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Analysis the effect of moisture content of normal concrete using hammer test

AIP Conference Proceedings 2023年第1期2609卷

作者： Nur Mujahadah Hariyadi Ni Nyoman Kencanawati Ngudiyono 1Master Student of Civil Engineering Program Faculty of Engineering University of Mataram West Nusa Tenggara Indonesia. 2Department of Civil Engineering Faculty of Engineering University of Mataram West Nusa Tenggara Indonesia.

The Hammer test as one of non-destructive concrete strength test should in a non-moist structural condition to produce a high accuracy reading. Since, the strength is only taken from the concrete surface which can be affected by moisture and does not represent the overall properties of the concrete samples. For this reason, hammer test is necessary to compare between the destructive test using a Compression Testing Machine (CTM) a standard concrete strength test and Hammer test. This research used normal concrete with the concrete strength target of 20 MPa, with variations in moisture measured at 0 day, 1 day, 2 days, 3 days, 4 days, 5 days, 6 days, 9 days 14 days and 21 days after removal from curing chamber, as well as the dried samples with 2 days oven to obtain low moisture. The concrete strength test includes compressive and split tensile strength using a cube sample with 15 cm size. The result shows that the compressive strength value of the Hammer test is lower than the CTM test of 12.34 MPa at 40% moisture, and the difference is higher as the moisture of the concrete surface increases. At various moisture content, the ratio of split tensile strength towards the compressive strength ranges 9.94% - 13.65%.

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Study on the waste valve's stroke to water hammer pressure and flow patterns in a hydraulic ram pump

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AIP Conference Proceedings 2023年第1期2568卷

作者： I. P. Widiarta M. Suarda I. G. K. Sukadana M. Sucipta N. M. Suantini I. N. Suweden 1Student at Master Study Program of Mechanical Engineering Faculty of Engineering Udayana University Denpasar Bali Indonesia 2Mechanical Engineering Department Faculty of Engineering Udayana University Denpasar Bali Indonesia 3Chemistry Department Faculty of Mathematics and Natural Science Udayana University Denpasar Bali Indonesia 4Electrical Engineering Department Faculty of Engineering Udayana University Denpasar Bali Indonesia

The pressure in the hydraulic ram pump increases due to a sudden cessation of flow out through the waste valve when the waste valve is closing. The increasing of water hammer pressure is strongly influenced by velocity of the water flow in the drive pipe. Therefore, the waste valve has an important role in mechanism of the occurrence of water hammer pressure, performance, and flow patterns in the hydraulic ram pump. This study investigated the water hammer pressure and the flow patterns in the hydraulic ram pump that has been installed at Bon sub-village, as well as its performance at various strokes of the waste valve. In addition, CFD simulation using Ansys Fluent was conducted. The result show that increasing stroke of the waste valve increase the water velocity in the drive pipe and the water hammer pressure, and the optimum of the waste valve stroke has been predicted subject to volumetric and total efficiency using the equation of their trendlines. Furthermore, the flow patterns such as vortex, split flow, and blockage mass in the hydraulic ram pump have been identified.

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The development of road evaluation and monitoring system using database application

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AIP Conference Proceedings 2019年第1期2114卷

作者： Bayu Setiawan Ary Setyawan Budi Yulianto 1Student of Civil Engineering Master Program Engineering Faculty Universitas Sebelas Maret Surakarta Central Java Indonesia 2Lecturer of Civil Engineering Master Program Engineering Faculty Universitas Sebelas Maret Surakarta Central Java Central Indonesia

Road infrastructure is one of a nation’s strategic assets. It accommodates the basic human needs to move from one place to another place in order to fulfill their needs. In Furthermore, to keep its optimum service level, this infrastructure requires a routine maintenance. In the present study, road geometric data, road distress type, road distress gps coordinates and cost estimation are integrated into one road maintenance database application. By doing data integration, the user can easily analyze the pavement maintenance strategies, and eventually this system database will give good contribution towards decision making process to achieve reliable road maintenance system and sustainable pavement. The observed road pavements were Joko Tingkir, Monginsidi, Ir. Juanda and Kyai Mojo—all of these are under the authority of Public Works Agency of Surakarta City Government. Relevant data were acquired by conducting field observation. The web database application is developed as a standalone extension from previously android-based application called Road Evaluation And Monitoring System (REMS). GPS coordinates, PCI index value derived from the calculation of distress type, distress area or volume and its deduct value were generated from REMS application. Distress type and severity was used to determine the maintenance method. Bina Marga’s standardized unit price indices and each road distress volume or area were used as base calculation to obtain final work unit price. The estimated maintenance cost for Joko Tingkir road is Rp28,087,654.29, Monginsidi road is Rp46,784,249.87, Ir. Juanda road is Rp266,780,014.78 and Kyai Mojo road is Rp76,584,885.27. All of the calculation results are displayed on the web-based interactive map layer, graph and tables for each of the observed roads. The table of road distress, maintenance and treatment recommendation are also displayed for detailed analysis.

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Forecasting of origin-destination matrix of freight transportation of Surakarta with maximum likelihood method

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AIP Conference Proceedings 2018年第1期1977卷

作者： Nuning Trisnawati Syafi’i Dewi Handayani 1Student of Master Program of Civil Engineering Universitas Sebelas Maret Indonesia 2Lecturer of Department of Civil Engineering Universitas Sebelas Maret Indonesia

Congestion is a major transportation problem endured by most cities since it potentially causes adverse impacts to the economic and social dimension as well as to the environment. Such a problem will become more complicated if it is not supported by an appropriate transportation planning. Therefore, an effort to estimate the impact of freight transportation on the road network performance becomes essential to reduce the potential congestion in the future, while the determination of OD Matrix is a crucial step in the process of transportation planning. The aim of this research was to estimate the OD Matrix of freight transportation of Surakarta City in 2025. The Gravity model was used to determine the OD matrix. Calibration of parameter β on gravity model was solved by maximum likelihood method. It found out the parameter value of β was 0.081. The result showed that the estimated total external-external freight transportation in the morning peak hour in 2025 reaches 2.642 pcu/hour.

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Structural and functional prediction of pavement condition (A case study on south arterial road, Yogyakarta)

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AIP Conference Proceedings 2018年第1期1977卷

作者： Untung Rusmanto Syafi’i Dewi Handayani 1Student of Master Program of Civil Engineering Universitas Sebelas Maret Indonesia 2Lecturer of Department of Civil Engineering Universitas Sebelas Maret Indonesia

Pavement conditions will reduce the level of service over time. It is characterized by the occurrence of structural damage of the road pavement layers in which the neglect for a long period can worsen the condition of the pavement layers that can affect the traffic safety and comfort. Road pavement performance is determined based on the requirements of the functional and structural condition. The functional conditional requirements relate to roughness, pavement surface aggravation, while the structural condition requirements relate to the pavement strength or carrying capacity in serving the load and the traffic flow. The aim of this research is to evaluate the functional and structural of the flexible pavement on south arterial road in Yogyakarta and to provide recommendation of maintenance and rehabilitation. The functional evaluation of pavement is based on DGH and PCI method, which combines International Roughness Index (IRI) and Pavement Condition Index (PCI) values, while structural pavement evaluation is performed by analyzing the deflection value of Falling Weight Deflectometer (FWD) measurement analyzed by AASHTO 1993 with the output being the Structural Number (SN) value, where SN effective/SNfuture ratio results Structural Condition Index (SCI) value which determines whether a pavement requires overlay or not. The results of functional analysis based on IRI and PCI values indicate that the road conditions for each segment are good, damaged and heavily damaged. The structural analysis for 2018 shows all segments yield SCI value<1, which means they require an overlay. The segments requiring functional overlay are Km 00 + 000 up to 02 + 400, Km 04 + 400 up to 05 + 600, Km 07 + 600 up to 13 + 200, Km and Km 16 + 000 up to 18 + 400. Meanwhile, the segments that require structural overlay are: Km 02 + 400 up to 04 + 400, Km 05 + 600 up to 07 + 600 and Km 13 + 200 up to 16 + 000.

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Impact of freight transportation on road network performance in Surakarta with toll road scenario

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AIP Conference Proceedings 2018年第1期1977卷

作者： Wardatul Jamilah Syafi’i Dewi Handayani 1Student of Master Program of Civil Engineering Universitas Sebelas Maret Jl. Ir Sutami 57126 Indonesia 2Lecturer of Department of Civil Engineering Universitas Sebelas Maret Jl. Ir Sutami 57126 Indonesia

The increase in traffic growth is in line with the increase in transportation demand. Moreover, the freight movement is very important to support the economic growth and business in urban area, especially in developing countries, including Indonesia. In addition to its beneficial impact, freight transportation can also cause a serious problem, such as congestion, air pollution, and infrastructure damage. Such problems can be anticipated by good transportation planning. Studies related to freight transportation planning and modelling in Indonesia are very few hence we are interested in doing research about the impact of freight transportation on the road network performance in Surakarta with toll road scenario. One of the important aspect to predict the impact of freight transportation for the future planning is the trip distribution represented by Origin-Destination (OD) matrix. The purpose of this study was to examine the value of β as a parameter of gravity models and to evaluate the impact of freight transportation with toll road scenario in 2025. The result shows that the value of parameter β is 0.081. Road network performance as indicated by traffic volume per capacity (V/C) more than 1 without any scenario and with scenario in toll road is 18.8719% and 10.468%, respectively. It means that toll roads have significant contribution in reducing congestion level.

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Rain design analysis using TRMM (tropical rainfall measuring mission) method (case study: Cisadane watershed)

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AIP Conference Proceedings 2018年第1期2014卷

作者： Slamet Rahman Raharjo Mamok Suprapto Cahyono Ikhsan 1)Student of Civil Engineering of Master Program Sebelas Maret University Indonesia 2)Lecturer of Civil Engineering of Master Program Sebelas Maret University Jl. Ir. Sutami 36A Kentingan Jebres Surakarta 57126 INDONESIA

In this study aims to provide a comparison of rainfall plans using methods that are commonly used with Tropical Rainfall Measuring Mission (TRMM) method. To conduct a design rain analysis often uses rain data outside the study area. In the last decade, theory has been developed to find design rain in a watershed that does not have a rain register station. This theory also needs to be studied more deeply and compared with the other theories that have been commonly used. The TRMM (Tropical Rainfall Measuring Mission) method is a method that carries various sensors to detect atmospheric objects and phenomena and is designed to monitor and assess rain in the tropics. The main instruments in TRMM rainfall are TRMM Microwave Imager (TMI), The Precipitation Radar (PR), and the Visible and Infrared Radiometer System (VIRS). The result of the analysis can be concluded that in the rain plan with re-time under 50 years did not happen big difference. Whereas in the rain plan over 50 years there is a big difference.

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Employing Galerkin method and field study for model calibration to perform sediment transport modelling in Agathis Lake, Universitas Indonesia

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AIP Conference Proceedings 2018年第1期2014卷

作者： Rian Mantasa Salve Prastica 1Master Student Graduate Program of Civil Engineering Department Universitas Indonesia Kampus UI Depok West Java Post code 16424 Indonesia

The increasing of urban development and the decreasing of public awareness to environment promote flood every year for urban cities. Several lakes or ponds are sacrificed due to both urban development and landfilling. Bad habit of society to throw garbage to the lakes affects the society to think that the economic value of lakes could be increased by filling them with the land. These lead to make the lakes become vulnerable to sedimentation from urban activities. Universitas Indonesia as educational institution starts to develop how to manage sedimentation by hydrodynamics and sediment transport modelling. The research uses Resources Modelling Associates (RMA) program to run the model and Agathis Lake as the study area to perform the simulation. It is expected that the program output data could represent the field data, so the validation method should be conducted. The issue to validate the data would be problematic if simulation factors data could not accommodate real-world observed data. This study aims to employ Galerkin method to understand finite element method in Resources Modelling Associates program (RMA) in order to avoid black box when using it and to conduct a field study to perform calibration method of sediment transport modelling in the study area, Agathis Lake that is located in Universitas Indonesia.

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The evaluation of irrigation operation of Dimoro Irrigation Area, Karanganyar Regency, Central Java, Indonesia

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AIP Conference Proceedings 2018年第1期1977卷

作者： Dian Retno Anugrah Sobriyah Dewi Handayani 1Student of master program of Civil Engineering Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta Indonesia 3Department of Public Works Karanganyar Jl. Lawu No.341 Kompleks Perkantoran Karanganyar Indonesia 2Lecturer of master program of Civil Engineering Universitas Sebelas Maret Jl. Ir. Sutami 36A Surakarta Indonesia

In an irrigation system, one of the important activities in addition to maintenance is irrigation operations. The indicators of successful irrigation operations are the increased water use efficiency, the increased cropping intensity, the declined water-sharing conflicts, the increased agricultural production, and the decreased crop dryness. This research was conducted to know the success of irrigation operation in an irrigation area, which is Dimoro Irrigation Area at Karanganyar Regency. Data were taken from 2013 to 2016. The analysis was based on the AHP weighting, ranking scale and Permen PU No. 32/2007 to determine the performance condition of irrigation operations. The results of the performance of Dimoro Irrigation operations in 2013, 2014, 2015, and 2016 were 74.38%, 81.96%, 90.12%, and 100%, respectively. It can be concluded that the performance of irrigation operations showed an increasing trend that indicates the success of irrigation operation in Dimoro Irrigation Area.

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Analysis of basement establishment effect of solo mix-used development (MD) towards water tables

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AIP Conference Proceedings 2018年第1期2014卷

作者： Muhammad Hasan Wicaksono Cahyono Ikhsan Bambang Setiawan 1Student of Master Program of Civil Engineering Universitas Sebelas Maret Surakarta Jl. Ir. Sutami 36A Kentingan Jebres Surakarta 57126 Indonesia 2Lecturer of Master Program of Civil Engineering Universitas Sebelas Maret Surakarta Jl. Ir. Sutami 36A Kentingan Jebres Surakarta 57126 Indonesia 3Lecturer of Master Program of Civil Engineering Universitas Sebelas Maret Surakarta Jl. Ir. Sutami 36A Kentingan Jebres Surakarta 57126 Indonesia

The basement construction of Solo Mix-used Development (MD) with limited land located in the center of Surakarta city requires the construction of basement as a parking most of that construction is made with soil excavation. This soil excavation can affect the water table around the project. This research aimed to figure out the rate of decreasing of the water table. The research methods which used were a study of soil characteristic and observation of wells. The study of soil was done by investigating 2 zones consisting of 5 drill points with a depth of 60 m and 40 m. The observation of wells was conducted at 25 m and 125 m distance from main well pumped with a variation of discharge capacity. The results of the soil investigation indicate that the water table at the location of the project site is between -3.1 m∼-3.2 m depth. The results of the decrease of the water table at 25m distance and distance 125m are 0.89 m and 1.82 m respectively. The decrease of the water table occurred in the extreme at the discharge of 1.30 m3/sec with the decrease of 5.27 m which can get the residents’ wells dry. It is expected that there is further information about the rate of the water table, so that it could be figured out the decrease of water table outside the location of the basement.

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