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Proceeding of World Conference
Published by Universitas Narotama Surabaya
ISSN : -     EISSN : 26561174     DOI : -
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 19 Documents
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Search results for , issue "Vol. 3 No. 2 (2021): March 2021" : 19 Documents clear
Effect of Utilization of Bamboo Fiber and Gypsum Substitution as Cement Against Strong Concrete Press Daniel Rizsky Tambunan; Acep Hidayat
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Bamboo Fiber is one of the materials that can be alternative as an added material to increase strong concretepress. The gypsum waste comes from the disposal of household flatfon dismantling, which becomes one of the added materials in the manufacture of cement. The use of both materials as concrete mixture subtitution is expected to reduce environmental pollution and exploitation of natural resources. This research aims to find out the influence of the use of SB as fiber and LG as cement subtitution semen on concrete mixture against strong concrete press. The study used a mixture of SB of 1%, 1.5%, 2%, and 3%of cement weight, as well as LG as much as 3%,and5% of cement weight. Strong press testing was conducted on the 14th and 28th days. The result of this study is that the higher percentage of SB and LG workability is decreasing. Strong press testing shows that all variations have a strong press yield of 1%B3%G above the normal concrete press strength and the rest under normal concrete. The highest press strong value is derived from the variation of 1%B3G with a mixture of 1%SB + 3% LG which is 20.81 MPa.
The Effect of Post-Curing Sulphuric Acid Water Bath on Strong Concrete Press Comes from Three Different Sand Quarry Yudhistira Saptapringga Riesky Sundani Sundani; Agyanatha Tua Munthe Tua Munthe
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Concrete is one of the construction materials that has been commonly used for building buildings, bridges, roads, and others. Concrete as well as other building structures, not separated from damage - damage that can reduce its durability, one of the reasons is because of external influences or the environment in which the concrete structure is located, such as in certain locations, for example in environments related to chemicals, sulfate, chloride, salt or those in marine areas. The purpose of the study was the effect of sulphuric acid water baths on confensional concrete and knowing the concrete with a mixture of sand from which areas were strong press higher after being soaked with sulphuric acid soaking. The research method used is to use the experimental method by mixing sulphuric acid compounds in water as a medium of concrete curing derived from three different sand quarys with variations in the composition of sulfuric acid compounds that are berberda umtuk get strong press results data from this study. From the results of this study, the conclusion that normal concrete derived from mountain sand namely Cimangkok sand (CMK), and Cigombong (BHM) is more resistant to sulphuric acid concentrations of 2% and 5%. Normal concrete derived from river sand i.e. Citarik sand (CTK) is not resistant to sulphuric acid concentrations of 2% and 5% which results in a lower press strength than mountain sand. Normal concrete derived from a mixture of river sand (Citarik) and mountain sand (Cimangkok and Cigombong) called Sand Mix (MX) is more resistant to sulphuric acid concentrations of 5% than other sand
ANALYSIS OF BEKASI RIVER TO FLOOD IN PONDOK GEDE PERMAI HOUSING Fakhri Jauhar Akbar Bima Putra; Jantiara Eka Nandiasa
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

The Bekasi River flow that crosses Pondok Gede Permai Housing is a river network that flows in the housing of Pondok Gede Permai. With a good river flow system, economical and as needed from housing, the passing water flow is expected to flow smoothly according to the dimensions that have been taken into account. The methodology done in this research is a descriptive analysis of evaluative is a method that evaluates the objective conditions in a situation that becomes the object of research and the object of the study, the flow of rivers surrounding the housing Pondok Gede Permai. From the results of this research can be concluded that the cause of flooding in Pondok Gede Permai housing is caused by the confluence of two currents between the Cikeas river flow and the Cileungsi River. And also because of the widespread water from the river Cikeas to the Bekasi River, and because the meeting between the two rivers of Bekasi and Sunagi Cikeas are very small.
Sodium Hypoclorid And Benzalkonium Chloride Usage As A Disinfectant In Residential Area Towards The Durability Of Non-Structure Building Materials Lukas Kurniawan; Agung, SUMARNO
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

It is seen that the world is experiencing health recession due to the coronavirus spread massively which resulting in a COVID-19 pandemic. To prevent and break the chain of coronavirus infecting in Indonesia, The Government and society are actively taking various efforts. One of them is doing a disinfecting process in residential areas. The impact of disinfectants on the structure of building materials is unknown and has never been tested in previous studies. This study aims to test empirically the effect of several chemicals from disinfectant ingredients towards the durability of non-structure building materials which are often used as residential materials. The sample of this study consisted of four group types, that is mortar, brick, hebel stone, and concrete brick. Each type of test object has a total of 6 variations of treatment by spraying or immersing H2O, BZK, and NaCIO chemicals and then testing the compressive strength after the age of the test object reaches 7, 14, and 28 days. The results of the study visually showed that the four types of specimens did not undergo physical changes during the duration of the test. The results of the research data also show that the four types of specimens experience anomalous results in compressive strength. The greatest compressive strength values ??for 4 types of specimens are not all at the age of 28 days, but at the age of 14 days, the largest compressive strength value for mortar is 30.74 MPa in the 6th variation of chemical immersion of NaCIO at 14 days, on hebel brick the largest compressive strength value is 2.41 MPa in the 3rd variation of spraying with chemical BZK aged 14 days, for red brick the largest compressive strength value is 11.48 MPa in the 4th variation of immersion with chemical BZK aged 14 days, and on the concrete brick the largest compressive strength value is 2.20 MPa in the 3rd variation of spraying with chemical BZK aged 14 days.
An Experimental Study On The Effect Of Disinfectant Sodium Hypochlorite (NaClo) Liquid On Density And Compressive Strength Concrete Prilo Kurniawan; Agung, Sumarno, S.T., M.T.
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

The increasing use of disinfectants based on Sodium Hypochlorite (NaClO) for the need of preventive spraying for the COVID-19 pandemic, raises concerns about a decrease in strength in concrete structures. Therefore, the authors researched whether spraying disinfectants based on Sodium Hypochlorite (NaClO) would penetrate the density of the concrete, as well as ascertain whether the concrete structure might experience a massive decrease in compressive strength after spraying. The purpose of this study was to determine the effect of spraying and penetration of Sodium Hypochlorite (NaClO) disinfectant on the compressive strength of concrete. The method used in this research is experimental by doing a trial mix which being worked on at the Becakayu Toll Road Concrete Batching Plant Laboratory - PT. Waskita Beton Precast, Tbk. From the results of the research, the quality of K-500 concrete samples decreased in density by 0.74% in the NaClO-S treatment at the age of 7 days, 0.92% in the NaClO-R treatment at the age of 7 days, 1.09% in the NaClO-S treatment at the age of 14 days, 1.28% in the NaClO-R treatment at the age of 14 days, 1.61% in the NaClO-S treatment at the age of 28 days, 1.55% in the NaClO-R treatment at the age of 28 days. A Comparison of the compressive strength of NaClO-R treatment with Air-R treatment on K-500 quality concrete samples at the age of 7, 14, and 28 days sequentially was 13%, 27%, and 15% higher in the Air-S treatment. The biggest difference in the compressive strength value occurred in the k-500 quality concrete sample at the age of 14 days, namely 352.61 Kg / Cm2 for NaClo-S treatment versus 482.73 Kg / Cm2 for Water-S treatment.
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 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.
The Effect of Variations of Cese Waste Waste Levels on Marshall Parameters in Ac-Wc Layer Muhammad Isradi; Imam Sindu Baskoro; Jaewono Prasetijo; Sumiyati
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

In the asphalt pavement mixture, filler is needed to support the performance of the pavement construction in order to withstand traffic loads. Various types of fillers have been widely used, including rock ash, portland cement and others. However, the limitation of natural resources encourages the use of waste materials in the construction of road pavements, a potential for the production of bagasse. In this study, sugar cane waste was used as a filler in the asphalt pavement mixture. The research method used is an experimental method, where the experiment is carried out to obtain a data set and analysis of test results. The test was carried out in 2 stages, namely testing the test object with Portland cement filler which was carried out to obtain Marshall parameters and KAO values ??and testing of the test object with bagasse ash filler to produce Marshall parameters and optimum filler content values. The results showed that the use of bagasse ash waste with a proportion of 5% to the weight of the filler increased stability. Tests carried out on the AC-WC layer mixture obtained the KAO value of 5.7% and the optimum filler content of 5.5%. The stability value with 7% bagasse ash filler obtained 1237.1 kg by immersing the test object for 30 minutes and 1156.4 kg with 7% bagasse ash filler by soaking the test object for 24 hours at 60 ° C, meeting the minimum requirements of 800 kg.
Analysis of The Acceleration of Time and Cost of Construction Projects by Adding Labor and Working Hours (Overtime) using The Time Cost Trade Off Method (Case study: Construction of The Conexio Apartment Project) Hamonangan Girsang; M. Andi Wahyud
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Systematic project management is needed to ensure the project implementation time is in accordance with the contract or even faster, so the cost incurred can provide benefits and also avoid the existence of fines due to delays in project completion. This study discusses the acceleration of time and cost project in the implementation of high rise building construction projects using the Time Cost Trade Off method. The author will analyze the scenario of accelerating the completion of the project by comparing the addition of working hours by 4 hours (scenario 1) and additional labor (scenario 2). The results of the analysis found the estimated time to accelerate the implementation of the project is from the normal duration of 600 calendar days, after a crash duration there is an acceleration of time to 582 calendar days. With a time efficiency of 18 days / 3.00%. The total cost due to acceleration of time (including indirect cost) for the addition of overtime hours for 4 hours (scenario 1) obtained a normal cost of IDR 66,637,746,719 (excl. VAT), then after the crash cost there is an increase in the cost to IDR 70,224,661,008 (excl. VAT) with an over cost of IDR 3,586,914,289 / 5.38%. Whereas with the addition of labor (scenario 2) a normal cost of IDR 66,637,746,719 (excl. VAT), then after the crash cost there is an increase in the cost to IDR 71,454,128,134 (excl. VAT) with an over cost of IDR 4,816,381,415 / 7.23%.
Comparative Analysis of Semi Basement Wall With Different Cohesion and Basement Depth in West Jakarta Luthfy Alfarizi; Resi Aseanto
Journal of World Conference (JWC) Vol. 3 No. 2 (2021): March 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

DKI Jakarta has a population density of 19,516 people / square km. Government of Jakarta in the PERDA DKI Jakarta No. 7-2010 CHAPTER 5 Article 42 Paragraph 1 states that "every building must provide parking space". To overcome this, semi-basement will be an option to make a parking space that does not require too much excavation costs. This analysis will compare two types of retaining walls, cantilever retaining walls and conventional retaining walls using the Rankine method for static conditions and the Mononobe-Okabe method for dynamic conditions. This analysis results in the conclusion that for a depth of 2.00m, conventional walls are found to be more efficient in terms of costs with a difference of up to Rp. 178,700 / m’. For soil with a depth of 1.75m, cost efficiency depends on soil cohesion. For the higher soil cohesion, the cost of making cantilever walls is more efficient, reaching Rp. 130,600 / m '. For soil with a depth of 1.50m, with higher cohesion, the cantilevered wall will be more cost-efficient than conventional wall making, reaching Rp. 232,400 / m’.

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