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All Journal PRESUNIVE CIVIL ENGINEERING JOURNAL
Ika Bali
President University, West Java, Indonesia
Arts Civil Engineering, Building, Construction & Architecture Control & Systems Engineering

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The Effect of Steam Curing on the Early Compressive Strength of Glass Powder Concrete Ravelino Hafizh Geovenerdy; Ika Bali; Eddy Triyanto Sudjatmiko
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol. 1 No. 2 (2023)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v1i2.4690

Abstract

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.
Analysis of Ultimate Bearing Capacity of Bore Pile Foundation in High-Rise Building at Pulomas, East Jakarta Nathanael Edward Wisan; Ika Bali; Eddy Triyanto Sudjatmiko
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol. 1 No. 2 (2023)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v1i2.4704

Abstract

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.
Mechanical Properties of Concrete with Recycled Bottle Glass Powder Substitute I Made Tatanka; Ika Bali; Eddy Sudjatmiko
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol. 2 No. 1 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i1.5131

Abstract

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.
Compressive Strength of Concrete Containing Merapi Cold Lava Sand Theo Trichius Cilvin Peden Bungalolon; Ika Bali
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol. 2 No. 1 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i1.5147

Abstract

Reports from the literature state that Merapi sand is a good material as a filler in concrete to replace some of the fine aggregate because it has a high content of silica (SiO2) and the sharp edges of the silica form angular particles. The potential function of Merapi sand as a filler and its use as a waste material prompted this study to be carried out. The objective of this study is to determine the potential of Merapi Sand in terms of concrete compressive strength as an effective replacement for local sand in the Cikarang area. In this study, Merapi cold lava was crushed to the size of fine aggregate by passing a 2.26 mm sieve. The percentages of Merapi sand used as a partial substitute for local sand are 10%, 20%, and 30%. The results of this study show that Merapi sand concrete (MSC) 30% at age of 7 days and 28 days provides the highest increase in compressive strength of 17.4% and 15.8% respectively compared to normal concrete (NC). The addition of a percentage of Merapi sand as a partial replacement for local sand tends to increase the compressive strength of the concrete. Based on this study, Merapi sand has the potential to be used as a partial replacement for local sand in increasing the compressive strength of concrete and reducing cold lava waste.
Analysis of Base Shear and Story Drift in the Low-Rise RC Structure Phil Benson Bong; Ika Bali
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol. 2 No. 1 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i1.5256

Abstract

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.
Effects of Modeling on the Behavior of Prestressed Concrete System Akbar Putro Adjie; Binsar Hariandja; Ika Bali
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol. 2 No. 1 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i1.5258

Abstract

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.
Compressive Strength of Concrete with Malang Sand as Fine Aggregate Substitute Muhammad Iqbal Paramatatya Satyawan Santoso; Ika Bali
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol. 2 No. 2 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i2.5463

Abstract

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.
Comparative Study of Molasses and Chemical Retarders on Concrete Compressive Strength and Setting Time Ika Bali; Imanuel Matondang
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol. 3 No. 2 (2025)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v3i2.6324

Abstract

Concrete damage is often linked to reduced structural strength due to rapid setting, which complicates compaction and placement. Chemical retarders are commonly used to address this issue but are costly and environmentally unfriendly. Molasses, a by-product of the sugar industry containing sucrose, glucose, and fructose, offers a potentially eco-friendly and economical alternative. This study compares the effects of molasses and a chemical retarder (Plastiment VZ) at dosages of 0.2–0.4% on concrete compressive strength and initial setting time. Results show that 0.35% molasses increased compressive strength to 25.48 MPa compared to 19.53 MPa in normal concrete, though strength declined at 0.4%. Plastiment VZ showed more consistent gains, reaching 25.90 MPa at 0.4%. For setting time, molasses delayed hydration to 435 minutes (0.4%), while Plastiment VZ extended it further to 690 minutes (0.4%). Thus, molasses can serve as an alternative retarder, though Plastiment VZ provides more stable effects.
Strength Properties of Cellular Lightweight Concrete Bricks Using Sorong Sand Daniel Khen Titarsole; Ika Bali; Eddy Triyanto Sudjatmiko
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol. 3 No. 2 (2025)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v3i2.6325

Abstract

Infrastructure growth in Sorong requires innovative construction materials that are efficient, durable, and environmentally friendly. Cellular Lightweight Concrete (CLC) bricks are proposed as an alternative to conventional red bricks. This study investigates the compressive strength and density of CLC bricks made with Sorong sand, using Cikarang sand as a comparison. Laboratory trials were conducted to develop a mix design with a target density of 800 kg/m³. The results show that CLC bricks using Sorong sand reached densities of 821.73–867.16 kg/m³ and compressive strengths of 0.81–1.11 MPa at curing ages of 3, 7, and 14 days. These values were slightly lower than those of Cikarang-sand bricks, which achieved densities of 831.11–879.01 kg/m³ and strengths of 0.81–1.26 MPa. The reduced strength of Sorong-sand bricks is related to their lower density. Nonetheless, testing confirmed that Sorong sand meets fine aggregate specifications, making it suitable for CLC brick production and supporting local infrastructure development.
Co-Authors Akbar Putro Adjie Binsar Hariandja Daniel Khen Titarsole Eddy Sudjatmiko Eddy Triyanto Sudjatmiko Eddy Triyanto Sudjatmiko I Made Tatanka Imanuel Matondang Muhammad Iqbal Paramatatya Satyawan Santoso Nathanael Edward Wisan Phil Benson Bong Ravelino Hafizh Geovenerdy Theo Trichius Cilvin Peden Bungalolon