PENGARUH VARIASI PERBANDINGAN KOMPOSISI SILIKA DENGAN ASPAL (65 35 wt%; 70 : 30 wt%; dan 75 : 25 wt%) TERHADAP STRUKTUR, SIFAT TERMAL,FISIS, DAN MEKANIK SILIKA ASPAL
| Main Author: | Dyah Ayu Kusumaningati, 1617041071 |
|---|---|
| Format: | Bachelors NonPeerReviewed Book Report |
| Terbitan: |
FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM
, 2020
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| Subjects: | |
| Online Access: |
http://digilib.unila.ac.id/65820/1/ABSTRAK.pdf http://digilib.unila.ac.id/65820/2/SKRIPSI%20TANPA%20BAB%20PEMBAHASAN.pdf http://digilib.unila.ac.id/65820/3/SKRIPSI%20FULL.pdf http://digilib.unila.ac.id/65820/ |
Daftar Isi:
- Komposit silika aspal menggunakan perbandingan massa silika dan aspal yaitu 65 : 35 wt%; 70 : 30 wt%; dan 75 : 25 wt% dipanaskan pada suhu 160 ̊C selama 3 jam. Karakteristik termal dan struktur fasa dianalisis menggunakan Differential Thermal Analysis/Thermo Gravimetrical Analysis (DTA/TGA) dan X-Ray Diffraction (XRD). Hasil analisis DTA/TGA menunjukkan bahwa penambahan silika dan pengurangan aspal mengakibatkan terjadinya penurunan massa, suhu awal (on set), dan suhu maksimal. Selain itu, terjadi peningkatan suhu lembah endotermik serta suhu puncak eksotermik. Hasil analisis XRD menunjukkan adanya silika amorf direntang 2θ = 19 – 24 ̊ dan karbon amorf pada rentang 2θ = 15 – 26 ̊. Penambahan silika dan pengurangan aspal mengakibatkan terjadinya penurunan nilai daya serap air sedangkan kuat tekan mengalami peningkatan. Kata kunci: aspal, daya serap air, karakteristik termal, kuat tekan, silika, struktur fasa. ABSTRACT Asphalt silica composites using a mass ratio of silica and asphalt with a ratio of 65: 35 wt%; 70: 30 wt%; and 75: 25 wt% heated at a temperature of 160 ̊C for 3 hours. Thermal characteristics and phase structure were analyzed using Differential Thermal Analysis / Thermo Gravimetrical Analysis (DTA / TGA) and X-Ray Diffraction (XRD). The results of the DTA / TGA analysis show that the addition of silica and reduction of asphalt resulted in a decrease in mass, initial temperature (on set), and maximum temperature. In addition, there was an increase in the temperature of the endothermic valley and the temperature of the exothermic peak. XRD analysis results showed the presence of amorphous silica in the range 2 = 19-24 ̊ and amorphous carbon in the range 2θ = 15-26 ̊. The addition of silica and reduction of asphalt resulted in a decrease in the value of water absorption while the compressive strength increased. Keywords: asphalt, compressive strength, phase structure, silica, thermal characteristics, water absorption.