour

Page 24 of 31 | Total Record : 303

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