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Methods for measuring relative humidity (RH) in concrete floors - development and uncertainties

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Author

Editor

  • Klaus Kupfer

Summary, in English

An RH method was proposed in the late 1970s to replace the traditional CM-method in Sweden and from 1984 the RH-method is the dominating method to measure moisture in concrete floors before applying a moisture sensitive floor covering. The required total uncertainty must be smaller than 2-3 % RH depending on the method used. The paper describes the historical development of RH measurements in concrete materials and structures as such and the development in Sweden for concrete floors during some 30 years. A number of decisive parameters are discussed and quantified such as sampling techniques, sample size, sample properties, moisture capacity of sensors and probes, calibration, drift of sensors and various temperature effects.

Publishing year

2010

Language

English

Pages

406-413

Publication/Series

First European Conference on Moisture Measurement

Document type

Conference paper

Topic

  • Materials Engineering

Keywords

  • relative humidity
  • concrete floors
  • samples
  • holes

Conference name

Aquametry 2010

Conference date

2010-10-05 - 2010-10-07

Conference place

Weimar, Germany

Status

Published