A major portion of the basic topographical feature is the rock. The rocks also comprise a major portion on and inside the Earth’s surface. This geographical aspect cannot be left behind when it comes to building construction. Apart from cement and bricks, rocks play a pivotal role in forming the basic structural component in buildings and other materials. The rocks are usually tested for measuring their strength and durability before using them for a purpose. The rocks can be tested with the help of a variety of procedures. Some of the procedures are performed in the laboratory also. The sample of rocks is usually tested under every possible condition. They are tested in high temperature, pressure, and more using different types of equipment.
Rock testing is usually carried out to determine the flexibility and durability of the rocks. It is useful to determine the degradation property of the rocks. This property is to be taken into consideration when they are used in specimens or other structures. There several compression, bending, and shear tests for the rocks in the laboratory using rock testing lab equipment.
Laboratory Tests for Determining Rock Strength:
- A type of laboratory compression test is performed to measure the durability and strength of the rocks. This test demands the utmost precision of rock pieces for accurate results. The pieces of rocks should be trimmed down to precise cylindrical shaped pieces post-explosion. The diameter of the pieces should be maintained within a specific ratio and dimension. The overall strength of the rocks is determined by finding out the peak load value.
- Another type of compression test is used to find out the rock strength. This triaxial form of compression test also involves the use of precise cylindrical rock pieces. Lateral pressure is given on the rock specimen, and the strength of the rock pieces is determined. The rock testing apparatus is designed in a specific way that they cater to every aspect related to the rocks as shear strength, flexibility, compressive strength, etc.
- A specific test called the splitting test is designed to depict the tensile strength of the rock pieces. It is also known as the Brazilian test. This test requires an application of definite load along the rock surface. The instrument gives the result in terms of tensile strength.
- Another important test depicting the strength of rocks is the bending test that measures the flexibility of rocks. It is obtained from the core rocks is the bending test. This is the test where a load is applied along with the rock piece. The load is applied until the piece bends. The actual tensile strength is given on the bottom part that gives the final result in tensile strength.
Conclusion– Laboratory tests determine strength rocks. This is important for measuring the durability of the rocks. The rocks find applications in different constructions like roads, railway tunnels, bridges, and other materials. The construction sites are responsible for maintaining the quality of the materials used in the construction. The superior quality of the rocks used for the purpose delivers high strength and durability to the concerned material.