The Impact of Effective Microorganism (EM4) on Recycled Concrete Strength Luthfi Muhammad Mauludin (a*), Yackob Astor (a), Ery Radya Juarti (a), Ridho Septian (a), Muhammad Rayhan Asy Syukri (a), Wulan Maharani (a), Abdul Rahman Mohd Sam (b)
a) Department of Civil Engineering, Politeknik Negeri Bandung,
Gegerkalong Hilir Street, Bandung, 40559, Indonesia
*luthfi-mm[at]polban.ac.id
b) Faculty of Civil Engineering, Universiti Teknologi Malaysia,
Iman Street, Skudai Johor, 81310, Malaysia
Abstract
Concrete is widely used in construction, but it is prone to cracking, especially in unreachable areas. This research explores self-healing concrete (SHC) as a solution to automatically repair these cracks. Additionally, the research addresses the challenge of construction waste by investigating the use of recycled concrete as a substitute for coarse aggregate. The goal is to create an environmentally friendly concrete mix by incorporating effective microorganisms (EM4) and varying proportions of recycled concrete. The study examines the potential of SHC to heal by itself and evaluates the impact of these innovations on compressive strength. Key findings indicate the effectiveness of SHC in crack repair and the feasibility of using recycled concrete to enhance sustainability in construction.
