Civil Engineering Today

  Tests on Building Stones The building stones are to be tested for their different properties. Following are such tests for the stones: (1) Acid test (2) Attrition test (3) Crushing test (4) Crystallization test (5) Freezing and thawing (6) Hardness test (7) Impact test (8) Microscopic test (9) Smith's test (10) Water absorption test. 1. Acid test - This test is carried out to understand the presence of calcium carbonate in building stone. A sample of stone weighing about 50 to 100 gm is taken. It is placed in a solution of hydrophobic acid having strength of one percent and is kept there for seven days. Solution is agitated at intervals. A good building stone maintains its sharp edges and keeps its surface free from powder at the end of this period. If the edges are broken and powder is formed on the surface, it indicates the presence of calcium carbonate, and such a stone will have poor weathering quality. This test is usually carried out on sandstones. 2. Attrition test - ...

  Building stones Stone is defined as the natural, hard substance formed from minerals and earth mineral are formed from rocks. Stones are formed through geological processes and are typically composed of minerals or mineral-like substances. Technically, the stones are called as rocks. The rocks occur in great variety. All building stones are rocks in nature, all rocks may not be useful as building stones. Stone is a natural building material that has been used for construction purposes for thousands of years. It is a hard, durable, and strong material that is formed from minerals and rocks found in the earth's crust. Stones are typically quarried from the earth and then cut into various shapes and sizes to be used in construction. Stones are used in a variety of building applications, including walls, floors, roofs, and decorative features. They are often used in historic and traditional buildings, as well as in modern construction projects. Some common types of stones used in bui...