SOUNDNESS TEST OF CEMENT BY LE-CHATELIER METHOD

AIM:-

• To determine the soundness of cement by Le-Chatelier method as per IS: 4031 (Part 3) - 1988.

APPARATUS:-

FIG : LE-CHATELIER'S TEST APPARATUS AND WATER BATH

Read More CEMENT NORMAL CONSISTENCY TEST 

1.  The apparatus for conducting the Le-Chatelier test should conform to IS: 5514 - 1969,
2. Balance, whose permissible variation at a load of 1000g should be +1.0g,
3. Water bath,
4. Gauging trowel conforming to IS: 10086 - 1982
5. Graduated jar to measure water.
6. Non Porous Plate,

TEMPERATURE & HUMIDITY:-

• The temperature of the gauging room, dry materials & water should be maintained at 27 ± 2 0 C & relative humidity required 65±5%.

Read More CEMENT INITIAL AND FINAL SETTING TIME 

PROCEDURE:-  

1. Place the mould on a glass sheet and fill it with the cement paste formed by gauging cement with 0.78 times the water required to give a paste of standard consistency,
2. Cover the mould with another piece of glass sheet, place a small weight on this covering glass sheet and immediately submerge the whole assembly in water at a temperature of 27 ± 2oC and keep it there for 24hrs.
3. Measure the distance separating the indicator points to the nearest 0.5mm (say d l ).
4. Submerge the mould again in water at the temperature prescribed above. Bring the water to boiling point in 25 to 30 minutes and keep it boiling for 3hrs.
5. Remove the mould from the water, allow it to cool and measure the distance between the indicator points (say d 2 ).
6. (d 2 – d l ) represents the expansion of cement.

RESULTS:-

• Calculate the mean of the two values to the nearest 0.5mm to represent the expansion of cement.

1. should not be more than 10mm.