Measurement of Internal Strain in Cast-Concrete Structures.
Measurement of Internal Strain in Cast-Concrete
Stone, W. C.
Experimental Mechanics, Vol. 23, No. 4, 361-369,
structures; concretes; strain profiles; fabrication;
A practical method for experimentally measuring strain
profiles inside cast-concreie structures is presented.
The technique employs micro-embedment strain gages which
are oriented along paths of interest inside the
structural element prior to casDTting. Tests of numerous
post-tensioned concrete-box-girder anchorage elements,
and of large-scale pullout test specimens instrumented
with micro-embedment gages have shown good agreement
between the measured strains and those predicted by
means of detailed finite-element analyses within the
linear-elastic region of the material.