|
|
cross-sectional loss of the pitting corrosion; |
|
|
radius of the origin steel reinforcement without corrosion; |
|
|
maximum depth of the pitting corrosion; |
|
DCL
|
depth of corrosion layer; |
|
DCF
|
depth of concrete cover filled with the corrosion products; |
|
|
maximum value of DCF; |
|
|
threshold thickness of corrosion layer; |
|
|
equivalent depth of the concrete cover; |
|
|
capillary porosity of cementitious matrix of the concrete cover; |
|
|
internal radius of the cylinder; |
|
|
central angle corresponding to the corrosion zone around the steel reinforcement; |
|
w/c
|
ratio of water to cement; |
|
Acp
|
area of corrosion products; |
|
|
volumetric expansion factor of the corrosion products; |
|
|
tension strain of the concrete induced by the corrosion products; |
|
pcorr
|
corrosion pressure induced by the corrosion products; |
|
|
corrosion pressure in the concrete at the radius rs along the radius direction; |
|
|
hoop stress at the radius rs; |
|
c1
|
external radius of the cylinder; |
|
|
Young’s modulus of concrete; |
|
|
cracked section of the concrete cover; |
|
|
non-cracked section of the concrete cover; |
|
|
elastic stress of the concrete cover with inner crack; |
|
|
peak tensile stress of the concrete; |
|
|
critical radius corresponding to the internal radius of the non-cracked cylinder. |
|
|
hoop stress at a generic radius r; |
|
a, b
|
coordinates of the intersection point of the two softening lines; |
|
w
|
width of the corrosion-induced crack; |
|
|
peak of the corrosion-induced crack corresponding to zero tensile strength; |
|
|
total elongation of the concrete cover; |
|
n
|
number of corrosion cracks; |
|
|
width of the corrosion-induced crack; |
|
|
average value of the corrosion-induced crack; |
|
|
deformation of the concrete induced by the corrosion products; |
|
|
ratio of the crack area filled with the corrosion products; |
|
|
ratio of hook stress and the radial stress; |