Compressive tests are laboratory procedures used to determine the behavior of materials under compression. In these tests, a sample is subjected to a controlled load until it deforms or fails. The results help engineers understand the material's strength, ductility, and overall performance in structural applications. These tests are commonly performed on materials like concrete, metals, and plastics. The data obtained from compressive tests is crucial for designing safe and effective structures, ensuring that materials can withstand the forces they will encounter in real-world conditions.