Testing evaporation from permeable Pavement cross-sections at different temperatures (32ºF, 56ºF, 86ºF )
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Hi guys,
The experiment I am setting is to test the impact of variations in atmospheric temperatures on the hydrologic behavior of 5 types of Permeable Pavement Systems (Drainage, Detention , Evaporation) at different atmospheric temperatures ( 32 F, 56F, 86F): I have these problems :
1- Evaporation :
a- How can I eliminate the interference of Relative humidity from the experiment I am conducting, I will be using an exhaust fan to encourage the evaporation in the lab, but I dont want to have different rellative humidities at the temperatures at which I am conducting my experiment ?
b- I will be measuring daily evaporation by weighing the samples every day , the difference of the readings will be assumed to be the evaporated amount. bt the problem, how can I weigh 150 Kg (330 Ib) sample with a precision of (1-5 grams), since evaporation will be occuring in small amounts, a s expected 10 grams will be evaporated daily, so how can I measure this amount ? – I dont have enough budget to buy high precision balance, even so, it will be difficult to find a balance with 330 ib capacitiy having a precision of 1 gram ?
Thank you in advance !
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Replies
Zubaidi,
I wonder if this is the right site for your questions. Maybe you should try https://www.geotechdata.info/geotest/geotest.html or https://www.mygeoworld.com/groups.