Durability of concrete: ability to resist weathering action, chemical ...
Durability of concrete: ability to resist weathering action, chemical ...
Durability of concrete: ability to resist weathering action, chemical ...
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Perme<strong>ability</strong> <strong>of</strong> Cement Paste<br />
•When porosity decreases from 40 <strong>to</strong> 30%,<br />
the perme<strong>ability</strong> drops from 110 <strong>to</strong> 20 x 10 -12<br />
cm/sec.<br />
•However, a decrease in porosity from 30%<br />
<strong>to</strong> 20% results in a small drop in<br />
perme<strong>ability</strong>.<br />
•Reasons:<br />
•Large pores are reduced in size and<br />
number.<br />
•There is creation <strong>of</strong> <strong>to</strong>rtuosity.<br />
CE 60<br />
Instruc<strong>to</strong>r: Paulo Monteiro
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