Improvement of rigid pavement performance using microbial agent

Abstract EN

Cracking is the most difficult problem for rigid pavement, not only because it affects the mechanical properties, but also because it affects the road's durability and service life.

this paper aims to improve the rigid pavement efficiency, as well as construct a bacterial consortium that can make the concrete to repair itself.

a concrete slab with dimensions of 750 x 750 x 200 mm was used in a laboratory case study.

bacillus flexus Mk-FYT-3 and bacillus haynesii MK-NW-9 were identified using 16s as bacillus flexus MK-FYT-3 and bacillus haynesii MK-NW-9, respectively, for the laboratory BIO-concrete mixture and deposited to genbank under accession numbers mn965692 and mn965693.

these isolates were able to grow at 60 °C with an optimum temperature of 40 °C, showed an ideal growth at PH of 10, and were capable of producing CACO3.

under static loading, the bio-concrete slab performed significantly better than the control one.