GRANIT (MARBLE) ROAD AND SIDEWALK CURB - 636

In modern Russia, the dominant material for concrete curbs remain. The main advantage of concretecurbs - its relative cheapness. However, the use of granite curbs cost significantly more thanjustifiable. To seethis, it suffices to compare the strength, frost resistance, abrasion, waterabsorption. For allof these indicators is considerably inferior to the concrete curb granite. As you know, the most deadlyfor these products is a significant temperature drop, along with exposure tomoisture. It isworth mentioning hygroscopic, that is, to this indicator largely explains thefragility of the concrete curbs.Hygroscopic material is the ability to absorbwater. At thecurb, made of concrete, even with the use of special additives, which give thefrost-resistant properties, the rate is 3-4%. While the granite in theirproperties are not able to absorb more water than 0,2-0,45%. In the cold season, the waterturns into ice begins to break the board inside the stone. Cracks, chips, rock becomesbrittle, the process of destruction is accelerating.Initial cost savings ofturns for the purchase of new border stones, dismantling damaged and installingnew ones. Unfortunately,often the producers of concrete curbs in order to accelerate the production ofretreating from technology. It is expressed in the fact that instead of a long cooling of concretemix, it steamed in a special way. This can improve performance,but at the same time from the curb of the concrete is less frost. As a result, the first signsof the destruction of the border appear in the first year of operation, and itscomplete fracture occurs after 4-5 years. In the case of installation ofgranite curbs, the principle of "set and forget." Granite curbs, even after20-30 years, however, does not show any visible damage. If you are looking for aquality curb, granite stone - the best solution!