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All Journal JURNAL KARYA TEKNIK SIPIL Eduvest - Journal of Universal Studies
Martin Hutagalung
Jurusan Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH. Tembalang, Semarang 50275
Aerospace Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Health Professions Neuroscience Social Sciences

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PENGARUH BENTUK DAN KONFIGURASI AGREGAT TERHADAP KUAT TEKAN MORTAR Hutagalung, Martin; Setiawan, Yanuar; Lie, Han Ay; Sabdono, Parang
Jurnal Karya Teknik Sipil Volume 2, Nomor 3, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (737.597 KB)

Abstract

This study aimed to investigate the influence of the shape and position of aggregate to compressive strength of matrix. Research conducted so far to say that the aggregate does not really affect the compressive strength of concrete and the opinions of experts who say that the aggregate rounded shaped is the aggregate are best used in the mix concrete . Therefore, there was a suggestion in this study to examine how the aggregate effect of the concrete compressive strength if we use the aggregate shaped beam (angular). That question will be answered by laboratory testing and modeling and analysis using software (SAP 2000). To determine the effect  used variations size of aggregate  measuring 2 x 2 x 5 cm and 2.5 x 1.5 x 5 cm at the time of casting is also variation in the position to determine the aggregate effect on the compressive strength of matrix. Tests conducted with uniaxial loading (one-way) and use the data logger and LVDT (Linear Variable Displacement Transducer), to measure the displacement that occurs. Through this research is expected, in addition to knowing their effects on the compressive strength of concrete, can also determine its relation to the concrete cracking pattern of voltage obtained when testing and validated by using SAP 2000.
The Challenge Of Implementation Indonesia Industry 4.0 Readiness Index (Indi 4.0) In Infrastructure Company Case Study: At Pt. Hutama Karya (Persero) Hutagalung, Martin; Aldianto, Leo
Eduvest - Journal of Universal Studies Vol. 4 No. 10 (2024): Journal Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v4i10.1372

Abstract

This thesis examines the challenges faced by PT Hutama Karya (Persero) in achieving a score of 4.0 on the Indonesia Industry 4.0 Readiness Index (INDI 4.0), highlighting the gap between current industrial practices and the optimal outcomes set by the INDI 4.0 framework. Through qualitative and quantitative research methodologies, this study conducts an in-depth gap analysis across various domains such as management and organization, human resources and culture, products and services, technology, and company operations to evaluate the current state of digital transformation within the company. The findings indicate significant gaps in strategic alignment, technology adoption, and employee engagement with digital initiatives. These gaps contribute to the current INDI 4.0 score of 3.56, limiting the company's progress toward the desired level of industrial readiness. Additionally, survey results show a score of 3.25, indicating that PT Hutama Karya is still in the early stages of implementation with uneven technology adoption. Strategic recommendations are proposed to bridge these gaps, including enhanced strategic coordination, strengthened technology integration, and the development of a digital-supportive culture. These strategies are designed to facilitate a smoother transition to Industry 4.0 for PT Hutama Karya and provide a framework applicable to similar companies in the infrastructure sector. This research contributes to a broader understanding of the digital transformation challenges within the construction and infrastructure industry, offering a detailed roadmap for effective Industry 4.0 implementation
Co-Authors Han Ay Lie Leo Aldianto Parang Sabdono Yanuar Setiawan