Pengaruh Variasi Konsentrasi Bakteri Bacillus Subtilis Terhadap Sifat Mekanik…

ABSTRACT The use of concrete structures is the main choice for construction development, especially in the riau province. Concrete has several advantages and disadvantages. One of the shortcomings in concrete is cracks. The strength of concrete will decrease if there are cracks. One of the innovations that can overcome the problem is by utilizing bacteria as a concrete mixture material. Ba…