The data below are from a loading increment in a consolidation test. The thickness of the specimen at time t=0 is 25.4 mm. The specimen is drained from both top and bottom. Using the square-root of time method, the time for 90% consolidation is most nearly:

given the above data 90% consolidation would be =22.86

Explanation:

For the above to be feasible we need to have the original thickness divided by the total percentage which is 100 then multiplied by the new percentage which is 90% since t is at the origin , i.e t=0.

The Consolidation test: is used when we wish to determine the rate and magnitude of  consolidation when it is restrained laterally and loaded axially.

explanation:  

an electrode is a metal whose surface serves as the location where oxidation-reduction equilibrium is established between the metal and what is in the solution.