Article Per Year (5 Year)
p-Index From 2021 - 2026
2.293
P-Index
This Author published in this journals
All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik ITS IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal Teknik Sipil Journal of Civil Engineering Jurnal Teknik Sipil Journal of Advanced Civil and Environmental Engineering Jurnal Penelitian Pendidikan IPA (JPPIPA) Civil Engineering Dimension Jurnal Aplikasi Teknik Sipil Jurnal Manajemen Aset Infrastruktur dan Fasilitas Logic : Jurnal Rancang Bangun dan Teknologi Portal: Jurnal Teknik Sipil Journal of Infrastructure and Facility Asset Management Publikasi Riset Orientasi Teknik Sipil (Proteksi) Seminar Nasional Ilmu Terapan Journal Integration of Management Studies
Januarti Jaya Ekaputri
Civil Engineering Department, Institut Teknologi Sepuluh Nopember, Surabaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

Published : 35 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Civil Engineering Dimension

 1 
Improving Geopolymer Characteristics with Addition of Poly-Vinyl Alcohol (PVA) Fibers Januarti Jaya Ekaputri; Chikako Fujiyama; Nobuhiro Chijiwa; Tu Dac Ho; Hung Thanh Nguyen
Civil Engineering Dimension Vol. 23 No. 1 (2021): MARCH 2021
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (606.075 KB) | DOI: 10.9744/ced.23.1.28-34

Abstract

This paper presents the benefits of PVA fibers in improving the mechanical properties of class F fly-ash-based geopolymer concrete. The activator used in the geopolymer was 8M sodium hydroxide (NaOH) and sodium silicate (Na2SiO3), with a mass ratio of Na2SiO3 to NaOH varied from 1.5 to 2.5. Cylindrical specimens with a diameter of 100 mm and a height of 200 mm were prepared for mechanical strength tests. The PVA fibers in the geopolymers were fixed at 0.4%, 0.6%, and 0.8% by total volume. Some mechanical tests were carried out, including compression, splitting, direct tensile and elastic modulus tests. It was found that the mixture with a ratio of alkalis of 1.5 and the PVA fiber content of 0.4% had the best workability. The highest compressive strength was obtained in a mixture with alkali activator ratios of 1.5 and 2.0, and with 0.6% fiber addition. The ratio of the tensile (and splitting-tensile) strength to compressive strength was found to increase with the certain amount of PVA fibers and the ratio of the alkali activators. The workability issue and fiber direction in the concrete were the dominant factors influencing the properties of geopolymer concrete.
Capillary Imbibition of Concrete Containing Cold Bonded Fly Ash-Based Lightweight Aggregate in a Salt Environment Risdanareni, Puput; Sulton, Mohammad; Nindyawati, Nindyawati; Rosyidi, Ditya Hafidz; Ekaputri, Januarti Jaya; Razak, Rafiza Binti Abd.; Abdullah, Mohd Mustafa Al Bakri
Civil Engineering Dimension Vol. 28 No. 1 (2026): MARCH 2026
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.28.1.23-33

Abstract

Cold bonded lightweight aggregate generated from fly ash (FA LWA) has become an interesting approach to increase the consumption of fly ash and prevent over-mining of natural aggregate. However, using the cold-bonded hardening method could increase the number of open pores in LWA, making the concrete containing this LWA face an increased risk of degradation due to water ingress. Thus, in this research, the effect of using FA LWA in concrete on the mechanical and transport properties in a salt environment is being investigated. Three aggregate replacement ratios of 0, 50, and 100% were applied, while the salt environment was mimicked with NaCl and Na2SO4 solutions. The results show that the optimum replacement rate of FA LWA was 50%. Regarding the transport properties, exposing concrete to a salt environment (NaCl or Na2SO4) proved to slow down the capillary imbibition rate slightly.
Co-Authors . Faimun Abda Abda Abdullah, Mohd Mustafa Al Bakri Achmad Freddya Eka Prasandha Adha, Augusta Adlizie Rifkianda Muhammad Adriyan Candra Purnama Afgani, Kurnia Fajar Ahyudanari, Ervina Aji, Pujo Amini, Iqlima Nuril Anda, Martin Annisa Rahmadina Antonius Antonius Ari Widayanti Ari Widayanti Ari Widayanti Aulia, Siti Aja Azwar Annas Bari, M. Shahib Al Basoeki, Makno Buntara S. Gan Chikako Fujiyama Danardi, Luki Diana, Nur Ayu Dimas Setiyo Nugroho Dora Melati Nurita Sandi Dwa Desa Warnana Han Ay Lie Hendrawan Setyo Warsito Herry Budianto Hitapriya Suprayitno, Hitapriya Hung Thanh Nguyen Ign. Harry Sumartono Imam Junaidi Indarto Indarto Irawan, Candra Junaedi Utomo, Junaedi Kusbiantoro, Andri Laory, Irwanda M. Shahib Al Bari M. Shofi’ul Amin Makno Basoeki Maulana, Mahendra Andiek Mohammad Sulton Nikmatus Solikha Nindyawati Nindyawati Nobuhiro Chijiwa Prastyanto, Catur Arif Puput Risdanareni Raden Aswin Rahadi Ratna Handayani Razak, Rafiza Binti Abd. Ria Asih Aryani Soemitro Ridho Bayuaji Rosyidi, Ditya Hafidz Setiamarga, Davin H. E. Setiamarga, Davin H. Ekaputra Sidiq Purnomo Syah, Dzikrie Fikriyan Thilal Syihabuddin Toni Budi Santoso Trihanyndio Rendy Satrya Triwulan Triwulan Triwulan Triwulan Triwulan Triwulan Triwulan Triwulan Triwulan Triwulan Triwulan Triwulan Triwulan Triwulan Tu Dac Ho Vandi Alextrianto Widi Astuti Winda Agustin Wiwik Handayani Wulandari, Meity Yeni Rochsianawati Yusak Nurrizki