Aging Factors in 100 Years Old Concrete of Panamá Canal

Author(s): C. Andrade(1), N. Rebolledo(1), R. Perez(2) and M. Baz(2)
Paper category: Proceedings
Book title: Proceedings of the 71st RILEM Annual Week & ICACMS 2017,Chennai,India, 3rd -8th September 2017
Editor(s): Manu Santhanam
Ravindra Gettu
Radhakrishna G. Pillai
Sunitha K. Nayar
ISBN: 978-2-35158-196-4
ISBN: 978-2-35158-190-2 (Set)
e-ISBN: 978-2-35158-191-9:
Publisher: Published by RILEM Publications S.A.R.L.
Publication year: 2017
Pages: 258-267
Total Pages: 10
Language : English

Abstract: Chloride diffusion in concrete is accepted to progress by decreasing the diffusion coefficient
whose trend is known as “aging factor” which is the exponent of the decrease with time. The
study of the profiles of chlorides in very old concrete structures is of great importance in
order to be able to calibrate the current models of service life. In present work, results are
presented from cores drilled in the 100 years old Panama Canal that additionally has the
interest of the different salinities in the three chambers, from the ocean level to the Gatun
lake level of non-salty water. In the profiles was noticed the existence of a "skin" with a
chloride concentration lower than in the interior and also noticed is the effect of the different
salinities. The profiles allow calculating very similar diffusion coefficients from the values of
total or soluble chlorides in water. Finally, a theoretical exercise is carried out, which may
have been the reasonable age factor and therefore what could be the resistivity and the
diffusion coefficient of newly made concrete.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00