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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Infrastructure and Construction Technology
Dian Nanda Islami
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Civil Engineering, Building, Construction & Architecture Engineering

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Sifat Fisik Dan Mekanik Mortar Dengan Penambahan Bakteri Bacillus Subtilis Dian Nanda Islami; Zulfikar Djauhari; Enno Yuniarto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The development of construction technology has progressed quite rapidly, especially in the field of building materials. One form of technological advancement in building materials which has been developing until now is mortar. Mortar is a mixture of cement, fine aggregate, water and stirred until homogeneous. This study used Bacillus Subtilis as an added ingredient by examining it’s physical and mechanical properties, as well as an innovation in crack recovery in mortars using bacteria called self healing Mortar. Tests were carried out on normal mortar and bacterial mortar aged 28 and 56 days. The physical properties of the mortar tested were porosity, sorptivity and unit weight, while the mechanical properties tested were compressive strength. The results showed that the porosity value of bacterial mortality was smaller than that of normal mortality at 28 days and 56 days with a value of 12.53% and 11.8%. The results of the bacterial mortar unit weight test showed a greater value than normal mortar at the age of 28 days and 56 days with a value of 2.12 gr / cm3 and 2.184 gr / cm3. The soprtivity test results showed that the value of sorptivity mortar bacteria was lower at the age of 28 days and 56 days compared to normal sorptivity mortar with values of 0.1092 mm / min0.5 and 0.0861 mm / min0.5. The compressive strength test results showed that the compressive strength value of bacterial mortar was greater than normal mortar at the age of 28 days and 56 days with values of 20.94 MPa and 21.61 MPa. Based on these data, it can be concluded that the mortar with the addition of bacillus subtilis bacteria is better than normal mortar. Keyword : Mortar, Bacillus Subtilis, Physical Properties, Mechanical Properties, Self Healing
Studi Komparatif Metode Perkuatan Struktur Beton Bertulang Berdasarkan Tinjauan Literatur, Pengujian Balok, dan Rehabilitasi Pascabencana Anwar; Dian Nanda Islami; Muhammad Rifal Fan Putra
Journal of Infrastructure and Construction Technology Vol. 2 No. 2 (2024): July 2024
Publisher : Dept. of Civil Engineering Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56208/jictech.2.2.52-58

Abstract

Retrofitting is a key strategy to restore or enhance the performance of reinforced concrete structures damaged by overloading, deterioration, fire, or seismic events. This study synthesizes findings from three approaches: a literature review, experimental testing using FRP on reinforced beams, and a case study involving post-fire strengthening with CFRP and steel bracing. Various methods epoxy injection, concrete jacketing, FRP, CFRP, and bracing are compared based on effectiveness, structural impact, and application context. Results indicate that CFRP and FRP significantly improve flexural and shear strength, epoxy injection is suitable for minor cracks, and concrete jacketing enhances capacity substantially. For fire-damaged structures, combining CFRP and steel bracing effectively reduced drift ratios and restored structural integrity. SAP2000 modeling results align closely with experimental data, confirming its reliability in retrofit analysis. The study highlights that retrofit selection must consider damage level, element type, and cost-efficiency.
Co-Authors Anwar Enno Yuniarto Muhammad Rifal Fan Putra Zulfikar Djauhari