Stone is one of the most widely used and common building materials that have been used since the past, in other words Natural stones are usually used as building materials for construction, interior and exterior facades of buildings and office centers buildings are used.To obtain building stones, 2 main processes take place: Cutting ؛ in the section of cutting stone blocks extracted from the mine with various dimensions and weighing between 8 and 20 tons, during several The cutting stage and caliber become two tile and slab products. resin and sub؛ In the processing department, to achieve high quality on the surface of the stone, it is needed after caliber and pre-sub. Stone formation, holes, cavities and cracks in it, if needed, filled by Filling materials and then In the processing sector, it is necessary to achieve high quality on the surface of the stone From the caliber and pre-sanding of the stone, the holes, holes and cracks in it, if needed, are filled by filling materials and Then its surface should be sanded or subbed. In terms of mechanical factors, building stones have brittle properties and They are brittle, which is due to the presence of cracks and holes in them, and it is necessary to improve the strength of the stone and its appearance quality. The holes and joints in the surface of the stone should be filled with filling material. In this study, the effect of 3 types of cement fillers, polyester and ultraviolet during freeze and thaw on the physical and mechanical properties of building stones such as travertine and limestone We examined. In this regard, the desired samples are mentioned with fillers and without fillers entered 30 freeze and thaw cycles, after every 5 freeze and thaw cycles, the physical and mechanical properties of the samples such as porosity,capillary water absorption, Uniaxial compressive strength and wave speed were tested and eva‎luated according to the respective standards, and the results showed In general, the fillers improve the quality and reduce the damage of the samples during the freeze and thaw cycles. Ultraviolet fillers have performed better Among the eva‎luated properties of the samples, capillary water absorption has been the most damaged This reason was considered as the most critical destructive parameter among the investigated properties in this research.

راحب باقرپور

راحب باقرپور , محمد عطايي