water absorption test of the required properties of stones

water absorption test

Procedure

Water absorption test For this test cube specimen consider about 50 grms is composed and the test is transferred out in the steps given below:

(a) Note the mass of dried specimen as W1.

 (b) put down the specimen in water for 24 hours.

 (c) Take out the specimen, wipe out the exterior with a piece of cloth and mass the specimen. Let its mass be W2. (d)

 Suspend the specimen freely in water and weigh it. Let its mass be W3.

(e) put down the specimen in boiling water for 5 hours. Then take it out, wipe the surface with a cloth and weigh it. Let this mass be W4. Then,

Formulas

Result of this test

 IS code has standardized the test procedure for different gradations of the specimen. Along with the specified mass of the specimen, a specified number of cast iron balls of 48 mm diameter are put down in the cylinder.

Then the cylinder is revolve at a rate of 30 – 33 rpm for specified number of times (500 – 1000).

 Then the aggregate is take off and sieved on 1.7 mm. IS sieve. The mass of aggregate passing is found. Then Los Angeles value is found as

       =mass of aggregate passing through sieve/ Original weight × 100

The following values are recommended for road works: For bituminous mixes – 30% For base course – 50%. Water absorption test

what is the procedure of water absorption test for stones?

Water absorption test For this test cube specimen consider about 50 grms is composed and the test is transferred out in the steps given below:
(a) Note the mass of dried specimen as W1.
 (b) put down the specimen in water for 24 hours.
 (c) Take out the specimen, wipe out the exterior with a piece of cloth, and mass the specimen. Let its mass be W2.
(d)Suspend the specimen freely in water and weigh it. Let its mass be W3.
(e) put down the specimen in boiling water for 5 hours. Then take it out, wipe the surface with a cloth and weigh it. Let this mass be W4. Then,

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