Blog – Page 9 – 8th ICSBE 2025

PERFORMANCE AND DESIGN OF THE BIFURCATION STRUCTURE AT TOILI RIVER

December 13, 2023/0 Comments/in Uncategorized/by icsbeuii

I W Sutapa ^[1]^*

¹Department of Civil Engineering, Tadulaku University, Central Sulawesi, 94118, Indonesia.

[1]^* Corresponding author: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol4.art2

ABSTRACT

One of The flooding of June 18, 2019 caused damage to the check dam structure on the Toili River branch, causing flooding during the rainy season and water being unable to flow into the Mansahang River which irrigates the Toili irrigation network and the Moilong irrigation network during the dry season. The purpose of this study is to design a bifurcation structure by modeling river hydraulics so that water can be supplied to the Moilong Irrigation Area and Toili Irrigation Area and to provide a sense of security from the threat of water damage. The data needed are: hydroclimatological data, watersheds, and river situation maps. Based on the results of the HEC-RAS analysis and simulation, the bifurcation structure of alternative-2 was chosen. This condition is very satisfying, where during floods the water can flow proportionally to the river branches and during the dry season the water needs are met.

Keywords: Bifurcation Structure, Hydraulics Modeling, Toili River

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The Evaluation Of Moisture Sensitivity Of Ethylene-Vinyl Acetate (Eva) Modified Hot And Warm Mix Asphalt Mastic

November 27, 2023/0 Comments/in Prosiding 2022/by icsbeuii

C G Daniel^[1]^*, J Widjajakususma¹, M I Azrena¹

¹Department of Civil Engineering, Pelita Harapan University, Indonesia

DOI: https://doi.org/10.20885/icsbe.vol4.art1

ABSTRACT

This study aims to evaluate the effect of applying ethylene-vinyl acetate (EVA) using the dry mixing method on the mechanical properties of the HMA and WMA mixtures on the mastic scale against moisture damage given various polymer contents; 2%, 5%, 6%, and 8% of bitumen weight. The tensile strength of dry hot and warm polymer-modified bituminous mastic was improved by 40% and 100% relative to the control mix, respectively, from the dosage of 0.6% EVA. Moreover, the fracture energy depicted a similar trend, with the gaps becoming 34% and 136%. Both parameters have shown increasing increment up to the dosage of 6%, beyond which the values declined. In contrast, the tensile strength ratio (TSR) and fracture energy ratio of the hot mastic mix was higher than the warm mix, while the increment of the ratio to control mix was less than that of the dry specimens. This indicates an insignificant influence of polymer on the adhesion bonding in the mastic upon being subjected to the moisture effect, especially in the warm mix. However, its impact on hot asphalt mastic specimens was still acceptable. The dosage of 6% can be depicted to give the best outcome in this study.

Keywords: Moisture Sensitivity, Ethylene-Vinyl Acetate, Hot Mix, Warm Mix, Asphalt Mastic

[1]^* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol4.art1

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[53] “SUPERPLAST POLYMER COMPOUND HIGH PERFORMANCE POLYMER MODIFIED ASPHALT (PMA).”

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Acknowledgments

The authors wish to acknowledge the support from Pelita Harapan University for this project under the project code of 082/LPPM-UPH/II/2021 and the support from PT. Enceha Pacific with the Superplast polymer material for this research.

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PERFORMANCE AND DESIGN OF THE BIFURCATION STRUCTURE AT TOILI RIVER

The Evaluation Of Moisture Sensitivity Of Ethylene-Vinyl Acetate (Eva) Modified Hot And Warm Mix Asphalt Mastic

Prof. NG How Yong

Prof. Frank Eckardt

Prof. M. Eren Uckan

Prof. Noor Cholis Idham

Faculty of Civil Engineering and Planning, Universitas Islam Indonesia

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