After it has set, cement must not undergo any appreciable expansion, which could disrupt a mortar or concrete. This property of soundness is tested by subjecting the set cement to boiling in water or to high-pressure steam. Unsoundness can arise from the presence in the cement of too much free magnesia or hard-burned free lime

This method covers determination of the autoclave expansion of Portland cement by means of a test of neat cement paste specimens, 25.4 X 25.4 X 285.8mm, which are moist cured for 24 hours +/- 1-1/2 hours and then exposed to action of steam under specified pressure for 3 hours. The rate at which pressure is increased in the beginning the test and released in the test are specified. Linear expansion is measured by micrometer comparator.

Standard Accessories:

• Special rack to hold specimens above water level in the autoclave and in vertical position
• Pressure gauge with calibration report with national traceability
• Silicon rubber Gasket
• Spanner

Accessories At Extra Cost:

• Length comparator with dial micrometer 0.002mm X 5mm
• shrinkage bar moulds(single/two/triple gang)
• PID Auto tuning Digital Temp. indicator cum controller with or without PC interface for data logging
• PID Auto tuning Digital Pressure indicator cum controller with or without PC interface for data logging
• Spare heater set
• Spare Silicon Gasket
• Spare Pressure gauge
• Spare safety valve

After it has set, cement must not undergo any appreciable expansion, which could disrupt a mortar or concrete. This property of soundness is tested by subjecting the set cement to boiling in water or to high-pressure steam. Unsoundness can arise from the presence in the cement of too much free magnesia or hard-burned free lime

This method covers determination of the autoclave expansion of Portland cement by means of a test of neat cement paste specimens, 25.4 X 25.4 X 285.8mm, which are moist cured for 24 hours +/- 1-1/2 hours and then exposed to action of steam under specified pressure for 3 hours. The rate at which pressure is increased in the beginning the test and released in the test are specified. Linear expansion is measured by micrometer comparator.

Standard Accessories:

• Special rack to hold specimens above water level in the autoclave and in vertical position
• Pressure gauge with calibration report with national traceability
• Silicon rubber Gasket
• Spanner

Accessories At Extra Cost:

• Length comparator with dial micrometer 0.002mm X 5mm
• shrinkage bar moulds(single/two/triple gang)
• PID Auto tuning Digital Temp. indicator cum controller with or without PC interface for data logging
• PID Auto tuning Digital Pressure indicator cum controller with or without PC interface for data logging
• Spare heater set
• Spare Silicon Gasket
• Spare Pressure gauge
• Spare safety valve