The cement cube test is used to determine the compressive strength of hydraulic cement and other mortars. This quality is very important for almost all cement and mortar applications, especially when relating to infrastructure. Because compressive strength plays such a large role in cement mortar functionality and success, many different tests are used to analyze this characteristic. The test results can then be used to determine compliance with specifications, such as ASTM C109 and ASTM C780. These and similar ASTM test methods emphasize the importance of using care in closely observing the testing procedures used to verify requirements.

Masonry mortars composition can include the following cementitious materials: Portland cement, hydraulic cement, masonry cement, slag cement, quicklime, hydrated lime and lime putty. Aggregates may consist of natural or manufactured sand. Admixtures may also include accelerators, water repelling compounds, pigmentation, retarding and air entrainment solutions.