Concrete, repairing materialsand protective coating: Carbonation resistance (NT BUILD 357)

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  • Report #: NT BUILD 357
  • Approved: September 1989
  • Hits: 0

Abstract

SUMMARY

The resistance against CO2-penetration through concrete repairing materials and concrete protective coating is determined by an accelerated laboratory test on laboratory prepared samples by exposing the samples to carbon dioxide enriched air in order to evaluate the effect of concrete repairing materials. The depth of CO2-penetration is measured by the phenolphthalein method.

SCOPE

This method specifies an accelerated laboratory test procedure in which the resistance against CO2-penetration through concrete repairing materials or concrete protective coating can be determined in order to evaluate the effect of concrete repairing materials. It consists of monitoring the rate of carbonation of specimens exposed to an atmosphere of 3 % carbon dioxide and 55 - 65 % relative humidity.

FIELD OF APPLICATION

The method can be used to compare both concrete, mortar or concrete protective coatings.

Categories

NT Methods | Building

Nordtest

Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.