Arie Wardhono, David W. Law, Mochamad Firmansyah Sofianto, Meity Wulandari
Cement, the primary material of concrete, is one of the main causes of global warming and climate change issues due to its production process. This paper reports the strength performance of fly ash and rice husk ash geopolymer as cement replacements in sustainable infrastructure green materials in supporting SDG 9 and SDG 13. A comparison with cement-based concrete was applied to identify the strength performance as a cement replacement material. The strength performance was carried out by compressive strength test. The results show that fly ash and rice husk ash can be used as alternative cement replacement materials. Fly ash-based geopolymer exhibited superior strength performance compared to all materials which can be used in paving block infrastructure innovation to support SDG 9. A combination of fly ash and rice husk ash can be used as alternative cement replacement materials for geopolymers to address the global warming issue which leads to global climate change in supporting SDG 13. © The Authors.
Universitas Negeri Surabaya, Civil Engineering Department, Surabaya, Indonesia; RMIT University, School of Engineering, Melbourne, Australia
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