1. (e) One of the limitations of extending axis translation technique for measuring negativepore water pressure using null type pressure plate is:(i)Air diffusion occurs through the ceramic disk when the axis translation test is performed for along time period.(ii) Water losses from specimen when the test is performed for a long time period.(iii) Secondary consolidation arises when test is performed for a long period of time(iv) All the above (a, b and c)(v) None of the aboveThe ceramic disk used in the null pressure plate apparatus does not allow the air to flow; however,free flow water is possible. Explain the mechanism associated with this behavior. If the purpose ofceramic disk is not to allow the air out from it; how can the air come out from the specimen? Whatwill be the impact of such a phenomenon?

Answered: 1. (e) One of the limitations of…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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1. (e) One of the limitations of extending axis translation technique for measuring negative
pore water pressure using null type pressure plate is:
(i)Air diffusion occurs through the ceramic disk when the axis translation test is performed for a
long time period.
(ii) Water losses from specimen when the test is performed for a long time period.
(iii) Secondary consolidation arises when test is performed for a long period of time
(iv) All the above (a, b and c)
(v) None of the above
The ceramic disk used in the null pressure plate apparatus does not allow the air to flow; however,
free flow water is possible. Explain the mechanism associated with this behavior. If the purpose of
ceramic disk is not to allow the air out from it; how can the air come out from the specimen? What
will be the impact of such a phenomenon?

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Hi! Thank you for the question As per the honor code, We’ll answer the first question since the exact one wasn’t specified. Please submit a new question by specifying the one you’d like answered in the remaining questions.

To quantify the matrix suction of undisturbed and remoulded soil samples, the null type, axis translation approach is usually used.

The effect of air diffusing via the high air entrance disc is investigated as a function of soil qualities and measuring equipment parameters.

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