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All Journal Jurnal Planologi Sultan Agung TEKNIK MEDIA KOMUNIKASI TEKNIK SIPIL Teknik Sipil dan Arsitektur Jurnal Ilmu Dasar Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Journal of Engineering and Technological Sciences Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Pondasi Jurnal Manajemen Pendidikan Syntax Literate: Jurnal Ilmiah Indonesia Rang Teknik Journal Astonjadro Jurnal Hilirisasi IPTEKS (JHI) Aptisi Transactions on Technopreneurship (ATT) ComTech: Computer, Mathematics and Engineering Applications Jurnal Ilmiah RESPATI Portal: Jurnal Teknik Sipil Agro Bali: Agricultural Journal Jurnal Ilmiah Akuntansi Kesatuan Jurnal Bakti Masyarakat Indonesia Jurnal Teknik Sipil dan Arsitektur Jurnal Revenue : Jurnal Ilmiah Akuntansi Journal of Industrial Engineering & Management Research (JIEMAR) Journal of Advanced Multidisciplinary Research Fokus: Publikasi Ilmiah untuk Mahasiswa, Staf Pengajar dan Alumni Universitas Kapuas Sintang PIPER Media Komunikasi Dunia Ilmu Sipil (MoDuluS) Jurnal Ilmiah Wahana Pendidikan Jurnal Manajerial Dan Kewirausahaan Teknika INTERNATIONAL JOURNAL OF MECHANICAL COMPUTATIONAL AND MANUFACTURING RESEARCH Jurnal Bina Komputer International Journal of Multidisciplinary Sciences and Arts Jurnal Audit dan Perpajakan Eduvest - Journal of Universal Studies MDP Student Conference JIM: Jurnal Ilmiah Mahasiswa Pendidikan Sejarah Maximus: Journal of Biological and Life Sciences TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Prosiding Dedikasi: Pengabdian Mahasiswa Kepada Masyarakat Jurnal Ekonomi, Manajemen, Akuntansi jurnal informasi teknologi dan sistem
Antonius Antonius
Department of Civil Engineering, Universitas Islam Sultan Agung, Jl. Raya Kaligawe Km. 4, Semarang 50112, Indonesia
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Journal : Astonjadro

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Anticipation and Solutions for Cost Overruns of Material Costs in Toll Road Construction Projects Isfahani, Muhammad Nafhan; Antonius, Antonius; Wibowo, Kartono
ASTONJADRO Vol. 14 No. 2 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i2.18377

Abstract

This paper presents the results of research on anticipation and solutions for material cost overrun in the open system Toll Road project in Jadebotabek. The purpose of this study is to determine the anticipation and solutions for handling material cost overrun. This study was conducted by surveying 76 correspondents consisting of Managers, Consultants and Contractors involved in the construction of Toll roads in Jadebotabek. The survey results were tested for validity and reliability to determine the dominant factors causing cost overrun, then the development of anticipation and solutions for handling material cost overrun was carried out by a team of experts. The results of the study showed that there were 10 valid factors causing cost overrun with a coefficient value of 0.389 - 0.716 and 13 reliable factors causing cost overrun with a Cronbach's alpha value above 0.700. The results of this study also show that anticipation and solutions for handling material cost overrun in toll road projects are preventive measures to reduce and eliminate the occurrence of cost overrun at the planning stage and at the implementation stage.
Design of Low Alkali Activator Geopolymer Concrete Mixtures Setia Romadhon, Eri; Antonius, Antonius; Sumirin, Sumirin
ASTONJADRO Vol. 11 No. 3 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i3.7484

Abstract

This paper presents the results of research on the design of geopolymer concrete mixes. The main objective of this research is to develop an efficient and easy design of low-alkaline activator geopolymer concrete mixture, which until now has been the biggest obstacle in the use of geopolymer concrete. The variables reviewed were the amount of alkaline activator was quite low at 4%, room temperature and 60oC ratio of alkaline activator/fly ash (AAS/FA) were 0.35, 0.4, 0.5, 0.6. The test results show the parameters of geopolymer concrete with low alkali activator 4%, sodium silicate/sodium hydroxide ratio 2.5%, sodium hydroxide molarity 14M, type F fly ash and the discovery of the relationship model of compressive strength and the ratio of alkali activator/fly ash with a very high correlation as basic development of geopolymer concrete mix design. The design of the geopolymer concrete mix developed is easy because it is application-based and efficient because it only requires 4% alkaline activator.
Innovation in the Use of Rigid Pavement Waste in Recycled Concrete: Challenges and Solutions to Improve Mechanical Performance Lubab, Lubab; Antonius, Antonius; Sumirin, Sumirin
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.17956

Abstract

The use of rigid pavement waste as recycled aggregate in concrete has become a focus of research in an effort to improve sustainability in the construction industry. This article discusses the main challenges in using rigid pavement waste as recycled aggregate, especially related to the mechanical strength of concrete, such as compressive and flexural strength. In addition, this article also explores various innovations in concrete mix design that can overcome the mechanical performance weaknesses of recycled concrete. Some of the solutions discussed include the use of reinforcing fibers, alternative binders, and more efficient production technologies. The research shows that these innovations can significantly improve the performance of recycled concrete with rigid pavement waste aggregate, making it a viable option to support more environmentally friendly infrastructure development.
Co-Authors ABDUL RAHMI Abdul Rochim Adhitiyawarman, Adhitiyawarman Affendi, Achmad Sholikin Agus Budiman Andika, Wahyu Anjelia, Viona Argunanto, Argunanto Arifin, Deni Asma Asma Azizah, Najla Nur Berlian Sitorus Bernard Renaldy Suteja Brandon, Brandon Christ Rudianto Citra, Kharisma Cornelius, Kelsen Dewi, Ni Luh Manik Cahyaning El Latifa Sri Suharto Endang Purwaningsih Fachry Abda El Rahman Fasikhullisan, Fasikhullisan Fatkhurozak, Fatkhurozak Faza, Muhammad Arief Fransina Latumahina Giovanna, Aurelyn Gres Maretta, Gres Hakim, Nurkholis Han Ay Lie Hanif, Faizira Nur Haq, Naufal Al Hari Setiabudi Husni, Hari Setiabudi Hendrik, Billyanto Henny Pratiwi Adi Herlambang, Hendri Hidayat, Muhammad Zhorif Holiawati, Holiawati Idrus Idrus Iffa Afiqa Khairani Ikhlas, Zaitul Irawan, Yosef Ariyanto Irmayanti Irmayanti, Irmayanti Isfahani, Muhammad Nafhan Iswandi Imran Januarti Jaya Ekaputri Jaya, Andi Eka Putra Jorden, Jorden Junaedi Utomo, Junaedi Karlinasari, Rinda Kartono Wibowo, Kartono Kiong, Ritchie Kristina Kristina Kurniawan Kurniawan Kuswariyah, Ratmi Limawan, Hendy Linggasa, M.I. Dewi Lubab, Lubab Lukman, Wiwik Malik, Muhamad Abdul Mansyur, Nur Indah Mardin, Mardin Maruli, Berkat Afni Mashudi Mashudi Masriani . Maya Sari MILA SILFIA Muhammad Syahrizal Mulyadi, Salsa Pratiwi Mulyana, Jeane Siswitasari Nanda, Bunga Napitupulu, Jonathan Niko, Fernanda Ni’am, M Faiqun Nofryanti, Nofryanti Novina, Firda Nugroho, Very Sapto Nurcahya, Gebriel Nurhayu, Winati Nurlinda, Andika Oktavia, Kartika Penidas Fodinggo Tanaem Prabowo Setiyawan, Prabowo Prabowo, Rizal Agung Prasetyo, Totok Andi Prastyo, Sugeng Prihatno, Teguh Purnamasari, Eka Purnomo, Vito Dwi Purwoko Purwoko Putri, Isnaini Anggraini Rachmat Mudiyono, Rachmat Rakhmaji, Iqbal Riana, Elisa Nurma Romadhon, Rizki Roni Pazla Saputra, Priyandi Kusuma Sari, Dian Anggria Sari, Nur Desianti Permata Sarwo Edy Handoyo, Sarwo Edy Selviena, Shelly Setia Romadhon, Eri Shinta, Ni Luh Putu Subekti, Andip Sumirin Sumirin Suripto Suripto Suryadi, Muhammad Wahyu Suryadi Suryanti, Erma Susilawati, Susilawati Suzandi, Yudi Taufan Abdurrachman Tendean, Sandi Tewoloipaky, Wasti Thannia, Yvonne Titing, Deny Tony Darmanto Tunggal, Arie Wenxi, Wenxi Wibowo, H. Kartono Wibowo, Titus Tonny Willay, Thommy Wulan, Defina Andany Yanti, Gusri Zahra, Anisa Mumtaz Zahra, Indri Eliza