CHLORIDE PENETRATION INTO MORTAR FOR NON-DESTRUCTIVE DETERMINATION OF THE CHLORIDE BINDING ISOTHERM

Ultramicro determination of chloride.

A simple technique has been described by Wigglesworth (1937) for the determination of chloride in as little as 0-3 ,ul. of fluid. This is based on the Volhard titration and has been used in this Laboratory since 1947 for the examination of fish and crustacean blood. While the results obtained were satisfactory, the tedious back titration and the comparatively impermanent end point were found to...

Vii. the Penetration of Electrolytes into Gels. I. the Penetration of Sodium Chloride into Gels of Agar-agar

Measurement and Modeling of the Ability of Crack Fillers to Prevent Chloride Ingress into Mortar.

A common repair procedures applied to damaged concrete is to fill cracks with an organic polymer. This operation is performed to increase the service life of the concrete by removing a preferential pathway for the ingress of water, chlorides, and other deleterious species. To effectively fulfill its mission of preventing chloride ingress, the polymer must not only fully fill the macro-crack, bu...

Influence of Chloride-Ion Adsorption Agent on Chloride Ions in Concrete and Mortar

The influence of a chloride-ion adsorption agent (Cl agent in short), composed of zeolite, calcium aluminate hydrate and calcium nitrite, on the ingress of chloride ions into concrete and mortar has been experimentally studied. The permeability of concrete was measured, and the chloride ion content in mortar was tested. The experimental results reveal that the Cl agent could adsorb chloride ion...

Modeling Chloride Penetration in Saturated Concrete

A mathematical model is established for chloride penetration in saturated concrete. The model takes into account various influential parameters such as water-to-cement ratio, curing time, types of cement, and aggregate content. Two material models are developed for binding capacity and chloride diffusivity, which have a dominant effect on the chloride diffusion process. The chloride binding cap...