Methods, materials and workmanship are among the main ingredients of any concrete floor. And the true test of how well these are applied usually comes only with time. Nevertheless, there are basic procedures to be followed to achieve a good, hardwearing top surface of a concrete floor. One of the first considerations is determining the essential wearing requirements of the floor. Naturally, the durability needs of an industrial plant floor or concrete airport runway are more extreme than those of a simple basement slab. And although we are all aware of the importance of the water/cement ration, we should all be equally aware of the fact that the ultimate compressive strength of concrete has a direct relationship to its wear resistance. The lower the strength of the concrete the poorer will be its wear resistance under equal conditions of finishing and the result will always be a dusty, crumbling floor. Even a properly designed and finished concrete floor has its limitations. For instance, plain concrete will be affected by alternate cycles of freezing and thawing, even if salts or chemicals are not present. In order to overcome some of the natural limitations of a concrete floor, the practicality of a specific surface treatment the achieve the desired effect of wear resistance has proven very successful. Concrete surface treatments can perform a variety of finishing tasks. For example, there is a selected iron aggregate treatment which "hardens" the surface by depositing soft or ductile iron on the top. Another plus for the iron aggregate material is that it will act as a thermal and electrical conductor. Floor sealers are another way to improve the floor. A floor sealer deposits a surface film onto a concrete floor much like varnish acts on a wood surface. This film cover accomplishes several things. It penetrates and binds porous cement and aggregates. Minor irregularities and surface pores are filled up. Once completed, the sealer produces a surface that is very easy to clean compared to an untreated floor. And the material acts a dustproofer in that if functions as an adhesive binder for loose powdery concrete.