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Journal : Makara Journal of Technology

Surface Treatment of Fly Ash for Improving the Tensile Strength of Fly Ash/Unsaturated Polyester Composites Sugiman, Sugiman; Setyawan, Paryanto Dwi
Makara Journal of Technology Vol. 17, No. 3
Publisher : UI Scholars Hub

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Abstract

The paper presents the surface treatment of fly ashes using acid and alkali solution on the tensile strength of the fly ash/unsaturated polyester (UP) composites. Sulfuric acid (H2SO4), hydrofluoric acid (HF) and sodium hydroxide (NaOH) solution with concentration of 0%, 5%, 10%, 15%, and 20% (by weight) were used for surface treatment of fly ashes. Generally, the tensile strength of the treated fly-ash/UP composites shows a significant increase compared to the untreated fly ash. Of all surface treatments studied, the optimum tensile strength was obtained at a concentration of 10%. At this concentration, at a fly ash content of 30% (weight), the surface treatment using NaOH gave the highest tensile strength, approximately 18.69 MPa, or increased about 91% compared to the untreated fly ash. The morphology of fracture surfaces were evaluated using a scanning electron microscope (SEM). The fracture surfaces of the treated fly ash composite were rougher than that of the untreated fly ash indicating the improvement of the fly ashes-UP interaction.
Co-Authors Abdul Wakhid Achmalia, Aisyah Fany Adi Nur Cahyono Adli, Abiyyi Muhammad Alamsyah - Alfian Nur Aziz, Alfian Nur Alif Fauziah Sari, Alif Fauziah Amin Suyitno Anam, Saroful Aoyama, Kazuhiro Ardhi Prabowo Arief Agoestanto Arifah, Yekti Nur Arina Ulil Faroh Ariyadi Wijaya Asriani, Elisa Desi Atika Nur Sabrina Ayu Andira Bambang Eko Susilo Budi Waluya Budi Waluya Cynthia, Ari Danuri Danuri Dedeh Kurniasih Dwi Setyawan Dwi Sulistyaningsih Dwijanto Dwijanto, Dwijanto Eko Supriyadi Emi Pujiastuti Endang Sugiharti, Endang Eva Agustiana Rahayu Fadlilah, Itsnaini Munjiyatul Hajarul Masi Hanifatur Rohman Halim, Bravura Candra Hendri Handoko hengky tri ikhsanto, hengky tri ikhsanto Heri Retnawati Hidayah, Dina Yulia Hidayati, Intan Indah Urwatin Wusqo Ismail, Abid Khoirul Isnarto Isnarto Isnarto Isnarto Isti Hidayah Iwan Junaedi Iwan Junaedi Juwita, Puspa Khathibul Umam Zaid Nugroho Kinasih, Sekar Lutfiani, Nurul M. Asikin M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Ma'unah, Siti Mawarti, lida Mohammad Asikin Much Aziz Muslim Muhammad Kharis Mulyono Mulyono Muslih Hasan Pambudi Ni'mah, Lailatun Nila Ubaidah Nila Ubaidah Novalia, Dyah Nuke Apriyanti Nur Fathaillah Pajrin Nurkaromah Dwidayati, Nurkaromah Paryanto Dwi Setyawan Pawestri Dian Purnamasari Pindo Apip Permana, Pindo Apip Pradewita, Wella Cintya Pradina, Putri Dwi Pujilestari, Sri Putri, Elanda Laksinta Putriaji Hendikawati Rianisa Scientisa A Riswanti Rini Rochmad - Safitri, Tias Saiful Arifin Scolastika Mariani Setiyani Sofyan Adian Mukti St. Budi Waluya Stevanus Budi Waluja Sukestiyarno Sukestiyarno Sulardjaka Sulardjaka Sunarmi Sunarmi Sunarti Supriyanti Supriyanti Suryani, Andika Resti Triwibowo, Zanuar Try Suprayo Tyas, Marita Ayuning Ulfiati, Leili Vika Oktoviani Wahyu Setyaningrum Walid Walid, Walid Wardono Wardono Wulandari, Arum Nur Y.L. Sukestiyarno Yaya S. Kusumah YL Sukestiyarno Yulianto, Dimas Arif Zaenuri Mastur Zaenuri Zaenuri Zaenuri Zaenuri Ziyana Endah Khairun Nisa'