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) Clean & oil the mould to prevent sticking. Fill the cube mould in 3 layers and compact each layer (tamping rod/vibrator). Level the surface and mark sample details. Keep cubes undisturbed for 24 hours . 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 Inte...