What is difference between Target Strength and Target Mean Strength ???
As for required strength (Target strength) is given as (Characterstics strength + 1.64 * S.d).. this 1.64 may vary as depending on different criteria.
I had also seen some specs defining Target mean strength with totally...
For pavement design we have backfill material with ascending values of CBR, eg. subgrade CBR: 15 %, Aggregate Base 80%.
What will be effects if bottom layer has high CBR with respect to succeeding layer?
Also,I want to know what is significance of permeability of soil ??
Recently I come across 2 concrete core test results (tested in different dates) where 28 days strength was lower by 10 MPa to 7 days... I do not have any justification to it, only reason can be honeycomb or air voids, or low quality aggregates used for concrete.. but this cases are not...
Recently I come across 2 concrete core test results (tested in different dates) where 28 days strength was lower by 10 MPa to 7 days... I do not have any justification to it, only reason can be honeycomb or air voids, or low quality aggregates used for concrete.. but this cases are not...
