Methods for moisture storage and transport property determination of autoclaved aerated concrete

• Autorzy: Scheffler G. A. , Plagge R.
• Konferencja: 5th International Conference on Autoclaved Aerated Concrete "Securing a sustainable future" to be held at Bydgoszcz to celebrate 60 years of AAC experience in Poland, Bydgoszcz, September 14-17, 2011
• Języki publikacji: EN

Abstrakty

EN

The hygric performance of autoclaved aerated concrete is a key determinant for many other material properties as e.g. thermal conduction, carbonation or shrinkage behavior. Laboratory determination of hygric material properties, i.e. moisture storage and moisture transport, is hence a prerequisite and a standard in production and process supervision. In that context, prediction and simulation of the hygric material performance based on numerical calculation models has become a widely used research and design tool. However, for assessment of the material behavior under variable climatic conditions, the hygric material properties have to be determined in a first step. In a second step, these properties have to be transformed into the non-linear coefficients required by these numerical calculation models. This paper is the first out of two focusing on the first step. It introduces different methods for moisture property determination. The methods cover the full range of possible moisture stages. Moisture storage and moisture transport is distinguished. For moisture transport, vapor and liquid phase transport is considered by different direct and indirect methods. The methods are applied for an aerated autoclaved concrete. The obtained data is shown and discussed. In a second step, described in a second paper, this data is used to derive the non-linear material functions required for sophisticated numerical simulation of the hygric material performance.

Słowa kluczowe

EN

autoclaved aerated concrete; sorption performance; moisture transport; test method

PL

transport wilgoci; metoda badań; beton komórkowy; właściwości sorpcyjne

• Wydawca: Fundacja Cement, Wapno, Beton
• Czasopismo: Cement Wapno Beton
• Rocznik: 2011
• Tom: nr spec.
• Strony: 70--77
• Opis fizyczny: Bibliogr. 37 poz., il.

Twórcy

autor

Scheffler G. A.

autor

Plagge R.

• Xella Technologie- und Forschungsgesellschaft, Section of Applied Research and Building Physics, Hohes Steinfeld 1, 14797 Kloster Lehnin, Germany

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