Self-Healing Concrete by Microorganisms in the Altered Pozzolan of Madagascar with Calcium from Crab Wastes. Am. J. Educ. Technol. [Internet]. 2023 Jan. 16 [cited 2026 Jun. 13];2(1):1-9. Available from: https://e-pallipublishers.com/index.php/ajet/article/view/1061