Most often, a special solution is used to repair cracks. In the sale of building stores there are ready-made kits. They include spiral rods, mixing spatula, mortar, application gun with various nozzles, trowels and other details. Epoxy sealant is also effective in repairs. Before you buy the necessary materials, study the article https://www.pomwaterproofing.ca/cracks-in-basement-floor/ . In it you will find quality tips for repairing cracks!