If the carved pits turned out to be larger, then it is necessary to add small gravel or a small section for the best bunch of concrete to the solution of the mixture. Before pouring, cut pits need high -quality from dirt and dust so that the new concrete is tightly fastened to the walls of the concrete floor. When kneading the mortar mixture, it is recommended to use the cement of brand 500, which tends to harden quickly, which makes work faster.
