ARTHROBACTER NICOTIANAE KNUC2100 AND A CEMENT ADDITIVE FOR DURABILITY IMPROVEMENT AND CRACK REPARING OF CEMENT PASTE OR CONCRETE CONTAINING THE SAME

摘要

PURPOSE: Arthrobacter nicotianae KNUC2100 strain is provided to repair cracks of a cement or concrete structure by sealing when the cracks are treated with a culture liquid of the strain. CONSTITUTION: A novel microorganism Arthrobacter nicotianae KNUC2100 (KCTC12148BP) has an antifungal activity and forms calcium carbonate. The strain has 16S rDNA gene with a base sequence of sequence number 1. A cement additive for enhancing cement paste or concrete and repairing cracks contains the strain.