@ Sathdikharan, What will be the drying time for the test samples before subsequent weight measurements?
@ Sakthidharan, Thanks
However, is there any specific dimension for the test samples?
All samples should have same dimension and weight, you can perform your experiment in moisture chamber.
I agree with SAKTHIDHARAN, you need to measure the weight change not dimensions change. Good luck.
I agree with the answers above, but would like to add that you should dry the composite after reaching the maximal water uptake again completely. It may be possible (depending on the composite) that some materials may be washed out of the composite during the water uptake in the beaker. In order to determine the absolute water uptake you will need to compare the dry weight of your samples before the water uptake and after.
I agree that you should use a humidity chamber, because it will be different to have moisture absortion or water uptake.
In my opinion, humidity chamber is more determining step than water immersion in the case of mechanical and physical performance due to migration of humidity which is more efficient and affect the material.
- @ Maria and Engin, please what is the standard procedure for carrying out test in a humidity chamber? Is it the same weight gain and weight loss procedure as in water immersion?
There are many standarts including ASTM and ISO. However, we use MIL-STD-810G Method 507.5 for humidity in the case of military realted materials or systems.
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