Jordan Journal of Civil Engineering

Consolidation Analysis by the Extended Taylor Method ( ETM )


Mohammed Shukri Al-Zoubi;


The Taylor t method is extended for improving the estimation of the end-of-primary (EOP) settlement  p and coefficient of vertical consolidation cv . The extended Taylor method (ETM) utilizes the same graphical procedure of the conventional Taylor method, but this procedure is repeated twice at any two U values greater than 52.6% instead of the one used in the Taylor method at 90%; U is the average degree of consolidation. The ETM explicitly relates v c to the slope of the initial linear portion of the t  - t curve as well as the EOP settlement p  ; t  is the settlement at time t during consolidation. The ETM can be applied with a minimum of four consolidation data points for estimating  p and cv . Two types of EOP settlements are distinguished; firstly, local EOP settlement  pi obtained by matching experimental results to theory at a particular U value; secondly, global EOP settlement  p obtained by extrapolation using two or more local EOP settlements. The ETM explains the observed differences in cv values estimated by the existing methods in terms of the differences in  p values obtained by these existing methods. Experimental results are used to validate and compare the extended Taylor method with the existing methods.


Taylor’s method, Casagrande’s method, Coefficient of vertical consolidation, End of primary settlement, Initial compression, Secondary compression.