TY - GEN
T1 - Effect of the addition of sugar-cane bagasse ash on the corrosion risk of uncured mortars
AU - Maldonado-García, Marco A.
AU - Montes-García, Pedro
AU - Valdez-Tamez, Pedro L.
N1 - Publisher Copyright:
© fédération internationale du béton (fib).
PY - 2016
Y1 - 2016
N2 - In recent years a number of studies on Sugar-cane Bagasse Ash (SCBA) as a partial Portland cement replacement in concrete have been addressed. The research has focused on the pozzolanic activity and mechanical properties of mortars and concretes containing SCBA; however, the durability of such composites needs to be evaluated, especially when no-proper curing is applied. This research evaluates the effects of the SCBA on the corrosion risk of mortars with no curing. Cylinders and reinforced small-scale slabs with 0, 10 and 20% of SCBA as cement replacement, were cast. The effective chloride diffusion coefficients, Deff, were estimated and the slabs were exposed to wetting-drying cycles in a 3% NaCl solution for 2000 days. Corrosion potentials were processed using the FFT to estimate the corrosion initiation period. Results show that the SCBA decreases the Deff which in turn has the beneficial effect of diminishing the corrosion risk.
AB - In recent years a number of studies on Sugar-cane Bagasse Ash (SCBA) as a partial Portland cement replacement in concrete have been addressed. The research has focused on the pozzolanic activity and mechanical properties of mortars and concretes containing SCBA; however, the durability of such composites needs to be evaluated, especially when no-proper curing is applied. This research evaluates the effects of the SCBA on the corrosion risk of mortars with no curing. Cylinders and reinforced small-scale slabs with 0, 10 and 20% of SCBA as cement replacement, were cast. The effective chloride diffusion coefficients, Deff, were estimated and the slabs were exposed to wetting-drying cycles in a 3% NaCl solution for 2000 days. Corrosion potentials were processed using the FFT to estimate the corrosion initiation period. Results show that the SCBA decreases the Deff which in turn has the beneficial effect of diminishing the corrosion risk.
UR - http://www.scopus.com/inward/record.url?scp=85134851591&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:85134851591
SN - 9784990914806
T3 - fib Symposium
SP - 77
EP - 84
BT - Proceedings of the 11th fib International PhD Symposium in Civil Engineering, 2016
A2 - Maekawa, Koichi
A2 - Yamazaki, Jun
A2 - Kasuga, Akio
PB - fib. The International Federation for Structural Concrete
T2 - 11th fib International PhD Symposium in Civil Engineering, 2016
Y2 - 29 August 2016 through 31 August 2016
ER -