Publications

Pro024

From freezing and thawing pore water pressures to concrete stresses



Title: From freezing and thawing pore water pressures to concrete stresses
Author(s): V. Penttala
Paper category : conference
Book title: International RILEM Workshop on Frost Resistance of Concrete
Editor(s): M. J. Setzer, R. Auberg and H. - J. Keck
Print-ISBN: 2-912143-30-6
e-ISBN: 2351580370
Publisher: RILEM Publications SARL
Publication year: 2002
Pages: 147 - 160
Total Pages: 14
Nb references: 4
Language: English


Abstract: The objective of the research project is to calculate the pressures and stresses induced to moist concrete during freezing and thawing. The applied theory is based on thermodynamics and the theory of linear elasticity. If no additional salts are dissolved into pore water the inputs needed in the theory are relative humidity, temperature measured in the sample chamber and inside concrete, and evaporable water amount in the pore structure. Theoretical results were compared with test results made with two concretes cured under water or in 96% relative humidity. One of the concretes was airentrained and in the comparison concrete no airentraining agents were used. Four freezing and thawing cycles were applied and the minimum temperature in the sample chamber was -38o C.


Online publication: 2010-06-28
Publication type : full_text
Public price (Euros): 0.00