Karakterisasi dan Analisis Recycled High Density Polyethylene sebagai Pengganti Material Acrylonitrile Butadine Styrene pada Bekisting Beton

Ilayya, Muhammad Irham (2026) Karakterisasi dan Analisis Recycled High Density Polyethylene sebagai Pengganti Material Acrylonitrile Butadine Styrene pada Bekisting Beton. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5007221022-Undergraduate_Thesis.pdf Restricted to Repository staff only Download (7MB) | Request a copy

Abstract

Penelitian ini mengkaji rekayasa dan karakterisasi recycled High Density Polyethylene (rHDPE) sebagai kandidat pengganti Acrylonitrile Butadiene Styrene (ABS) pada aplikasi bekisting beton. Karakterisasi XRD menunjukkan derajat kristalinitas ABS sebesar 4,57% (amorf), HDPE murni 51,74%, rHDPE 35,88%, dan rHDPE + filler CaCO₃/Stearic Acid meningkat menjadi 55,92%, atau 20% lebih tinggi dibandingkan HDPE murni. Hasil TGA menunjukkan temperature onset degradasi termal berturut-turut 188,72°C (ABS), 235,27°C (HDPE murni), 230,91°C (rHDPE), dan 277,28°C (rHDPE + filler), dengan safety factor thermal tertinggi pada rHDPE + filler sebesar 3,26 terhadap suhu operasi bekisting 85°C. Pada pengujian tarik, ABS memiliki modulus elastisitas 0,43 GPa dan yield strength 11,81 MPa namun elongasi patah hanya 4,68%, sedangkan HDPE murni, rHDPE, dan rHDPE + filler masing-masing menghasilkan yield strength 4,53 MPa, 3,91 MPa, dan 5,52 MPa dengan elongasi patah 6,00%, 13,00%, dan 7,03%. Pengujian bending menunjukkan flexural strength tertinggi pada HDPE murni (283,20 MPa), diikuti ABS (81,23 MPa), rHDPE + filler (75,46 MPa), dan rHDPE (57,26 MPa). Secara keseluruhan, penambahan filler terbukti memperbaiki sifat fisik dan mekanik rHDPE yang terdegradasi akibat proses daur ulang, meskipun performa lenturnya masih di bawah HDPE murni akibat void dan shrinkage pada proses manufaktur, sehingga rHDPE + filler berpotensi menjadi alternatif material bekisting beton yang lebih ramah lingkungan.
================================================================================================================================
This study investigates the engineering and characterization of recycled High Density Polyethylene (rHDPE) as a candidate substitute for Acrylonitrile Butadiene Styrene (ABS) in concrete formwork applications. XRD characterization shows crystallinity degrees of 4.57% for ABS (amorphous), 51.74% for virgin HDPE, 35.88% for rHDPE, and an increase to 55.92% for rHDPE + CaCO₃/Stearic Acid filler, which is 20% higher than virgin HDPE. TGA results indicate thermal degradation onset temperatures of 188.72°C (ABS), 235.27°C (virgin HDPE), 230.91°C (rHDPE), and 277.28°C (rHDPE + filler), with the highest thermal safety factor obtained by rHDPE + filler at 3.26 relative to the 85°C formwork operating temperature. Tensile testing shows that ABS has an elastic modulus of 0.43 GPa and yield strength of 11.81 MPa but only 4.68% elongation at break, while virgin HDPE, rHDPE, and rHDPE + filler produced yield strengths of 4.53 MPa, 3.91 MPa, and 5.52 MPa with elongation at break of 6.00%, 13.00%, and 7.03%, respectively. Bending tests reveal the highest flexural strength in virgin HDPE (283.20 MPa), followed by ABS (81.23 MPa), rHDPE + filler (75.46 MPa), and rHDPE (57.26 MPa). Overall, filler addition is proven to improve the physical and mechanical properties of rHDPE degraded by the recycling process, although its flexural performance remains below virgin HDPE due to voids and shrinkage from the manufacturing process, indicating that rHDPE + filler holds potential as a more environmentally friendly alternative material for concrete formwork.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Bekisting beton, thermoplastic, filler, sifat fisik, sifat mekanik,Concrete formwork, thermoplastic, filler, physical properties, mechanical properties
Subjects:	Q Science Q Science > QC Physics > QC173.4.C63 Composite materials
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Irham Ilayya
Date Deposited:	04 Aug 2026 08:03
Last Modified:	04 Aug 2026 08:03
URI:	http://repository.its.ac.id/id/eprint/143367

Actions (login required)

View Item