Article Per Year (5 Year)
p-Index From 2021 - 2026
0.947
P-Index
This Author published in this journals
All Journal REKA RACANA Jurnal Teknik Sipil Journal of Advanced Civil and Environmental Engineering Journal of the Civil Engineering Forum
Oesman, Mardiana
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Education Environmental Science

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Journal of Advanced Civil and Environmental Engineering

 1 
Effect of Polypropylene Fibre on Self- Compacting High-performance Concrete Oesman, Mardiana; Herawati, Risma; Jauza, Zalfa Nuur
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 7, No 1 (2024): April
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.7.1.65-79

Abstract

This study conducted tests on the design mixture of Polypropylene Fibre Reinforced Self-Compacting High-performance Concrete (PFRSCHPC) and Self-Compacting high-performance concrete (SCHPC) to determine the mechanical properties of the concrete, and the beams behaviour under bending loads. The composition of the mixtures of PFRSCHPC and SCHPC refer to Oesman, et al. (2022), which conducted research on UHPC (ultra-high-performance concrete) using natural sand and crushed stone through a 4.75mm sieve. PFRSCHPC and SCHPC compositions using Portland Slag Cement (PSC); 1% superplasticizer and 30% silica fume of the total binder; 1% Polypropylene fibre (PP); the ratio of  sand to crushed stone 45%: 55%; and the w/b was 0.23. However, SCHPC as the control concrete mixture does not contain PP. The testing results of the PFRSCHPC showed compressive strength, tensile strength, flexural strength, and modulus of elasticity were 42.73 MPa; 4.33 MPa; 8.98 MPa; 45.51 GPa, respectively. When compared to SCHPC, PP has an influence in increasing tensile strength by 2.38 MPa (122.05%), flexural strength by 2.67 MPa (42.77%), and concrete elasticity modulus by 6.67 GPa (17.32%). However, 1% PP decreased compressive strength of PFRSCHPC, lower by 4.93 MPa (10.34%) compared to SCHPC. PFRSCHPC beam reached a peak load of 27.5 kN; initial stiffness of 5.32 kN/mm; ductility of 5.6; and toughness of 1606.08 kNm. PFRSCHPC beam with PP fibre content of 1% are able to increase 17.02% of peak load; 14.75% of ductility, and 113.91% of toughness.
Ultra-High Performance Concrete Jacketing with Local Aggregates for Axial Strengthening of Reinforced Concrete Columns Oesman, Mardiana; Harry, Satrio
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 8, No 2 (2025): October
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.8.2.22-31

Abstract

This study investigates the axial load performance of reinforced concrete (RC) columns strengthened with ultra-high-performance concrete (UHPC) jacketing incorporating locally sourced coarse aggregate. Four column specimens were tested, with variations in core concrete strength (20 MPa and 35 MPa) and jacketing material (normal concrete and UHPC). Monotonic axial compression tests were performed to evaluate load-bearing capacity, stiffness, ductility, energy absorption, and toughness. At 90 days, compressive strengths were 24.32 MPa for the 20 MPa concrete, 46.95 MPa for the 35 MPa concrete, and 80.06 MPa for the UHPC. Results demonstrate that UHPC jacketing significantly improved axial performance compared to normal concrete, particularly in terms of maximum load, stiffness, and toughness. However, higher-strength cores exhibited slightly reduced ductility. The findings underscore the potential of UHPC with coarse aggregate as a cost-effective strengthening material for existing RC columns, offering practical guidance for retrofitting strategies in developing countries.
Co-Authors Harry, Satrio Herawati, Risma Jauza, Zalfa Nuur Muhamad Irfan Nurdin Muhammad Miftahul Riza Nuryana Ferryana, Irwan Suharwanto Suharwanto Sumargo Sumargo Wahib Hasan Prasetyo