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<![CDATA[Compressive Strength of Concrete Containing Recycled Glass Powder ]]>
<![CDATA[Nugraha, Bimantara Putra]]>;
<![CDATA[Sudjatmiko, Eddy Triyanto]]>;
<![CDATA[Bali, Ika]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 1, No 1 (2023) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v1i1.4242
<![CDATA[Glass bottle waste takes a million years to decompose. Recycling is the best option to solve this problem. Onealternative is to use recycled glass in the form of powder as a material for making concrete. This study proposes theuse of recycled glass powder as a concrete material to partially substitute fine aggregate. This study aims todetermine the effect of glass powder as a partial substitute for fine aggregate on the compressive strength of concrete.Partial substitution of fine aggregate was selected with a percentage of 5%, 10%, and 15%. Standard cylindricalspecimens aged 28 days used in compressive strength testing in this study. Then, the test results of concretecontaining recycled glass powder compared to ordinary concrete. The test results show that the compressive strengthof concrete containing 15% recycled glass powder gives an average compressive strength of 35.57 MPa which isslightly higher than the compressive strength of normal concrete of 35.10 MPa. This study found that the use of glasspowder as a substitute for fine aggregate can be used as a substitute for normal concrete in terms of compressivestrength and reduce glass waste.]]>
<![CDATA[On-Site Earthquake Early Warning System as an Alternative Earthquake Mitigation Solution in Indonesia ]]>
<![CDATA[Bali, Ika]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 1, No 1 (2023) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v1i1.4245
<![CDATA[The Banten earthquake, which had a magnitude of 6.6 on January 14, 2022, damaged 3,078 houses. Thatnumber consisted of 395 heavily damaged units, 692 moderately damaged units and 1,991 lightly damaged units(Tempo.co, 2022). The Banten earthquake was a strong earthquake where the magnitude was greater than a scale of5. Damage to houses caused by the earthquake occurred in most single-story houses or low-rise buildings. Given thelarge number of one-story houses that are damaged every time a major earthquake occurs in Indonesia, there needs tobe appropriate mitigation measures to reduce the risk of earthquake disasters, especially for human casualties. AnOn-site Earthquake Early Warning System (On-site EEWS) can be an alternative in reducing victims of the disaster.This earthquake early warning system has sensors that are installed on the site of building houses and can predictstrong earthquake waves that are destructive in nature (S/Secondary Waves) through P/Primary Waves that arriveearly in about 10-20 seconds. This time is sufficient for evacuation for the occupants of a one-story house if the earlywarning alarm is properly responded to. This early warning radius can reach 20 km from the on-site EEWS locationconsidering that this area has relatively the same vibration effect. Currently, Indonesia through the BMKG isdeveloping EEWS as a part of the existing earthquake mitigation system. The purpose of this study is to describe theapplication of an on-site earthquake early warning system as an alternative solution for earthquake mitigation inIndonesia. This study evaluates several EEWS applications in the literature to find the best alternative to be appliedin Indonesia. The critical factors for on-site implementation of the EEWS discussed in this paper are compared withthe Taiwan regional EEWS. Based on the existing validation, the on-site EEWS has an 80% accuracy rate inpredicting the intensity level of a strong earthquake, capable to automatically send an alarm message within 3seconds and providing a warning time of at least 8 seconds before a destructive peak S wave arrives.]]>
<![CDATA[The Effect of Steam Curing on the Early Compressive Strength of Glass Powder Concrete ]]>
<![CDATA[Geovenerdy, Ravelino Hafizh]]>;
<![CDATA[Bali, Ika]]>;
<![CDATA[Sudjatmiko, Eddy Triyanto]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 1, No 2 (2023) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v1i2.4690
<![CDATA[Glass bottle waste is non-biodegradable and concerns about its impact on the environment. One alternative is to use recycled glass bottle waste in a form of glass powder as a partial replacement for fine aggregate in concrete. This study compared the glass powder concrete containing 20% glass powder as a partial replacement for fine aggregate treated by steam curing to the normal concrete treated by immersion curing. To obtain a higher early strength, the glass powder concrete will be treated with steam curing method for total duration of 9 hours. The test results showed that glass powder concrete treated with steam curing experienced a significant increase of 40.7% in compressive strength at 1 day of age with a compressive strength of 7.84 MPa compared to normal concrete of 5.56 MPa, an increase of 57.0% at 3 days of age with a compressive strength of 16.88 MPa compared to normal concrete of 10.75 MPa, and an increase of 14.0% at 7 days of age with a compressive strength of 23.86 MPa compared to normal concrete of 20.94 MPa. The results of this study indicated that steam curing has the effect of increasing the early compressive strength of concrete at the age of 1, 3 and 7 days. In addition, the use of 20% glass powder as a partial replacement for fine aggregate can contribute to the utilization of non-biodegradable glass bottle waste.]]>
<![CDATA[Analysis of Ultimate Bearing Capacity of Bore Pile Foundation in High-Rise Building at Pulomas, East Jakarta ]]>
<![CDATA[Wisan, Nathanael Edward]]>;
<![CDATA[Bali, Ika]]>;
<![CDATA[Sudjatmiko, Eddy Triyanto]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 1, No 2 (2023) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v1i2.4704
<![CDATA[Soil condition at the Pulomas tower project site with a water level of 17 m below the ground and the hard soil at ground depth of 18 – 22 m, as well as the project location surrounded by houses and office buildings made the choice of bore pile as the foundation in this project. This condition is the background to the need for a bore pile capacity analysis in this tower project. The objective of this study is to analyze the bore pile capacity which is based on Standard Penetration Test (SPT) and Cone Penetration Test (CPT) and to be compared to the interpretation result of static loading test at a tower project location in East Jakarta. The ultimate bearing capacity of bore pile foundation was calculated using Meyerhof method and Reese & Wright method, and static loading test using Chin method. This study indicated that the ultimate bearing capacity using Reese & Wright method is closer to the interpretation result of static loading test from Chin method compared to Meyerhof method.]]>
<![CDATA[Mechanical Properties of Concrete with Recycled Bottle Glass Powder Substitute ]]>
<![CDATA[Tatanka, I Made]]>;
<![CDATA[Bali, Ika]]>;
<![CDATA[Sudjatmiko, Eddy]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 1 (2024) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v2i1.5131
<![CDATA[Concrete is a material that is widely used in the construction of structural buildings. One of the influential factors for obtaining high quality concrete is the aggregate gradation. If the aggregate gradation has a small size and varies, it can reduce the porosity of the concrete so that the concrete becomes denser which makes the quality of the concrete high. In order to use aggregates with fine gradations, this study proposes glass powder derived from glass bottle waste as a partial replacement for fine aggregates. The glass powder used is in the sizes about 0.150 mm - 0.075 mm. Then, the maximum size of 15 mm for the coarse aggregate and the fine aggregate with the gradation of zone 4 (fine sand) were used for the concrete mix. The purpose of this study is to investigate the mechanical properties of concrete i.e. the compressive and split tensile strength of concrete with glass powder as a partial substitution of fine aggregates with a percentage of 10%, 15%, and 20% at a concrete age of 28 days. This study uses the testing method that refers to ASTM standard. From the test results, it was found that the compressive strength of concrete with 20% glass powder variation (GPC 20%) increased by 11.32% with a value of 38.97MPa compared to the compressive strength of normal concrete (NC) with a value of 35.01 MPa. For the split tensile strength, the concrete with a 20% glass powder variation increased by 15% with a value of 2.71 MPa compared to the split tensile strength of normal concrete with a value of 2.36 MPa. The results showed that the use of glass powder as a partial replacement for fine aggregate in this study was reasonably good to improve its mechanical properties.]]>
<![CDATA[Analysis of Base Shear and Story Drift in the Low-Rise RC Structure ]]>
<![CDATA[Bong, Phil Benson]]>;
<![CDATA[Bali, Ika]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 1 (2024) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v2i1.5256
<![CDATA[Earthquakes frequently occur in Indonesia because it is an earthquake-prone area. Due to lateral load from an earthquake can cause a weakly constructed building to collapse. Designers often only consider tall buildings in designing earthquake-resistant building structures but ignore earthquake-resistant designing for low-rise buildings. This study focuses on the analysis of earthquake resistant structures with a case study of low-rise buildings in the form of a 3-story reinforced concrete (RC) building in the South Jakarta area. The objective of the study is to analyze the base shear and story drift of the structure due to lateral or earthquake loads. The structure is a reinforced concrete with the concrete compressive strength of  = 30 MPa and longitudinal reinforcement of  = 420 MPa and stirrups of   = 280 MPa. This study uses equivalent static analysis manually and using ETABS 20.1.0 application. The results showed that three story buildings analyzed using equivalent static analysis method and using ETABS 20.1.0 application had almost the same results on horizontal forces with manual result of 1680.97 kN and ETABS of 1648.46 kN. The elastic story deflection and inelastic story drift in this study are still within safe limits because it is below the drift limit.]]>
<![CDATA[Effects of Modeling on the Behavior of Prestressed Concrete System ]]>
<![CDATA[Adjie, Akbar Putro]]>;
<![CDATA[Hariandja, Binsar]]>;
<![CDATA[Bali, Ika]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 1 (2024) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v2i1.5258
<![CDATA[This study deals with the modeling of prestressed concrete components and its effects on the behavior of the structure. Two cases are presented, i.e., simple vs continuous beams, and crossing of prestressed and reinforced concrete beams. Based on the findings in this study, the modeling has significant effects in prestressed concrete behavior. The effects might create serious problems on structural safety if not addressed properly in the analysis and design of prestressed concrete systems. As much as possible, it is best to design prestressed components as free-standing statically determinate systems, thereby avoiding the possibility of additional secondary stresses that may reduce the capacity of the designed member. To achieve the above goals, it is best to use a precast concrete system to build a prestressed concrete system.]]>
<![CDATA[Comparative Structural Seismic Performance of a 10-Story Commercial Building Using Lightweight Precast Concrete Panels and Lightweight Brick Wall Systems ]]>
<![CDATA[Tanjung, Naisha Elvira]]>;
<![CDATA[Imanuel, Ivan]]>;
<![CDATA[Bali, Ika]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 3, No 2 (2025) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v3i2.6323
<![CDATA[This study presents a comparative seismic performance analysis of a 10-story commercial building in North Jakarta, an area characterized by high seismicity and challenging geotechnical conditions. Two identical structural models were analyzed using ETABS v2022: one using a lightweight precast concrete panel system (JOE Green X3) and the other using a conventional Autoclaved Aerated Concrete (AAC) lightweight brick system. The aim is to compare the seismic structural performance of the analysis, based on the response spectrum method in accordance with SNI 1726:2019, revealed that the precast concrete panel system, was 14.4% lighter than the AAC lightweight bricks system when accounting for its full installed weight, including plaster and bracing columns. It resulted in a shorter fundamental period (0.412 s) compared to 0.453 s of the AAC lightweight brick system. However, the seismic base shear forces are nearly identical due to compensating effects in the site-specific response spectrum. Although both systems meet the deflection limits mandated by regulations, their performance is direction-dependent. This study concludes that the substantial reduction in total mass of the precast panel system provides a shorter vibration period but comparable seismic performance to the AAC lightweight brick system.]]>
<![CDATA[Compressive Strength of Concrete with Malang Sand as Fine Aggregate Substitute ]]>
<![CDATA[Santoso, Muhammad Iqbal Paramatatya Satyawan]]>;
<![CDATA[Bali, Ika]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 2 (2024) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v2i2.5463
<![CDATA[Malang sand has small and rough grains with a sharp surface, it can easily absorb water and adhere to cement. It is very suitable for use as fine aggregate in concrete to improve the quality and durability of concrete. As sand from a volcano, Malang sand has similar characteristics to sand from cold lava resulting from volcanic eruptions. In another study, concrete with sand from cold lava of Sinabung volcano was reported to have the highest compressive strength in a mixture variation of 60-70% of Sinabung sand at the age of 14 days. This study focuses on investigating the compressive strength of concrete with the addition of Malang sand as partly replacement of 50-70% of the fine aggregate material. The concrete design method uses practical guidelines for designing concrete mixes according to Indonesian standard (SNI), and for testing the compressive strength of concrete using ASTM C-39. The percentage of sand used in this study is 50%, 60%, and 70% as a substitute for fine aggregate with a concrete age of 28 days. Based on the study results, the maximum average compressive strength is achieved for the concrete with Malang sand of 70% (MSC 70%) with a compressive strength of 31.89 MPa or an increase 4.32% compared to normal concrete. In this study indicated that the trend of compressive strength is increase with the increase of Malang sand content in the concrete.]]>
<![CDATA[Construction Cost Reduction in Design of Prestressed Concrete Structural System ]]>
<![CDATA[Surbakti, Michelia Esteruli Instia]]>;
<![CDATA[Hariandja, Binsar]]>;
<![CDATA[Bali, Ika]]>
<![CDATA[ PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 2 (2024) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/pcej.v2i2.5483
<![CDATA[Concrete material has moderately strong compressive strength, but relatively weak tensile strength. To overcome this problem, three kinds of systems can be applied, namely reinforced concrete system, composite concrete system, and prestressed concrete system. In a prestressed concrete system, a compressive force is applied to annihilate the tension region in the concrete section. Compared to reinforced concrete, prestressed concrete requires a smaller section of concrete, since the whole cross section is in compression and active. However, prestressing concrete needs the use of high strength steel wire which is extremely costly. The use of prestressing concrete may be carried out using minimization on the use of such expensive high strength steel. In this research, two methods of minimization of the use of high strength steel, which are the shifting of the support of the beam to get the smaller field moment. The other method is to reshape the concrete section to have a higher moment of inertia. It is found out that the two methods perform well in the minimization process of construction cost of the prestressing concrete beam.]]>
