ARSYAD, MUHAMMAD DICKY FAUZI (2025) PEMANFAATAN LIMBAH CACAHAN PLASTIK HDPE (HIGH DENSITY POLYETHYLENE) SUBSTITUSI AGREGAT KASAR DAN FLY ASH SUBTITUSI SEMEN TERHADAP KUAT TEKAN BETON. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
Concrete is a composite material composed of aggregates, cement, and water. Exploitation of natural aggregates and accumulation of plastic and fly ash waste pose significant environmental concerns. Using shredded High-Density Polyethylene (HDPE) as partial replacement of coarse aggregate and fly ash as partial cement replacement can reduce natural resource consumption and mitigate industrial waste generation. This study evaluates the effect of partial replacement of coarse aggregate with HDPE (0%, 5%, 7%, 10%) and partial replacement of cement with fly ash (0% and 20%) on the compressive strength of concrete designed for 30 MPa. Concrete specimens representing each mix variation were cast, cured under standard conditions, and tested for compressive strength at standard test age. Mean compressive strengths of each mix were compared to the control mixture to assess the influence of HDPE and fly ash substitutions. The control concrete (without waste) exhibited an average compressive strength of 41.46 MPa, exceeding the target. Addition of HDPE generally reduced compressive strength; however, the mix containing 5% HDPE combined with 20% fly ash produced a stabilized strength above the target, with an average of 33.12 MPa. Higher HDPE substitution levels produced more pronounced strength reductions. Partial replacement of coarse aggregate by HDPE tends to decrease compressive strength, while a combination of low HDPE substitution (5%) and moderate fly ash replacement (20%) can yield concrete meeting the 30 MPa design strength. Further optimization, statistical analysis, and long-term durability testing are recommended prior to field implementation. Keywords : Sustainable concrete; HDPE; Fly Ash; Aggregate; Compressive strength Beton merupakan material yang umumnya terdiri dari kerikil, pasir, semen dan air. Eksploitasi agregat alam dan akumulasi limbah plastik serta fly ash menimbulkan masalah lingkungan serius. Pemanfaatan limbah High-Density Polyethylene (HDPE) sebagai pengganti sebagian kerikil dan Fly Ash sebagai pengganti sebagian semen menawarkan solusi ganda yaitu mengurangi penggunaan sumber daya alam sekaligus mengurangi limbah industri. Penelitian ini mengganti kerikil dengan variasi 0%, 5%, 7% dan 10% limbah cacahan HDPE kemudian mengganti semen dengan variasi 0% dan 20% limbah abu terbang dengan mutu rencana 30 MPa. Pada penelitian ini dilakukan uji kuat tekan beton pada masing-masing variasi campuran. Hasil uji menunjukan bahwa Beton normal tanpa campuran limbah dapat melampaui mutu rencana yaitu sebesar 41,46 MPa kemudian mengalami penurunan saat dicampur dengan limbah HDPE dan abu terbang. Hasil uji kuat tekan menunjukan bahwa penambahan limbah HDPE sebanyak 5% lebih dari kerikil dapat menurunkan kuat tekan beton namun dapat stabil saat penambahan 20% abu terbang sebagai pengganti semen sehingga mutu rencana dapat tercapai dan dapat dilihat dari variasi campuran 5% HDPE dan 20% Fly Ash yaitu sebesar 33,12 MPa. Kata Kunci : Beton Ramah Lingkungan; Kuat Tekan; HDPE; Fly Ash
| Item Type: | Thesis (S1) |
|---|---|
| Call Number CD: | FT/SIP. 25 151 |
| NIM/NIDN Creators: | 41122110080 |
| Uncontrolled Keywords: | Beton Ramah Lingkungan; Kuat Tekan; HDPE; Fly Ash |
| Subjects: | 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 624 Civil Engineering/Teknik Sipil 600 Technology/Teknologi > 690 Buildings/Teknik Bangunan > 691 Building Material/Material Bangunan 600 Technology/Teknologi > 690 Buildings/Teknik Bangunan > 693 Construction In Specific Types of Materials and For Specific Purposes/Konstruksi Dalam Jenis Bahan Khusus dan Untuk Tujuan Khusus > 693.5 Concrete/Beton |
| Divisions: | Fakultas Teknik > Teknik Sipil |
| Depositing User: | khalimah |
| Date Deposited: | 30 Sep 2025 06:47 |
| Last Modified: | 30 Sep 2025 06:47 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/98606 |
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