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IJTI (International Journal Of Transportation And Infrastructure)

ijti
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Published by Universitas Narotama Surabaya

ISSN : 25974734 EISSN : 25974769 DOI : -

Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture Transportation

Arjuna Subject : -

Articles 7 Documents

Search results for , issue "Vol 2 No 2 (2019): March 2019" : 7 Documents clear

TIME OPTIMIZATION USING CPM, PERT AND PDM METHODS IN THE SOCIAL AND DEPARTMENT OF KELAUTAN BUILDING DEVELOPMENT PROJECT GRESIK DISTRICT Ardabil Maulana; Fredy Kurniawan
IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734 Vol 2 No 2 (2019): March 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

Planning a project there are many important things that affect the success and smoothness, one of which planning time implementation of the right and efficient work. The way to overcome the problem is by using several methods such as CPM (Critical Path Method), PERT (Project Evaluation and Review Teqnique), PDM (Precedence Diagram Method). From the calculation result show that the duration of project completion using CPM method is 57 weeks, project completion duration using PERT method is 78 + 7.5 weeks with the probability of achieving project completion time target is 99.87% and project completion duration using PDM method is 30 weeks. So the method that best suits the Social Service Development Project and the Office of Marine Gresik Regency is the PDM method because the PDM method is capable of producing shorter project completion periods than the CPM and PERT methods of 30 weeks.

RISK MANAGEMENT IN CONSTRUCTION OF DRY BULK JETTY AT TELUK LAMONG MULTIPURPOSE TERMINAL Bayu Puji Nugroho
IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734 Vol 2 No 2 (2019): March 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

Risk is a situation that is uncertain and there is an element of danger, the consequences that could occur due to a process that is ongoing or upcoming events. One of them in construction, where activity in this activity, there is some risk that may occur and give a great impact in the success of the completion of the work. Approaches were made to the risks involved with understanding/identification of risk, risk measurement, risk mapping, the response to risk. So with the existence of such activities can provide a recommendation as to whether the risks are acceptable, divided, reduced or avoided. This research was conducted with descriptive quantitative research methods. The results of this study concluded that there were 7 risk factors in very high level understanding of contract documents i.e., different site condition, productivity, quality equipment/material quality, smooth cash flow, the competence of sub contractors, and the influence of the weather. Against the risk of handling very high i.e. by way of doing business – business everything possible so that it can reduce the level of risk that exists so that the work can be resolved properly and the third project targets can be achieved.

CEMENT ADDITIVE USE REDUCTION FACTORS TO IMPROVING THE QUALITY CONCRETE BIOCONC Muhammad chabibullah; Tony Hartono Bagio
IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734 Vol 2 No 2 (2019): March 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

Technology applications in the concrete mix is ??growing very rapidly in this modern era to obtain concrete results with characteristics that are environmentally friendly and non-toxic. Bioconc is innovation in developing green technology with the insertion of a micro-gap or slit gradation mycelia microbe as a micro-filter to mengoptimalkanatau reduce the amount of cement concrete on the concrete mix in total will increase the efficiency in the concrete and reduce the material components of the most expensive in the concrete, the cement. in job mix additive Bioconc require R%, ie a reduction factor of cement that will determine how the dose of cement and dose additive Bioconc, and therefore to seek R% require some percentage of reduction factor of cement optimum ranging from the concrete Normal, 5%, 10%, 15%, 20%, 25%, 30%, 35%.? + 31271x? - 4709x³ - 233.1x² + 79.66x + 22:18, concrete quality obtained from normal concrete with fc '= 20 MPa generate optimum value reduction of cement amounted to 28.869%.

LIGHTWEIGHT CONCRETE MAKING ANALYSIS USING MIXED CELLULOSE Nanang Budi Setyawan; Fredy Kurniawan
IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734 Vol 2 No 2 (2019): March 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

Development era of globalization has resulted in increasing number of second-hand goods / waste that its existence can be a problem for life in the future. Many things are done in order to recycle paper cement in order to overcome this problem the existence of waste. One way is to use waste paper to be a part of the building. The purpose of this study, to determine the compressive strength and optimum density. Laboratory experimental method uses a variation of 10%, 20%, 30% and testing conducted in the form of compressive strength and density. From the test results obtained by the result of decrease in the compressive strength and density. In addition cellulose concrete mix design with variations determined that 10%, 20%, 30% resulted in a decrease in the compressive strength of concrete,

CASE STUDIES OF PRIVATE GOVERNMENT COOPERATION: PROCUREMENT OF LAND DEVELOPMENT PROJECTS TOLL ROAD KRIAN – LEGUNDI – BUNDER – MANYAR Prasetyo Adi Sungkono; H Fredy Kurniawan
IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734 Vol 2 No 2 (2019): March 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

One of the efforts to maintain and enhance the economic growth of a region is supported by the existence of infrastructure development. Infrastructure development in the form of a toll road could increase the potential for the development of the economy of the region through improved the smooth flow of goods and services. Toll road construction project Krian– Legundi – Bunder – Manyar areas is one of national strategic Project (PSN) that are in the shadow of the State Ministry of Public Works and Public Housing (PUPR) with PT. Waskita Bumi Wira as the initiator. The research method used is descriptive qualitative, i.e. by doing observation and interviews with related parties on the project construction of KLBM toll road. The results of this study are: (i) the forms of cooperation carried out in the construction of KLBM toll roads, is Build Operate Transfer (BOT); (ii) the process of acquiring the land in KLBM toll road development projects are the responsibility of PT WBW assisted by PPK Land Procurement and BPN Sidoarjo and Gresik Regency; (iii) Proceedings reversion bailouts land is done through examination by the BPKP and then verified by the LMAN and the value of payments carried out as stated in the agreement.

EFFECT OF ADDING POLYVINYL ACETATE AND COCONUT SHELL ON CONCRETE Vivaldi Octavianto R; Fredy Kurniawan; Diah Ayu W R
IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734 Vol 2 No 2 (2019): March 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

Manufacture of concrete with a mixture of coconut shell and polyvinyl acetate. The material used in this study are from the coconut shell coconut waste treatment process which is crushed to a maximum size of 20 mm, whereas polyvinyl acetate condition is milky white emulsion. This study uses laboratory experiments concrete according to standards ISO 7656: 2012 for normal concrete and developed into concrete innovation. Coconut shell as a substitute for gravel with a rate of 8% and 10%, while the addition of polyvinyl acetate in the amount of 8% and 10%. At the time of fresh concrete workmanship, testing the slump test to control the workability and homogeneity. Treatment (Curing) specimen is done by covering the paper specimens with wet cement. Compressive strength testing carried out during the 28 days of the test specimen. The results obtained on the compressive strength with the highest average percentage of materials such as concrete polyvinyl acetate 8% and 8% of coconut shell Amounting to 351 kg/cm2 with an average density of 2199 kg/cm3. In each of the test object with a weight value is the quality efficiency in concrete polyvinyl acetate 8% and 8% of coconut shell.

VALUE CHAIN PALM OIL INDUSTRY ANALYSIS ON THE POLYOL POLYESTER PATHWAY Adriana Sari Aryani; Yulian Syahputri; Hermawan Hermawan
IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734 Vol 2 No 2 (2019): March 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

Palm oil is one of important Indonesia's export commodities. In 2017, the export value of palm oil and its derivatives (excluding oleochemicals and biodiesel) penetrated US $ 22.97 billion. The bright prospect of the palm oil commodity in the world vegetable oil trade encouraged the Indonesian government to develop an integrated palm oil industry. On the other hand, some downstream petrochemical products have begun to experience difficulties in raw materials, including Polyurethane. Polyurethane is a polymeric material from polyols and isocyanates which are widely used as packaging. Polyol itself is a polyether produced from the petroleum fraction. The polyol industry can be developed in the industrial tree branch of glycerol / glycerin in the large palm oil industry tree. Glycerin is generally the most end product of the palm oil fractionation industry, after cooking oil, margarine, shortening, and soap. In addition, glycerin is also a by-product of fatty acid esterification during biodiesel production. The value chain analysis carried out in the palm oil industry chain shows that polyol production has added new pathways that can extend the palm oil downstream industry chain. Analysis carried out on the main chain and the combined oil palm industry chain has been successfully used to map the polyol industry value chain on the palm oil track. The extension of the palm oil industry value chain on the polyol industry pathway can unite the industry with the chain of production of the petrochemical industry, in this case polyurethane, which at least can help substitute raw materials. A more detailed analysis of the perceptions of the role of the polyol industry in two directions, namely the palm oil industry chain with the polyurethane industry shows that there is a very large intersection of interests. Almost all perceptions of the role of key value chain activities in the polyurethane industry can be covered by the role of the value chain main activities in the palm oil polyol industry. Both value chains can be said to complement and complement each other. The production of polyester polyols can be absorbed by the needs of the polyurethane industry.

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Jawa timur

INDONESIA