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Rahmat D. Sutrisno
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Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Journal : Journal of Civil Engineering

 1 
Shear Behavior Simulation of Reinforced Concrete Beam Incorporating Glass Fibber-Reinforced Polymer Shear Reinforcement Rahmat D. Sutrisno; Wahyuniarsih Sutrisno; Harun Alrasyid; Bambang Piscesa; Mudji Irmawan
Journal of Civil Engineering Vol. 39 No. 2 (2024)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v39i2.7280

Abstract

This paper presents the shear behavior of concrete beams incorporating glass fiber-reinforced polymer (GFRP) stirrups using a nonlinear finite element simulation package, 3D-NLFEA. The experimental data was adopted from the test results performed by previous researchers. The constitutive model for the concrete material used in this simulation is based on the plasticity-fracture model and considers the tension-stiffening effect of the concrete. The numerical simulation result was compared with the experimental test, including the ultimate shear forcedeflection response and cracking pattern. Based on the analysis result, it was found that the ultimate shear force-deflection response shows almost the same. For the mean ratio of prediction ultimate shear load to actual ultimate shear load from the experimental result and a coefficient of variation of 1.000 and 0.206%, respectively, and deformation results, the mean ratio of prediction deformations for the mid-shear span and mid-span of 0.966 and 0.941, respectively, with the coefficient of variation for the mid shear span and mid-span of 11.849% and 7.627%, respectively. However, the cracking pattern mode of the beam shows good results, which complies with the experimental test.
Investigation of the effect of sandblasting waste treatment method as nano-silica on the compressive strength of concrete mortar Muhammad Z. Abidin; Wahyuniarsih Sutrisno; Rahmat D. Sutrisno
Journal of Civil Engineering Vol. 38 No. 2 (2023)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v38i2.7472

Abstract

This study presents the effect of nano-silica (NS) from sandblasting waste as an additive on the mechanical properties of concrete mortar. Sandblasting process in shipping repair industry generate massive waste of silica sand. The silica sand produced from this process has quite fine particles and contains impurities such as residual rust, paint and other materials so it is dangerous for health if not used properly. In this research, the nano-silica was produced by using the sol-gel and mechanical grinding methods. In this research, nano silica material was added as an additive with a percentage varying from 0% to 5%. The results show that producing nano silica from sandblasting waste with a combination of sol-gel and mechanical grinding methods can produce an average size of 148.9 nm with 96.90% purities silica (SiO2). The compressive strength test also shows that adding NS can increase the compressive strength of the concrete. The highest compressive strength obtained from this research was. 29.76 MPa with the addition of 1% of nano-silica. This compressive strength is 37.5% higher than the control mixture.
Co-Authors Bambang Piscesa Harun Alrasyid Mudji Irmawan Muhammad Z. Abidin Wahyuniarsih Sutrisno