Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Sinergi
Mansor, Hazrina
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Evaluation of recycled steel properties originating from construction steel waste Alias, Mohamad Zarif Mirza; Asnawi Subki, Nur Ezzaryn; Mansor, Hazrina; Sahol Hamid, Yazmin; Mohd Afendi, Nurizzati Hidayah; Mohd Yusoff, Mazlan; Dominic, Ellvera De Ermalina; Nasurudin, Nur Saihah
SINERGI Vol 29, No 3 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.3.024

Abstract

This research presents an experiment of constructional recycled steel properties that has been remelted into component-shaped specimens using green sand casting. A series of tensile, compressive and toughness tests were conducted. Then, specimens were observed using Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray (EDX) for microstructure analysis and chemical composition determination. This experiment was done to determine whether the recycled steel quality met the industrial standards. All tests were conducted at Universiti Teknologi MARA (UiTM), providing data on the stress-strain relationship and toughness of recycled steel. The results indicated that recycled steel exhibited tensile characteristics below the standard strength range required by Eurocode. The changes in Young’s modulus of the steel were attributed to exposure to high temperatures, causing significant vibration within the steel atoms and increasing the distance between atoms, thereby reducing tensile strength. The influence of impurities may also be a factor affecting tensile strength. The tests also concluded that the recycled steel construction waste was a brittle material with an average V-notch toughness of 24J.
Experimental investigation of the Moment Bolted Coupler (MBT) with steel on the bond strength under different monotonic pull-out tests Mohamad Nor, Mohamad Amir; Ahmad, Nursafarina; Mansor, Hazrina
SINERGI Vol 29, No 3 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.3.025

Abstract

The bond strength between steel reinforcement bars and mechanical bolted couplers (MBT) is essential for the structural integrity of reinforced concrete structures. However, various pull-out test methods yield inconsistent results when assessing this bond strength. This research examines the impact of reinforcement bar diameter (12mm, 16mm, and 20mm) and three different pull-out test configurations (M1, M2, and M3) on the bond strength of MBT couplers. The M1 method, employing direct tensile loading and a standard clamp zone, consistently produced the highest bond strength values across all bar diameters. Its simplicity, reliability, and adherence to standardized procedures make it the preferred method for determining the maximum bond capacity of MBTs. While the M2 and M3 methods offer insights into coupler behavior under complex loading scenarios, they exhibit lower bond strength values compared to M1. The M1 pull-out test method is recommended as the primary method for evaluating the bond strength of MBT in practical applications, with M2 testing as a potential supplement for a more comprehensive understanding of coupler behavior.
Co-Authors Ahmad, Nursafarina Alias, Mohamad Zarif Mirza Asnawi Subki, Nur Ezzaryn Dominic, Ellvera De Ermalina Mohamad Nor, Mohamad Amir Mohd Afendi, Nurizzati Hidayah Mohd Yusoff, Mazlan Nasurudin, Nur Saihah Sahol Hamid, Yazmin