Urban Workbench: the height of the specimen at the beggining of the test was25.4mm,and the diameter was 63.5mm.the moist specimen weighed 140g and the water content was determined to be 19%.Estimate the comperison index and pre condosilation pressure from thr e-log a' curver Give2.7.

Thursday, August 12, 2021

the height of the specimen at the beggining of the test was25.4mm,and the diameter was 63.5mm.the moist specimen weighed 140g and the water content was determined to be 19%.Estimate the comperison index and pre condosilation pressure from thr e-log a' curver Give2.7.

SOLUTION:

We will use second formula

A = area

= specific gravity

= unit weight of water

= ? = * 100

= 26.6

= 140 – 26.6

= 113.4g

Area = A = 31.669

= 2.7

= 1g/

=

= 1.326 cm

*Sr . No*	*Pressing*	*Final height*		*e =*
1	0	*2.540*	*1.214*	*0.9155*
2	*0.5*	*2.519*	*1.193*	*0.8996*
3	*1.0*	*2.5*	*1.174*	*0.8854*
4	*2.0*	*2.428*	*1.102*	*0.8311*
5	*4.0*	*2.322*	*0.996*	*0.7511*
6	*8.0*	*2.206*	*0.88*	*0.664*
7	*16.0*	*2.09*	*0.764*	*0.576*

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