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Proceeding of World Conference
Published by Universitas Narotama Surabaya
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Core Subject : Economy, Health, Education, Engineering,
Economics, Econometrics & Finance Education Engineering Mathematics Medicine & Pharmacology
Proceeding of World Conference, is Publication of conference articles in the field of multidisciplinary sciences published by the World conference; aims to make it easier for readers and writers to access articles during time and make it easier to download and distribute.
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Articles 265 Documents
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The Effect of The Use of Limestone As a Cement Subtitution and Ceramic Waste or Tile As a Coarse Aggregate Subtitution in Concrete Mixtures to The Strength of Concrete Press Acep Hidayat; Ahmad Faham
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Concrete is the result of the preparation of materials consisting of cement, aggregate and water. All the constituent materials of concrete are obtained from natural resources, which, if exploited continuously will be increasingly depleted. The use of waste as an added material or as a substitute material is a good alternative for mixing the building blocks of concrete. Extinguished lime is one of the materials for making cement where quenched lime is made without a fabrication process such as cement which produces waste during the fabrication period. As for ceramic or tile waste, it is one of the building wastes that cannot be used anymore so that ceramic waste can be used as a substitute for coarse aggregate in the concrete mixture. This study aims to determine the effect of using extinguished lime as a substitute for cement and ceramic or tile waste as a substitute for coarse aggregate in the concrete mixture on the compressive strength of concrete. This study used a cylindrical specimen measuring 15x30 cm as many as 40 samples from 4 mixed variations and added with 4 normal concrete samples which serve as benchmarks. This study used a mixture of lime substitute as much as 15%, and 25% by weight of cement, as well as ceramic or tile waste as much as 30%, and 60% of the weight of coarse aggregate. Where the concrete compressive strength test was carried out on day 28. The results of this study were that the resulting slump value was still in accordance with the mix design with a range between 60-180 mm with the highest slump value found in the variation of 15% lime + 60% ceramic waste, namely 15 cm.
The Cost Comparative Analysis of Steel Frame Bridge Installation Work Methodology Between Using Cranes and Using Launching Gantry in Muara Karang Combined Cycle Power Plant 400-500 Mw Project Fariz Gading Pangestyo; Anjas Handayani
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Electrical energy is one of the most important and vital human needs that cannot be separated from daily needs. The case study was taken from the Muara Karang Combined Cycle Power Plant 400-500 MW Project, which is part of a 35,000 MW governmental program that aims to fulfill electricity needs from Sabang to Merauke. In this project, a method of implementing steel-frame bridge installations will be sought in terms of cost. That way, later you will get an efficient installation implementation method. In this study, the authors used secondary data from literature and primary data that taken directly from field observations. Data processing uses statistical tests with the Stepwise method. The cost for the work method using the crane is IDR 367,212,450, while the cost for the work method using the launching gantry is IDR 321,868,085. In the percentage result of the steel frame bridge installation work method, the greatest effectiveness factor is Tool Reach (X11) of 94.5%. Whereas in the work method using launching gantry with the variable that has the greatest effectiveness is the Capacity of Tools Used 76.8%. Judging from these results the factors that have the highest effectiveness to influence the time performance in the implementation of the steel frame bridge installation work method are the tool factor and the material factor.
Performance Analysis Of Trans Patriot Bus Impact Covid-19: Terminal Bekasi - Harapan Indah Route Amar Mufhdin
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

As the population of the former city grows, the movement of the people in it increases. Provision of mass transportation or Trans Patriot buses is needed to anticipate the congestion that will occur by providing a cheap, fast and safe bus type that can be an alternative. Therefore, it is necessary to conduct research on the performance and quality of service to determine the level of passenger satisfaction with the performance of the Trans Patriot bus on the Bekasi - Harapan Indah Terminal route. From the comparison of the operational performance of the Trans Patiot buses before Covid 19 and the adaptation of new habits, the Comparison of the performance of the Trans Patriot bus for the Bekasi Terminal - Harapan Indah route before Covid 19 and the adaptation of new habits has increased in load factors, headway, travel time and travel speed, This increase is very good in providing services for Trans Patriot bus users. From the results of the questionnaire service performance level obtained from Trans Patriot bus users for the Bekasi Terminal - Harapan Indah route, which stated that the Trans Patriot bus performance was very good at 9%, good at 33%, good enough at 44%, less good at get 11% and not good at 4% and the level of user satisfaction states Very Satisfied at 9.9%, Satisfied at 41.4%, Quite Satisfied 39.6%, Less Satisfied at 8.9% and Not Satisfied 0.4%. This research is expected to be a reference or material for the Bekasi city government to take a policy so that the performance and service of Trans Patriot buses will increase in reducing congestion in the city of Bekasi.
Analysis Tower Bts Sst 4 Leg Angular 42m Due To Extend and Additional Antenna Load: Case Study of The Semayap Kotabaru Location Arif Johansyah; Agyanata Tua Munthe
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

In BTS tower planning, the load that affects is the tower load itself, live load and lateral (side) loads that have a dominant effect is wind loads, because wind loads have high sensitivity to steel construction buildings (have a mass that tends to be light). Wind loads are calculated according to the Telecommunications Industry Association and Electronic Industries Alliance (TIA / EIA) standard structural standards for steel antenna tower and antenna supporting structure (TIA / EIA-222-G, 2005). The analysis uses the MS Tower V6 program, as an application to simplify telecommunication tower modeling. The purpose of this paper is to find alternative tower reinforcement so that it can withstand additional loads, be it additional loads due to extend and additional loads due to the proposed antenna.Based on the analysis results, the existing tower is still safe with a ratio of 0.345 <1, but the tower with an additional height and additional load of the antenna is not safe with a ratio of 1.189> 1, and the tower after being strengthened on the tower leg with a height of 0m-36m is done with STA (Star Angle) . And for reinforcement for leg towers at a height of 36-40m, it is done by adding the redundant member to the tower ratio to 0.689 <1, which means it is categorized as safe.Analysis with operational wind load (84km / hour), the reinforcement tower can withstand a maximum twist of 0.3436, a maximum sway of 0.0413, a maximum displacement of 0.1402.
The Effect of Limestone Substitution as Cement and Plastic Waste Slike Aggregate Slike on the Compressive Strength of Concrete Acep Hidayat; Alan Bandangan
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

With the development of concrete technology in these days, concrete innovation is needed because it does not rule out the possibility of this concrete material, namely fine aggregate, coarse aggregate, cement, and water, which is decreasing over time or thinning. An innovation is needed that can reduce the use of cement by using other materials, so that the amount of cement usage can be reduced. Examples of innovation as a material that can be mixed with concrete include fly ash, palm ash, extinguished lime, bagasse ash and others. This is what drives research for concrete mixtures other than sand, gravel, cement and water, adding materials to the concrete mixture, namely limestone as a substitute for cement and plastic waste as a substitute for coarse aggregate. The use of limestone is expected to reduce cement levels and the use of plastic waste can reduce the use of gravel from river stones so as not to damage the river ecosystem. The addition of limestone and plastic waste is expected without reducing the strength of the concrete. This study uses the percentage of limestone made with a percentage variation from 0% to 15% (0%, 1%, 5%, 10%, and 15%) of the volume of cement based on experiments (mix design calculations) and for plastic waste with a percentage variations from 0% to 10% (0%, 1%, 5%, and 10%) of the crude aggregate volume based on my experiment (mix design calculations). The concrete is molded by using 4 cylindrical molds measuring 15cmx30cm for each test concrete quality. The compressive strength will be tested at the age of 14 and 28 days. The results of the research on concrete with additional substitution in the form of lime which was substituted into cement and plastic waste substituted for crude in coarse agrrates tended to experience a decrease in quality or compressive strength when compared to normal concrete without any added substitute materials. Research on the highest compressive strength value of concrete mixed with substitution material is the mixture or variation A (1% + 1%) with the average results of 20.27Mpa.
Hydraulic Analysis of The Upper Segment of Cileungsi River, Bogor District Using Hecras 5.0.7 Program Acep Hidayat; Febrianto Tri Prasetyo
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Regional Flow of the River Cileungsi has extensive DAS 266 , 15 km2 and a length of 39.11 km, crossing the district of Bogor and Bekasi. Downstream of the Cileungsi River is the Bekasi Hulu River which is the confluence of the Cileungsi River and Cikeas River . With the condition of land-use land DAS Cileungsi the first form forests changed into land estates and settlements led to discharge runoff were high and result in the occurrence of flooding in the summer rain . Flood prevention efforts are planned by making a dam . Analysis profiles flow conducted by using software HEC-RAS 5.0.7, Planning control flooding river Cileungsi using debit flood plan Q25th which amounted to 1271.45 m3 / sec and Q50th which amounted to 1376.99 m3 / sec. In the results of simulation of unsteady flow with HEC-RAS can be concluded that the control of flooding with the manufacture of a dam on the upstream river Cileungsi , already managed to overcome the flow of water excess in the upper reaches of the river
Analysis Comparison of Plate and Beam Formwork Using Semi Conventional Formwork with Aluminium Formwork System in Terms of Cost and Duration on Vasanta Innopark Project Deviana Cahyani; Anjas Handayani
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

The development of technology in the world of construction in Indonesia marked with the increasing number of innovations used in the construction process, one of which is formwork. Formwork is one of the most influential jobs on construction projects, especially in terms of cost and time. Therefore, modern Formwork innovations continue to emerge, one of which is Aluminium Formworks System. In this study the authors conducted comparative analysis of cost and time among semi-conventional Formwork with Aluminium Forcoand also spread questionnaires to find out if the Aluminium formworks are effective in replacing semi-conventional formworks on the Vasanta Innopark project. The results of the questionnaire will be analyzed using validity tests, realibility, correlation, and regression in SPSS software. The result of this research, the total cost needed for semi-conventional formwork is Rp. 6,577,699,867.20 and the total cost for the aluminium formwork is Rp. 6,985, 970.893.44 where aluminium formwork is more expensive by Rp 408,271,026.44 or 5.84% more expensive. And the time required conventional formwork is for 342 days while for aluminium formwork for 180 days or with a difference of 162 days or about 47.37 percent. And from the results of the questionnaire obtained that the effectiveness of aluminium formwork in replacing semi-conventional formwork is 0.833 or 83.3%.
Acid Effect Sulphate Against Strong Concrete Press Containing Lime As Substitutions of Cement and Glass As Substitution of Coarse Aggregate Bima Arifian T. R; Syafwandi,; Donald Essen; Acep Hidayat
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Lime as a concrete mixture is done because lime contains elements of calcium oxide (CaO) which is the material for the manufacture of cement from 60-65% (Tjokrodimuljo, 2007). Glass waste comes from the waste glass industry has a silica content of 72.20% (Fikriansyah and Tanzil, 2013). The use of these two materials as a concrete mixture of substitution material is expected to reduce the pollution of the CO2 gas environment due to the burning of steam from the manufacture of cement and natural resources exploitation due to excessive aggregate mining. This research aims to determine the influence of sulphuric acid from 2% for strong concrete emphasis that contains glass in lieu of coarse aggregate and lime as a cement substitution. Penelitian ini menggunakan campuran lime dari 7% dan 10% dari berat semen, serta 5% dari limbah glass, dan 9% dari berat kerikil. Compressive strength testing is carried out on the 7th, 14th, 21th, and 28th days. Results of this study showed that the strong emphasis of concrete with a lime mixture of 10% + 5% Glass on 28 days obtained a strong press of 12.13 MPA higher than normal concrete ie 7.68 MPA on the 28th day.
Analysis Of The Placement Pattern And The Needs Of The Rain Station With Kagan-Rodda Methode On Das Progo Yogyakarta Jantiara Eka Nandiasa; Masnia Masnia; Mamiek Purwaning
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Climate change that occurs has an impact on various fields. In the Yogyakarta region, most of the people work in agriculture and fishing. Where the two fields are closely related to rainfall data and rainfall patterns. Based on these conditions, it is necessary to conduct a study on the need for maximum rainfall data. From the data obtained from the Serayu Opak River Basin Center for the Progo Watershed in Yogyakarta, there are 8 active rain stations that are still operating, but they are not maximized because they are often damaged. So that it is necessary to analyze the needs of the rain station and the placement pattern needed to obtain the maximum rainfall data. The method used in this research is the Kagan-Rodda method. This method can analyze the needs and distribution patterns of the rain stations required by calculating the rainfall data from existing stations. From the calculation with this method, it is obtained that the need for rain stations for the Progo River Basin Yogyakarta region is 11 stations. It is recommended to add 3 new stations with a distribution pattern as described with the distance between stations of 12,742 km.
Comparison the Analysis Results of Soil Improvement PVD Preloading & Stone Column Methods for Accelerating Soil Consolidation Anneesha Fairuz; Syafwandi
Journal of World Conference (JWC) Vol. 3 No. 1 (2021): January 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

The third runway plan for Soekarno-Hatta Airport will be right on land which is quite dominated by soft soil, which of course is very prone to large subsidence at a relatively slow time. Because the time factor is very narrow while the target is constantly being pursued, it is necessary to have an appropriate soil improvement method to overcome this problem. There are two options, (1) Prefabricated Vertical Draining (PVD) and (2) Stone Column. Both are installed in a triangle pattern at two different distances. The effectiveness analysis between the two was carried out based on references from FHWA (1983) and Priebe (1995). The final output of this final project report is the result of reduction obtained and the length of time required to achieve the degree of consolidation in accordance with the requirements, with comparisons based on the results shown by the time vs settlement curve. The author's initial hypothesis considers that the use of PVD is superior to the use of Stone Columns in this case because the decline time is faster even though the resulting decrease is not much different from that produced by Stone Column.

Page 15 of 27 | Total Record : 265

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