Cube Mold Testing: Procedure, Sizes & IS Standard for Cement/Concrete

 

Cube mold testing is one of the most trusted methods to check cement/concrete compressive strength. It uses a cement testing cube mould to cast concrete cubes, cure them properly, and test them in a compression machine. The most commonly used cube mould 150mm size is followed on most Indian sites and labs as per IS standards.







✅ Cube Mold Testing Procedure (Step-by-Step)

  1. Clean & oil the mould to prevent sticking.

  2. Fill the cube mould in 3 layers and compact each layer (tamping rod/vibrator).

  3. Level the surface and mark sample details.

  4. Keep cubes undisturbed for 24 hours.

  5. Remove cubes and transfer for curing.





⏳ Curing Time

Standard curing is done in clean water at controlled temperature:

  • 7 Days → early strength result

  • 28 Days → final strength result (most important)

🏗️ Machine Used

Cube strength is tested using a Compression Testing Machine (CTM). The cube is placed centrally and load is applied gradually until failure.

📌 Results Interpretation

  • Result is shown in N/mm² (MPa)

  • Higher MPa = stronger concrete

  • Compare test value with required grade (M20, M25, M30 etc.)

  • Ensure cube mould tolerance as per IS standard to avoid wrong results.

If you’re searching for a reliable cube mould manufacturer in India or cube mould supplier, Looking for a trusted cube mould supplier? Get IS standard tolerance cube moulds directly from a cube mould manufacturer in India — Enquire today.

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