An experimental study on the effect of chloride penetration on moisture diffusion in concrete

Title: An experimental study on the effect of chloride penetration on moisture diffusion in concrete
Author(s): A. Ababneh, Y. Xi
Paper category : journal
Serial title: Concrete Science and Engineering
Abreviated Serial title: Concr. Sc. Eng.
ISSN: 1295-2826
Publisher: RILEM Publications SARL
Volume: 4
Issue: 16
Issue date: 2002-12-01
Publication year: 2002
Pages: 659 - 663
Total Pages: 5
Nb references: 9
Language: English

Abstract: Chloride penetration and moisture diffusion are two
important transport processes for studying the long-term
durability of concrete.The chloride penetration and
moisture transfer in concrete are considered as two cou-
pled transport processes.An experimental study was
conducted for determining the related material parameters
in the coupled transport processes.For the coupled mois-
ture diffusion,we consider that the total moisture flux J (t) H
is resulted from two driving forces:the gradient of mois-
ture H ,and the gradient of free chloride C(f) ,that is,J(t) H =-
D H-H grad (H )-D H-Cl grad (C (f),).In this formulation,two
transport parameters are involved:the moisture diffusion
coefficient D H-H ,and the coupled moisture diffusion
coefficient due to chloride diffusion D(H-Cl.) .A seepage
test was designed specifically for determining the two
transport parameters.The test data showed that the chlo-
ride penetration accelerates the moisture diffusion signifi-
cantly.The two transport parameters were determined
using the present test data.The result showed that D(H-Cl)
is not a constant,but depends linearly on the free chloride
concentration.

Online publication: 2002-10-30
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00