Compressive testing is a method used to determine the behavior of materials under compression. This test measures how much a material can withstand forces that push or squeeze it together. Common materials tested include concrete, metals, and plastics. The results help engineers and designers understand the material's strength and durability. During compressive testing, a sample is placed in a machine that applies pressure until it deforms or breaks. The maximum load the material can bear before failure is recorded. This information is crucial for applications in construction, manufacturing, and other fields where material strength is essential for safety and performance.