Journal of the Civil Engineering Forum
Journal of the Civil Engineering Forum (JCEF) is a four-monthly journal on Civil Engineering and Environmental related sciences. The journal was established in 1992 as Forum Teknik Sipil, a six-monthly journal published in Bahasa Indonesia, where the first publication was issued as Volume I/1 - January 1992 under the name of Forum Teknik Sipil.
Articles
10 Documents
Search results for
, issue
"Vol. 5 No. 2 (May 2019)"
:
10 Documents
clear
<![CDATA[Investigating the Impact of Airport Relocation on the Transport Network in Special Region of Yogyakarta, Indonesia ]]>
<![CDATA[Andrean Gita Fitrada]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1389.363 KB)
|
DOI: 10.22146/jcef.41575
<![CDATA[Adi Sutjipto International Airport is the airport currently operated in Special Region of Yogyakarta (SRY), located near the city centre area. SRY needs to construct a new airport due to the increase in air passengers. The proposed airport, named New Yogyakarta International Airport (NYIA) is located in the undeveloped area, away from the city centre. This study is aimed to investigate the impact of airport relocation to the road network and to assess several developments of transportation infrastructures to the new airport. The analysis was conducted by developing a transport network model using PTV Visum. The secondary data collected from the local government to develop the transport network model, including the development of origin-destination matrices and forecasting purpose. The scenarios of road infrastructures development and new rail service to the airport in 2025 are then modelled. The results showed that the road infrastructure developed can reduce the number of congested main roads from 9.47% into 5.94%. Rail service to the airport is effective to decrease the traffic congestion at two NYIA roads access and able to increase their average speed from 49.45 and 44.29 km/h into 66.45 and 62.66 km/h. ]]>
<![CDATA[Bridge Displacement Estimation using Tiltmeter Data ]]>
<![CDATA[Raka Bagus Panuntun]]>;
<![CDATA[Akhmad Aminullah]]>;
<![CDATA[Bambang Suhendro]]>;
<![CDATA[Panji Krisna Wardana]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1325.971 KB)
|
DOI: 10.22146/jcef.43670
<![CDATA[Structural Health Monitoring System (SHMS) works as an efficient platform for monitoring health condition and and deterioration of civil structures during long-term service periods. One of the sensors is currently applied to Soekarno Bridge is tiltmeter. Vertical displacement data are often required to reflect the overall response of bridge span, however the Soekarno Bridge does not have any displacement sensor. On the other hand, the displacement sensor is very costly compared to tiltmeter. A method is proposed to estimate bridge displacement using data that is collected through tiltmeter. The method is using interpolation and numerical integration to evaluate the displacement. The result shows that the result obtained from the proposed method is reliable with accuracy of displacement around 5 mm. Some recommendations for further implementation of the sensors are provided.]]>
<![CDATA[Rapid Lava Sand Filtration for Decentralized Produced Water Treatment System in Old Oil Well Wonocolo ]]>
<![CDATA[Ekha Yogafanny]]>;
<![CDATA[Ayu Utami]]>;
<![CDATA[Kristiati E. A.]]>;
<![CDATA[Wibiana W. Nandari]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (892.446 KB)
|
DOI: 10.22146/jcef.43760
<![CDATA[The Cepu Block Oil Field has been traditionally extracted since 2008 by the local community in Wonocolo. The oil well-produced gas and fluids consisted of crude oil and produced water. This oil production activity discharges high amounts of produced water. The fluids have been settled down in the sedimentation tank to gain the crude oil optimally. The remaining fluid called produced water has been discharged to the surface towards the river without any further treatment. This activity led to the deterioration of environmental quality. This study aimed to analyze the performance of produced water treatment by rapid sand filtration by measuring the degree of turbidity removal under the specific condition on a laboratory scale using lava sand. The sedimentation was conducted in 3 hours of retention time following the real field condition of the oil production process by community in one sample well. The rapid sand filtration was conducted by a fixed bed column method with 0.2 cm of grain size. The sedimentation process followed by the rapid sand filtration in produced water treatment yielded the high efficiency of turbidity removal reaching 98.65 %. The rapid sand filter also worked excellently in turbidity removal attaining 96.48 % of efficiency. These results confirmed that the sedimentation already done by the community followed by the rapid sand filtration is promising decentralized technology to be applied in a remote area such as Old Oil Wells Wonocolo regarding turbidity removal.]]>
<![CDATA[Strength Evaluation of Reinforced Concrete Structure for Regular Building due to Earthquake Load Based on Different Soil Types ]]>
<![CDATA[Jonie Tanijaya]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (742.134 KB)
|
DOI: 10.22146/jcef.43789
<![CDATA[Earthquakes are natural events caused by tectonic plate movements and it is unpredictable. Thus, the building design regulation has an important role in ensuring the Earthquake resistant structure. A commonly used method is the response spectrum method. For different soil types, the value of the design spectra may increase or decrease. Therefore this study aims to determine the effect of soil type on the strength of reinforced concrete structures, especially the building behavior and structural internal forces. Analysis results show that the increase of base-shear value of Makassar is about 34% and 103% for medium soil and soft soil condition compared to hard soil. The increase of beam negative moment is about 27% to 39% in soft soil compared to hard soil, while the value is about 8% to 14% in medium soil compared to hard soil. The increase of beam positive moment varies considerably between 8% to 50%. The increasing moment is directly proportional to the required reinforcement area of the beam. Demand capacity ratio of column has also increased about 10% to 35% for medium soil and soft soil compared to hard soil.]]>
<![CDATA[Comparison of the Use of Cement, Gypsum, and Limestone on the Improvement of Clay through Unconfined Compression Test ]]>
<![CDATA[Ika Puji Hastuty]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (992.073 KB)
|
DOI: 10.22146/jcef.43792
<![CDATA[Soil stabilization is an effort to improve soil properties by adding additives in the soil to increase the soil strength and maintain the shear strength of the soil. There are many materials which can be used as stabilizers. The materials used in this study were cement, gypsum, and limestone, then the compressive strength values were compared by using the Unconfined Compression Test (UCT). The mixture combinations used in this study were 1% to 10% of cement, gypsum, and limestone on clay by curing for 14 days. The compressive strength value resulted from the unconfined compression test on the original soil sample was 1.4 kg/cm2. The original soil was classified as moderately sensitive soil because the sensitivity value of the original soil was 2. After being stabilized with various mixtures of cement, gypsum, and limestone, soil stabilization using cement obtained the maximum unconfined compressive strength value is 3.681 kg/cm2 in the mixture of 10%. Similarly, the soil stabilization using limestone and gypsum also obtained its maximum unconfined compressive strength value in the mixture of 10% is 3.307 kg/cm2 and 2.975 kg/cm2, respectively.]]>
<![CDATA[The Effect of Initial Groundwater Table and Rainfall Wetting Towards Slope Stability (Case Study of Landslide in Tangkil Hamlet, Banaran Village, Pulung Subdistrict, Ponorogo Regency) ]]>
<![CDATA[Diana Ariesta]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (5734.291 KB)
|
DOI: 10.22146/jcef.43804
<![CDATA[Landslide is a natural phenomenon that can be controlled by a combination of various factors, such as topography, lithological condition, geological structure, water table, etc. Landslide is stated as a natural disaster if it causes casualties, direct losses and subsequent impacts of the initial destruction, as happened in Banaran Village, Ponorogo Regency. This study is aimed to examine the effects of initial groundwater table conditions and rainfall wetting on Banaran Village landslide. This study was conducted by assuming scenarios of initial groundwater table conditions. Soil parameters were obtained by testing soil samples in the laboratory. Infiltration parameters were acquired through permeability tests using the Philip-Dunne method, while areal rainfall was calculated using the Thiessen polygon method. In addition, slope stability modeling was calculated by using SLOPE/W while rainfall wetting analysis was carried out through SEEP/W. The analysis of Banaran Village landslide through these two numerical models was conducted by considering two conditions: 1) without rainfall and 2) with rainfall and infiltration. The analysis results imply that the landslide occurred in the initial groundwater table condition in scenario 3 with a safety factor of 1.008, and in a similar scenario with a safety factor of 0.973 when taking into account rainfall and infiltration. The results from SEEP/W and SLOPE/W indicate that the initial condition of the groundwater table highly influenced the decrease of the safety factor, while the wetting process did not cause a significant decrease of the safety factor.]]>
<![CDATA[The Effects of Water to Solid Ratio, Activator to Binder Ratio, and Lime Proportion on the Compressive Strength of Ambient-Cured Geopolymer Concrete ]]>
<![CDATA[Andi Arham Adam]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1613.29 KB)
|
DOI: 10.22146/jcef.43878
<![CDATA[Low calcium fly ash based Geopolymer has been proven to be one of the potential alternatives substitutes to Portland Cement not only due to its high resistance to chemical attack but also because of the vast availability of class F fly ash for raw materials. However, one of the limitations of geopolymer as the alternative binders in concrete is that the strength develops slowly under ambient condition. This paper presented the investigation of water to solid ratio, activator to binder ratio, and lime proportion on the compressive strength of ambient-cured geopolymer concrete. To develop sufficient strength at an early age, class F fly ash and slaked lime (Ca (OH)2) were used as the binder with the proportion of lime to binder of 4%, 5%, 6%, and 7%. The blended binder was activated by sodium silicate and sodium hydroxide solution with the variation of activator to binder ratio of 0.45, 0.5, 0.55, and 0.6. The water to solid ratio of 0.30, 0.31, 0.32, and 0.33 was chosen to facilitate good workability which was done by adding water to the mix. The compressive strength tests were conducted at 7, 14, and 28 days on the cylindrical concrete specimens with a dimension of 100 mm diameter and 200 mm height. The results show that the activator to binder ratio of 0.50 to 0.55, and the proportion of lime to the binder of 6% to 7% were the optimum range value. It was also found that the lower the water to cement ratio the higher the compressive strength and the water to solid ratio as low as 0.3 produced the highest compressive strength while still maintaining good workability.]]>
<![CDATA[Freezing Technology: Challenges and Prospects for Sustainable Development in Urban Infrastructure ]]>
<![CDATA[Shunji Kanie]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1510.86 KB)
|
DOI: 10.22146/jcef.43945
<![CDATA[Ground freezing has been broadly applied to construction and maintenance works of infrastructures because of its environmental friendliness. Since freezing technology represented by ground freezing can improve the strength of soil as well as its water-tightness, it becomes an essential technology for construction and maintenance of urban infrastructures where the use of space in underground has already been highly integrated. In this paper, overview of the freezing technology is introduced with some important characteristics of freezing soil for practical application. In addition, freezing technology is used for interesting works which could not be completed without freezing, and the state of the arts in freezing technology is presented. A pipe-in-pipe, now the authors are developing, is an example to utilize the potential of frozen sand, and the effect of freezing is explained with experimental results.]]>
<![CDATA[Horizontal Vibrations of Embedded Foundation in Multi-Layered Poroelastic Soils ]]>
<![CDATA[Teerapong Senjuntichai]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1168.436 KB)
|
DOI: 10.22146/jcef.45381
<![CDATA[In this paper, the dynamic response of rigid foundations of arbitrary shape embedded in multi-layered poroelastic soils subjected to time-harmonic horizontal loading is presented. The soil-structure interaction problem is investigated by employing a discretization technique and flexibility equations based on the influence functions obtained from an exact stiffness matrix scheme. The present solution scheme is verified with relevant existing solutions of rigid foundations on homogeneous elastic and poroelastic media. A selected set of numerical results are illustrated to portray the influence of various parameters, namely, frequency of excitation, poroelastic material parameters, foundation shapes, embedded depth, and the supporting soil systems, on non-dimensional horizontal compliances of rigid foundations.]]>
<![CDATA[Physical and Numerical Modelling of Tsunami Run-up on Seawall at Sloping Beach ]]>
<![CDATA[Ma'ruf Hadi Sutanto]]>
<![CDATA[ Journal of the Civil Engineering Forum Vol. 5 No. 2 (May 2019) ]]>
Publisher : <![CDATA[Department of Civil and Environmental Engineering, Faculty of Engineering, UGM ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (89.223 KB)
|
DOI: 10.22146/jcef.43800
<![CDATA[Tsunami run-up on land has a large destructive power. Further studies are deemed necessary to understand the process and characteristics of tsunami run-up in coastal areas. Seawall structures can reduce the run-up of a tsunami depending on the height of the seawall crest. Physical modeling shows that seawall may significantly reduce run-up (????) and inundation (????????). The highest reduction up to 55% where the seawall peak height is 7 cm and the water depth is 15 cm. With the same scenario in numerical modeling, the percentage reduction is 67.53%. The highest inundation (Xi) in the scenario without seawall structure is 6.081 m when the initial water depth (d0) equals to 30 cm. The result of the numerical model for the same scenario is 6.970 m. Seawall as tsunami mitigation structure is only effective when the tsunami wave is relatively low compared to the seawall height (H/ sw). Reduction percentage > 25%, with conditions that H/ sw is < 0.856 (physical model) and < 0.802 (numerical model).]]>
