Gypsum and lime testing are crucial procedures in the construction industry, focusing on evaluating the properties and performance of gypsum and lime, two essential construction materials. These materials are used widely in numerous applications, from plastering to soil stabilization, making their quality vital for construction project outcomes.

The primary purpose of gypsum and lime testing is to ensure these materials conform to the required specifications and standards. It involves the assessment of various characteristics like fineness, setting time, compressive strength, soundness, and the presence of impurities. These attributes greatly influence the performance of gypsum and lime under different conditions and directly impact the integrity, durability, and efficiency of the structures where they are used.

Gypsum and lime testing offer several benefits. Firstly, they confirm the quality of gypsum and lime used in a construction project, promoting safer and more durable structures. Secondly, they help in determining the suitability of these materials for specific applications, optimizing their performance and longevity. Lastly, they lead to cost savings by minimizing the risk of structural failures that could necessitate expensive repairs or reconstruction.

Gypsum and lime testing should ideally be performed during their manufacturing process, upon their delivery to the construction site, and also during the construction process. This ensures that these materials maintain their quality throughout their lifecycle.

Below is the list of the most common cement tests that we undertake for our clients. All our tests are undertaken in accordance with either the British Standard of ASTM:


  1. Fineness Test: Measures the particle size distribution in the materials, affecting their reactivity and strength.
  2. Setting Time Test: Determines the time it takes for the materials to set and harden, which impacts their workability and application.
  3. Compressive Strength Test: Assesses the maximum load that the materials can bear without breaking, indicating their capacity to withstand loads.
  4. Soundness Test: Evaluates the potential for the materials to expand after setting, which could lead to cracking and failure.
  5. Consistency Test: Measures the quantity of water required to prepare a paste of standard consistency, influencing the workability of the materials.
  6. Purity Test: Checks for the presence of impurities, which could affect the performance of the materials.
  7. Heat of Hydration Test: Measures the amount of heat released during the hydration process, which can affect the setting time and strength development.
  8. Presence of Free Lime Test: Detects the unreacted lime in the materials, which could affect their durability and stability.
  9. Air Content Test: Assesses the volume of air trapped within the materials, impacting their density and strength.
  10. Dry Density Test: Measures the mass of the materials per unit volume when dry, affecting their strength and durability.

Please contact us for further details