(in Polish)
R. Wójcik,
M. Tunkiewicz
Volume 535: Issue 3
Pages 28-31
Accepted for publication: 20.02.2017
Implementation of a research program aimed to determine the impact of moisture buffering of mortar plaster on the microclimate of premises requires monitoring of the moisture content of moving conditions of front moistening, as well as reversion of the zone of moisture drying into the material. On the example of the capillarity in wall coverings made of plasterboard, silicate and lime-perlite, etc. tested a number of measurement methods. A fully satisfactory results, confirmed by gravimetric measurements were obtained using the contactless method of operating on the basis of registration of changesin the absorption of radiation emitted near infrared band. On the example of the analysis of the distribution of moisture by capillarity using a material directly in contact with the water, and in terms of a hygroscopic intake of moisture from the air the accuracy achieved in various ranges of humidity was rated, ie. from a material saturated with water to equilibrium moisture in the air-dry state. Other tested measurement methods operating on the principle of resistance measurement, the dielectric constant or absorption of microwave radiation did not give possibility of monitoring the time-varying moisture content. Described in the article, the experiment showed full usability of radiometric methods.
Keywords:non-contact method measurement, capillary action, moisture, internal plasters, infrared radiation.
Keywords:non-contact method measurement, capillary action, moisture, internal plasters, infrared radiation.
- Boström Bernt. 2002. „Measurement of dynamic moisture gradients in z-direction”. Hagersten. Fibro System AB.
- Burns Donald A., Emil W. Ciurczak. 2008. Handbook of Near-Infrared Analysis. Third Edition. Boca Raton. CRC Press.
- Camino M. S., F. J. León, A. Llorente, J. M. Olivar. 2014. „Evaluation of the behavior of brick tile masonry and mortar due to capillary rise of moisture”. Materiales de Construcción Vol. 64, No 314.
- Hall Christopher, William D. Hoff. 2000. Water transport in brick, stone and concrete. London. E. & F. N. Spon.
- Janota Jerzy. 2015. „Pomiar wilgotności materiałów sypkich metodą bliskiej podczerwieni”. Akademia Automatyki 4.
- Marynowicz Andrzej, Jerzy Wyrwał. 2005. Badanie właściwości wilgotnościowych wybranych materiałów budowlanych w warunkach izotermicznych. Warszawa. PAN. [7] Pogorzelski Jerzy A. 1976. Fizyka cieplna budowli. Warszawa. PWN.
- Rirsch Eric, Zhongyi Zhang. 2010. „Rising damp in masonry walls and the importance of mortar properties”. Construction and Building Materials Vol. 24, Issue 10: 1815 – 1820.
- Wójcik Robert. 2002. „Pomiary wilgotności przegród budowlanych”. Materiały Budowlane (8).
- Wójcik Robert. 1999. Wpływ temperatury i wilgotności na współczynniki kinetyczne dyfuzji i termodyfuzji betonu komórkowego. Praca doktorska. Politechnika Łódzka Wydział Budownictwa i Architektury.
- dr hab. inż. Robert Wójcik, prof. UWM, Uniwersytet Warmińsko-Mazurski w Olsztynie, Wydział Geodezji, Inżynierii Przestrzennej i Budownictwa
- mgr inż. Maria Tunkiewicz, Uniwersytet Warmińsko-Mazurski w Olsztynie, Wydział Geodezji, Inżynierii Przestrzennej i Budownictwa
dr hab. inż. Robert Wójcik, prof. UWM