Konstruksi jalan di daerah pesisir umunya masih menggunakan perkerasan lentur. Perkerasan ini seringkali mengalami kerusakan akibat adanya luapan banjir air laut pasang (rob). Genangan rob terbukti dapat mengurangi daya ikat antara aspal dengan agregat, sehingga terjadi pengelupasan aspal yang dapat memperpendek umur jalan. Oleh karenanya perkerasan kaku dapat dijadikan solusi untuk masalah ini. Akan tetapi penggunaan semen dalam perkerasan kaku dianggap kurang ramah lingkungan karena melepaskan banyak karbon dioksida (CO2) dalam produksinya. Oleh karena itu beton geopolimer berbahan dasar abu terbang bisa dijadikan salah satu solusi yang ramah lingkungan karena bahan yang digunakan berasal dari limbah pembakaran batubara. Pada penelitian ini dilakukan uji kuat tekan terhadap 9 benda uji silinder berukuran tinggi 30cm dan diameter 15cm dengan usia beton 28 hari dalam perendaman air laut dan air pdam. Dalam pembuatan benda uji menggunakan perbandingan agregat dengan binder 75:25, 70:30 dan 65:45, yang masing-masing terdiri dari tiga benda uji setiap perbadingannya. Perbandingan aktivator yang digunakan adalah 1:2, 3:2 dan 5:2. Aktivator yang digunakan yaitu Sodium hidroksida (NaOH) dan Sodium silikat (Na2SiO3). Kuat tekan direncanakan sebesar 20 MPa. Berdasarkan penelitian didapatkan hasil 4 benda uji yang memenuhi kuat tekan rencana dengan kuat tekan terbesar ada pada perbandingan aktivator 5:2 yang mencapai 27.275MPa. Beton geopolimer dapat dijadikan alternatif perkerasan kaku pada daerah pesisir pantai, karena tidak diperoleh perbedaan yang signifikan dari hasil perbandingan perendaman antara air laut dan air PDAM.ABSTRACTRoad construction in coastal areas is still using bending pavement. This pavement is often damaged by flooding of high tides (rob). Rob puddles are proven to reduce the bonding power between asphalt and aggregate, resulting in asphalt peeling that can shorten the road's life. Therefore rigid pavement can be used as a solution to this problem. However, cement in the rigid pavement is considered less environmentally friendly because it releases a lot of carbon dioxide (CO2) in its production. Therefore, geopolymer concrete made from flying ash can be environmentally friendly because the materials used come from coal-burning waste. This study conducted a substantial press test against nine cylindrical test objects measuring 30cm high and 15cm in diameter with a concrete age of 28 days in seawater immersion and tap water. In the manufacture of test objects using aggregate comparisons with binders 75:25, 70:30, and 65:45, each consists of three test objects per body. The comparison of activators used is 1:2, 3:2, and 5:2. The activators used are Sodium hydroxide (NaOH) and Sodium silicate (Na2SiO3). The planned compressive strength of 20 MPa. Based on the research obtained, the results of the 4 test objects that meet the strong press plan with the most significant compressive force is in the ratio of activators 5:2, which reaches 27.275MPa. Geopolymer concrete can be used as an alternative to the rigid pavement in coastal areas because there is no significant difference from the comparison of immersion between seawater and PDAM water
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.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.