Pengolahan limbah plastik menjadi agregat kasar alternatif sebagai bahan campuran beton menjadi salah satu solusi di bidang ketekniksipilan dalam upaya meminimalisir semakin banyaknya limbah plastik. Penelitian ini menggunakan jenis plastik adalah Polyethylene Terephtalate (PET) yang biasa ditemukan pada botol air mineral. Variasi penambahan agregat plastik (AP) terhadap agregat alam (AA) adalah 1) AP = 0% dan AA = 100%, 2) AP = 50% dan AA = 50%, 3) AP = 75% dan AA = 25%, dan 4) AP = 100% dan AA = 0%. Variasi gradasi agregat dilakukan 1) #19 mm = 10%, #9,5 mm = 40%, dan #4,75 mm = 50%, 2) #19 mm = 10%, #9,5 mm = 35 %, dan #4,75 mm = 55%, dan 3) #19 mm = 5%, #9,5 mm = 45%, dan #4,75 mm = 50%. Berdasarkan hasil uji kuat tekan dan berat isi beton ringan yang menghasilkan campuran terbaik adalah variasi campuran AP=75% dan AA = 25% dan gradasi campuran #19 mm = 10%, #9,5 mm = 35 %, dan #4,75 mm = 55%. Kuat tekan sebesar 11,1 MPa dan berat isi sebesar 1687,9 kg/m3. Benda uji memenuhi persyaratan berat isi tetapi tidak memenuhi standar kuat tekan untuk beton ringan struktural. Sedangkan penelitian yang dilakukan oleh Supratikno dan Ratnanik (2019) dengan menggunakan material yang sama menghasilkan nilai kuat tekan sebesar 10,14 Mpa dan berat isi sebesar 2260 Kg/m3. Data kuat tekan dan berat isi mengindikasikan pada penelitian ini terjadi peningkatan kualitas benda uji yang dihasilkan terhadap penelitian sebelumnya yang dilakukan Supratikno dan Ratnanik (2019).
Over the last few decades, waste tires have piled to an explicitly large number, posing a serious environmental threat in the worldwide. By reusing waste tires in concrete mixes in the form of crumb rubber, it was reported that crumb rubber improved concrete energy absorption, delayed the deformation time, and prevented sudden failure, which could enhance the rigid pavement performance. However, crumb rubber tends to reduce concrete strength primarily because of a lack of bonding between the smooth rubber surfaces and cement paste, resulting in a tiny gap in the concrete ITZ. The decrease in strength caused by crumb rubber can be solved by utilizing pozzolanic materials such as nano-silica, fly ash, and rice husk ash as additive materials or partial replacement of cement to improve the concrete pore structure through pozzolanic reaction and to enhance the adhesion between crumb rubber and cement. It was shown that pozzolanic materials, as mentioned above, managed to improve the strength of crumb rubber concrete with nano-silica showed the best effectiveness compared to fly ash and rice husk ash in creating high-strength crumb rubber concrete for application as a rigid pavement material.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.