PASTEURIA, BACILLUS SPHAERICUS, AND BACILLUS SUBTILIS BACTERIA ADDITION EFFECT ON SELF-HEALING CONCRETE COMPRESSIVE STRENGTH
DOI:
https://doi.org/10.26740/rekats.v13n02.p320-327Keywords:
Self Healing Concrete, Pasteuria, Bacillus Sphaericus, Bacillus SubtillisAbstract
Concrete is the most commonly used material for building houses due to its low production cost, strength,
and durability. One of the most frequent issues encountered is cracking, which results in additional repair costs.
An alternative solution is to incorporate bacteria such as Pasteuria, Bacillus Sphaericus, and Bacillus Subtilis
into the concrete structure. This research used a quantitative method conducted in a laboratory by controlling the
test objects. Based on previous studies, the addition of these bacteria involves preparing large containers as
concrete chambers. The concrete used is that which has undergone compressive strength testing in the laboratory,
with data obtained at the 28-day curing period. Data collection was carried out by allocating each type of bacteria
to six specimens per container. In one container, four bacterial isolates were mixed with 72 liters of water and six
prepared specimens. The specimens were then left until the surface dried. The compressive strength test was
conducted again, and the results were compared with the initial test results to determine the percentage of
compressive strength recovery. The study concluded that Bacillus Subtilis was the most effective bacteria among
the three in optimizing concrete compressive strength recovery.
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