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All Journal EKSAKTA: Journal of Sciences and Data Analysis Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik JITEK (Jurnal Ilmiah Teknosains) Rang Teknik Journal BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Reviews in Civil Engineering Jurnal DISPROTEK Portal: Jurnal Teknik Sipil Jurnal Teknik Sipil dan Teknologi Konstruksi Jurnal Abdi Insani Jurnal Pengabdian Masyarakat Multidisiplin Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Society: Jurnal Pengabdian Masyarakat Lamahu: Jurnal Pengabdian Masyarakat Terintegrasi Indonesian Journal of Society Development (IJSD) Jurnal Teknik Sipil International Journal of Integrative Sciences Jurnal Civil Engineering Study El-Mujtama: Jurnal Pengabdian Masyarakat Science and Technology: Jurnal Pengabdian Masyarakat Journal of Civil Engineering and Vocational Education Advance Sustainable Science, Engineering and Technology (ASSET) Widya Teknik Journal of Green Science and Technology PASAK: Jurnal Teknik Sipil dan Bangunan
Saputro, Yayan Adi
Prodi Teknik Sipil, Fakultas Sains Dan Teknologi, Universitas Islam Nahdlatul Ulama Jepara,
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Journal : Advance Sustainable Science, Engineering and Technology (ASSET)

 1 
Effect of NaOH Molarity on Gel Formation at the Geopolymer–Artificial Aggregate Interface for Pavement Applications Saputro, Yayan Adi; Adnan; Mohammad, Gunawan; Hidayati, Nor; Muna, Nando Nilna; Ningrum, Aprilia Citra
Advance Sustainable Science Engineering and Technology Vol. 8 No. 1 (2026): November - January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i1.3058

Abstract

This study investigates the effect of NaOH molarity (10, 12, and 14 M) on gel formation at the geopolymer–artificial aggregate interfacial transition zone (ITZ) for sustainable pavement binder courses. The study focuses on microstructural and chemical characteristics rather than direct mechanical performance. Using XRF, FTIR, and SEM–EDX analyses, the evolution of gel phases from N-A-S-H to hybrid N/C-A-S-H at the interface was systematically characterized. Increasing NaOH molarity enhanced aluminosilicate dissolution and promoted Ca incorporation, as evidenced by the shift of the main Si–O–T band from approximately 1080 cm⁻¹ (10 M) to 960–970 cm⁻¹ (14 M) and the increase in Ca/Si ratio from 0.15 to 0.22. Among the investigated mixtures, the 12 M variant exhibited the most homogeneous and compact ITZ microstructure, characterized by a continuous reaction rim, balanced Si/Al (2.96) and Ca/Si (0.22) ratios, and minimal microcracking observed at the microscopic scale.
Co-Authors Achmad Ridwan, Achmad Adib, Muhammad Adit, Prihardhita Cahya Finnahar Adnan Adolf Situmorang Ahmad Bagus Bambang Heri Hermawan Ali As’ad Amirullah, Ahmad Baharudin Ana Rahmawati Arba 'Alma, Brasyelia Ardiansyah, Ahamd Feri Arianti, Dini Ariyanto Ariyanto Ariyanto Ariyanto Ariyanto Ariyanto Ariyanto Ariyanto bakhri, M.faisol Cawisdi, Cawisdi Citra, Ika Revalia Darmoko, Wahyu Setyo Decky Rochmanto Decky Rochmanto, Decky Dhian Marhaendri Kakantini Dian Eko Santoso Dwika Fatimatuz Zaroh Efendy, AH Surur Efrizal, Ersa Fahrizal, Yusuf Faqih, Nasyiin Fariza Yulia Kartika Sari Fatchur Roehman Fiki Nur Fitriani Fivin Bagus Septiya Pambudi, Fivin Bagus Septiya Gun Sudiryanto Hamidaturrohmah, Hamidaturrohmah Hanggoro, Wahyu hilmatunniyah, saqifah Ilham Putra Istianah Istianah Istianah Joko Minardi, Joko Kakantini, Dhian Marhaendri Khotibul Umam Khotibul Umam Khotibul Umam Khotibul Umam Laila, Azzah Nor Maemonah, Maemonah Minachussania Mochammad Qomaruddin Mohammad, Gunawan Much Ardian Mahardika Mudjiastuti Handajani Muhammad Daffa Nabil Ifaani Muhammad Khoirul Mahfidh Muhrodi, Muhrodi Muna, Nando Nilna Mushthofa Nely Mak'sudah, Ari Ningrum, Aprilia Citra Noor Azizah Nor Hidayati Nor Khanifah Novita Sari Nurul Fadillah Pratama, Andrie Mandala Yudha Purwanto Purwanto Putri, Meilia Khasanah Qomaruddin, Mochammad Ramadiansah, Dani Rendy, Oktarisa Aviska Rizaldi, Muhammad Rifqi Rohmanto, Decky Saiful, Muhammad Saiful Anwar Samawi, Nur Aini Widya Samsul Arifin SETIAWAN, Ahmad Shadli, Maulana Chasan Shiska Fauziah Shodiq Eko Ariyanto Sisno Riyoko Sudarno Sudarno Sudarno Sudarno Syaifuddin, Dedi Ahmad Tarsisius Dwi Wibawa Budianta Tiara, Mayang Tira Roesdiana Tristan Alfian Triyano, Al Waladan As'ada Wibowo, DS Drajad Widagdo, Jati Widiyono, Aan Zainab Zainab