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Journal : Jurnal Ilmiah Rekayasa Sipil

Uji Kuat Tekan Mortar Geopolymer Berbasis Fly Ash dan Kapur Tupail, Fharhan; Jasman, Jasman; Muis B, Abd
Jurnal Ilmiah Rekayasa Sipil Vol 22 No 1 (2025): April 2025
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v22i1.1728

Abstract

The increasing use of infrastructure in Indonesia every year requires a large cement supply. Cement is a very crucial material for development, and its demand in increasing line with the development of human facilities and infrastructure. However, the cement manufacturing process can cause air pollution, CO₂ gas emissions, and produce B3 waste that can damage the environment. One way to reduce this environmental impact is to utilize industrial waste, such as fly ash and lime, as an alternative to cement using geopolymer technology. This study aimed to measure the compressive strength of geopolymer mortar made from fly ash and lime, and to understand how variations in the mixture affect the achievement of maximum mortar strength. The approach applied in this study is an experimental method carried out in the laboratory of the Muhammadiyah University of Parepare. The test specimens used were in the form of cubes measuring 5x5x5 cm with a ratio of fly ash and lime of 70:30, 75:25, and 80:20, so that a total of 36 test specimens were made. The experiment results showed that the mixture with a higher proportion of ash consistently produced greater compressive strength. The mixture with 75% fly ash and 25% lime increased in compressive strength from 6.667 MPa after 7 days to 10.667 MPa after 28 days. This proves that the addition of fly ash in greater amounts can increase the compressive strength of the mortar, especially because fly ash functions as a pozzolanic material that reacts with free lime, forming calcium silicate hydrate (C-S-H) compounds that function as the main binder and thus strengthen the mortar structure. Therefore, the combination of fly ash and lime at 80%:20% is the most efficient and superior mixture in producing high-strength mortar.
Co-Authors - Hwihanus A, Yufrizal Abd. Rasyid Syamsuri Abdul Aziz Abdul Gani, Kamal Abyan, Sayyid Achmad, Ashfa Adnan, Adnan Adnan Adris Ade Putra Agustina Ahmad Hamid, Ahmad Ahmad, Ramadan M. Aldio, Muhammad Fikhri Ambiyar, Ambiyar Aminuyati Andre Kurniawan Andriani , Cici Andriansyah Andriansyah Anwar, Hindi Arafat, Andril Ardi, Junil Ardiyansyah, M Iksan Arifin, Muh. Arisandi, Duddy Arjuna, Arjuna Arman Arman Arwizet Arwizet, Arwizet Aspar, Fathir Bahrul Amin Baital, Muhammad Syarif Batubara, Ummi Khairani Bayu Adi Nugroho, Bayu Adi Beda, Yosep Budi Syahri Bulkia Rahim Cahyani, Roro Candhy, Mamarasi Chandra, Shandika Cici Andriani Darwin P. Lubis, Darwin Desmaniar, Rani Dini Onasis Djami, Leopold Alexander Djara, Apriana Duka, Risman S. Edy Suprapto Effendi, Marwan Eko Indrawan Eko Susanto Elne Vieke Rambi Erizon, Nelvi Erna Dewita Fadil Maiseptian Fadly, Imam Fahrizal Fahrizal Febri Prasetya Fiki Efendi Fikri, Ikhsanul Gafar, Muammar Saidul Hafifurrezy, M. Hakzah Hamka Hamka, Hamka Hamsu Hanafi, Hamsu Hamsyah, Hamsyah Handa, Muhamad Idham Harman Harman, Harman Haron, Rosmawati Hasanuddin Hasanuddin Hasbullah Hasddin, Hasddin Haydir, Haydir Hazriani, Hazriani Hedwigis Esti Riwayati inda, nur Indrawan , Eko Irfai, Irfai Irzal, Irzal Ismail, Havis istiqomah istiqomah Itu, Katrina Joy Victor Imanuel Sambuaga Judijanto, Loso Juliana, Andi Junil Adri Jusran, Mokoginta K, Basri Kaco, Suardi Kadriani, Kadriani Kamarudin, Moh Khairul Amri Kasim, Hasdi Syahid Kasimir Sarifudin Kasmaida kasmaida Katiandagho, Dismo Khasanah, Ainun Uswatul Lake, Darius V. Lalangpuling, Indra Elisabet Landang, Florida Lapoliwa, Desi Kritiani Lawa, Yosep Limahelu, Ferdinand Alberth Loleh, Adrianus Mahaswari, Ni Nyoman Dechinta Dwi Mahyudin, Dedi Manesi, Damianus Mardi, Feldia Markonah, Markonah Masri Ridwan, Masri Menungsa, Abdul Sarlan Meyok, Greiviany Yunaika Mizkazola, Indri Moh Sabran Sabran Mudinillah, Adam Muhammad Ali Makaminan, Muhammad Ali Muhammad Iqbal Muhammad Risal, Muhammad Muhammad Rusdi Muis B, Abd Muis B, Abd. Mujur, Raftly M. Mukaddas, Jamal Murisal Murisal Musawantoro, Muhammad Mustakim Mustakim Muzaki, Saepul Nabila Tasrif Nanang Qosim Nasrul Edi Santoso Nawir T, Muh Ningsih, Jusmita Nofri Helmi, Nofri Noveliza, Felia Nurfajri Nurfajri, Nurfajri Nurhasanah Nurhasanah Othman, Akmal Aini Parera, Lolita A. M. Pascoal, Kevin G. Pebrian, Pebrian Pratama, Heru Pratama, Raymon Pratomo, Muhammad Agung Primawati , Primawati Primawati Primawati, Primawati Priyono Priyono Purwantono, Purwantono Purwitasari, Paramitha Putra, Rahmat Mardiansyah Putra, Randi Purnama Putrarianda, Mexi Quick Calvin, Iqbal DN Rahmat Hidayat Ramadhan, Fanny Fadillah Refdinal, Refdinal Remon Lapisa Retnaningsih, Inung Wijayanti Ridarmelli Ridarmelli Ridawan, Masri Rizal Indra Tjahya Rokot, Agus Ronny Ronny safinah, safna Safitri Maladeni, Eva Salasiah A, Salasiah A Sambari, Villa Evadelvia Ginal Sangadjisowohy, Idayani Sanning, Sanning Saputra, Aprizal Saputra, Dimas Aulia Semuel Layuk Septiawisda, Maya Shiddiq, Abdul Rahim Simatupang, Minson Sri Rizki Putri Primandari Suari, Muhammad Rahmadi sudiani, yoni Sudirman Sudirman Suharyanto Sukmajaya, Fajar Suleman, Rahman Sunati, Nurmila Suwarja, Suwarja Syahruddin Syahruddin Syahrul Syahrul Syaputra, Afzan Tasrif , Nabila Taufik Taufik Taufiq Akbar Tespoer, Kimberly June Thaheransyah Tin, Chau Trung Tomia, Sumiati Tonjaya, I Gede Tumbol, Michael V.L. Tupail, Fharhan Utami, Eva Yuniarti Wa Ode Sifatu Wakhinuddin Wakhinuddin, Wakhinuddin Waskito Waskito, Waskito Widarto, Hendro Wildy, Fadhlan Wulansari, Rizky Ema Yantony, Didit Yolli Fernanda Yufrizal Yufrizal, Yufrizal Yusuf, Muh. Wahyu Yuyun, Yuyun Zainal Abadi Zarabiyu, Nastya Chila Zulhafril, Herman Zuwirda, Zuwirda