Fix Concrete Cracks with Bacterial Encapsulation, IPB University Student Achieves Third Place in Civil Engineering Days

IPB University’s student team achieved third place in Civil Engineering Days 2021. This competition was held by the Association of Civil Engineering Students Atma Jaya University, Yogyakarta. They joined the branch of the National Scientific Writing Competition (LKTI). In this competition branch, participants are supposed to innovate on eco-friendly concrete. The winner announcements were announced on the 12th of July.

The IPB University student team’s paper was titled “Self-Healing Green Concrete Based On Sporosarcina pasteurii and Diaphorobacter nitroreducens Encapsulated in Polylactic Acid”. The team was accompanied by an IPB University professor from the Department of Civil and Environmental Engineering (SIL), Faculty of Agriculture Technology (Fateta), Dr Heriansyah Putra.

Rizki Maulana Yusuf, a student from the Department of Biology, Faculty of Mathematics and Natural Sciences (FMIPA) IPB University explains that the principle of Self-Healing concrete is the bacteria Sporosarcina pasteurii and Diaphorobacter nitroreducens, which plays a role in closing small concrete cracks.

“Cracks in concrete can be closed due to the microbial induced calcite precipitation (MICP) activity from both of these bacteria. The ammonia created by the MICP activity of S. pasteurii can be turned into free nitrogen gas by D. nitroreducents. These bacterias are encapsulated in Polylactic Acid (PLA) to protect the bacteria from the extreme conditions of the concrete. The degradation of PLA is used as extra nutrition for bacteria so that the closing of the cracks can act faster,” Rizki explains.

Raihan Muhammad Iqbal added that cracks in concrete can cause massive amounts of economic loss because of its high repair costs.

“Our work is a narrative review, where we prepare journals to create a narrative. We needed a month to prepare the idea to paper and to the final stages,” said Raihan, a students of the Civil and Environmental Engineering (SIL) Department, Faculty of Agriculture Technology (Fateta) IPB University.

According to Muhammad Haikal Baihaqi, the worst obstacles that needed to be faced was an internet disconnection in the final presentations and time management.

“We were able to answer the judges’ questions well. Perhaps they were not very satisfied because our work is only a literature study, and only hopes that it can be realized in the future,” this SIL Department of IPB University closes. (Ghinaa/Zul) (IAAS/SYA)

Published Date : 23-Jun-2021

Resource Person : Rizki Maulana Yusuf, Haikal Baihaqi, Raihan Muhammad Iqbal

Keyword : Civil and Environmental Engineering, Department of Biology, Green Concrete, IPB university Student