Items tagged with CEMENT Files

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Estimation of cement_binder profile parallel to the determination of chloride profile in concrete (NT TR 541)

NT TR 541

  • In this study, two methods for determination of calcium content parallel to the determination of chloride content have been proposed and evaluated for their precisions.

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An experimental comparison between isothermal calorimetry, semi-adiabatic calorimetry and solution calorimetry for the study of cement hydration (NT TR 522)

NT TR 522

  • This is the final report from NORDTEST project 1534-01 in which four Nordic and one US partners have made hydration measurements on two types of cement with different calorimetric methods.

File size: 477.01 KB Download

Measurement of heat of hydration of cement with heat conduction calorimetry (NT BUILD 505)

NT BUILD 505

  • This method directly measures the 3 or 7 days heat of hydration at 20oC on small samples of cement paste with water/cement-ratio 0.5. It can also be used as a basis for other types of measurements (Annex A).

File size: 102.42 KB Download

Cement: Heat of hydration (NT BUILD 480)

NT BUILD 480

  • This method is used to determine the heat of hydration of cement in mortar, during the hardening process. The test procedure is identical to NT Build 388 and gives a specification regarding the mix proportion of the tested mortar. The heat developed is described as the amount of energy produced for different maturity ages of the mortar. To be able to define the heat development as energy per mass unit of cement, it is necessary to know the heat capacity of the components in the mortar.

File size: 30.43 KB Download

Concrete, hardened: Chloride content by volhard titration (NT BUILD 208s)

NT BUILD 208s

  • This Nordtest method can be used for determination of the total chloride content in hardened concrete by dissolving the concrete dust in a solution of nitric acid followed by Volhard titration. Another possibility is to use potentiometric titration which gives better precicion and accuracy. This method is not described here.

File size: 54.11 KB Download

Concrete, hardened: Chloride content by volhard titration (NT BUILD 208)

NT BUILD 208

  • This Nordtest method can be used for determination of the total chloride content in hardened concrete by dissolving the concrete dust in a solution of nitric acid followed by Volhard titration. Another possibility is to use potentiometric titration which gives better precicion and accuracy. This method is not described here.

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”.