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All Journal Jurnal AGROTEKNOLOGI Jurnal Teknologi Pangan dan Gizi JRMA (Jurnal Riset Manajemen dan Akuntansi) agriTECH Jurnal Abdi Insani Peka: Jurnal Pengabdian Kepada Masyarakat ABDINE Jurnal Pengabdian Masyarakat Widya Teknik Journal of Green Science and Technology
Tarsisius Dwi Wibawa Budianta
Universitas Katolik Widya Mandala Surabaya
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Journal : Journal of Green Science and Technology

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The Effect of Aggregate Gradation Variation on Mechanical Performance and Porosity of Porous Geopolymer Concrete Saputro, Yayan Adi; Qomaruddin, Mochammad; Budianta, Tarsisius Dwi Wibawa
Journal of Green Science and Technology Vol 9 No 1 (2025): Journal of Green Science and Technology Vol. 9 No. 1 March 2025
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v9i1.9940

Abstract

Porous geopolymer concrete has gained attention as a sustainable and environmentally friendly alternative to conventional Portland cement-based concrete, utilizing industrial waste such as fly ash. This study investigates the effect of aggregate gradation variations on the mechanical properties, porosity, and sustainability of fly ash-based porous geopolymer concrete. The experimental method was employed, utilizing fly ash as the primary binder, sodium hydroxide (NaOH) as the activator, and coarse aggregates of varying sizes (3/8", 1/2", and 3/4"). The concrete samples were tested for compressive strength and porosity at 7, 14, and 28 days following ASTM standards. The results indicate that aggregate gradation significantly influences the mechanical properties, porosity, and sustainability of geopolymer concrete. Smaller aggregate sizes (3/8") produced higher compressive strength (5.42 MPa at 28 days) but lower porosity, while larger aggregates (3/4") increased porosity but reduced compressive strength. Additionally, the study confirms that geopolymer concrete using fly ash as a binder meets the standard requirements for setting time, specific gravity, and durability. These findings contribute to optimizing porous geopolymer concrete for sustainable construction applications, particularly in drainage and permeable pavement systems, promoting waste utilization and environmental sustainability.  Keyword: Porous geopolymer concrete, fly ash, , porosity, waste, sustainability
Co-Authors Andreas, Stefanie Lorily Andrew Joewono Andriani, Angelica Anggraeni, Octavia Carolina Angriani, Vivi Banua, Agnes Caroline D., Eunike Intar Dian I Y Ribka Stefanie Wongso, Paini Sri Widyawati, Tarsisius D B Fenny A K, Evelyn L W, Dian I Y Dyancandra, Gabriella Natasha Elisabeth Supriharyanti F., Shanly Vivia Haditanojo, Venny Halim, Maria Olivia Indah Kuswardani Jati, Ignasius Radix A.P. Juanda, Keiko Zefanya Kristyanto, Visi Saujaningati Lanny Agustine Maria Olivia Halim Natria, Ursula Angelika Nayottama, Ignasius Pamudji Anggaraksa Nekhasius Agus Sunarjanto Paini Sri Widyati Prastianti, Litarasmi Qomaruddin, Mochammad Rr. Puruwita Wardani Saputro, Yayan Adi Setijawaty, Erni Setiokusumo, Christine Sitepu, Rasional Skalastika, Brigita Rambu Soepardi, H. Goeswono Srianta, Ignatius Suratno Suratno Thomas Aquinas Wijanarko Thomas Indarto Putut Suseno Trisnawati, Chatarina Yayuk Tristanto, Nerissa Arviana Utomo, Adrianus Rulianto Wahyudi Wibowo Werdani, Yesiana Dwi Wahyu Yuliana Yuliana