Moisture Storage and Transport in Concrete

Lutz H. Franke, Dr.-Ing., is retired Professor of Engineering in and former head of the Insitute for Construction Materials, Buildiung Physics and Building Chemistry at the Hamburg University of Technology.

Preface

SURFACE ENERGETIC PRINCIPLES FOR MOISTURE STORAGE IN POROUS MATERIALS
Introduction
Surface-Energy and Spreading of Liquids on Solid Surfaces
Basic Equations for Liquid Absorption in Material Pores
Sorptive Storage on Material Surfaces and on the Inner Surface of Pore Systems

REAL PORE STRUCTURE AND CALUCLATION METHODS FOR COMPOSITION PARAMETERS
Illustration of the Pore Structure of Selected Materials
Calculations on Porosity, Degree of Hydration and Material Densities

BASIC EQUATIONS FOR THE DESCRIPTION OF MOISTURE TRANSPORT
Moisture Flows at the Volume Element
Base Modeling of Moisture Transport
Structure of the Simulation Program

EXPERIMENTAL INVESTIGATIONS WITH REGARD TO THE MODELING OF MOISTURE TRANSPORT IN MORTARS AND CONCRETE
Preliminary Remarks on Moisture Storage
Concrete Data for the Experimental Investigations
Hysteretic Moisture Storage Behavior as Important Issue with Respect to Modeling
Water Storage Behavior under Changing Moisture Boundary Conditions with Consideration of the Air-Pore Content
Adsorption and Desorption Isotherms
Results on Capillary Water Absorption Depending on Initial Water Content and Time

MODELING OF MOISTURE TRANSPORT TAKING INTO ACCOUNT SORPTION HYSTERESIS AND TIME-DEPENDENT MATERIAL CHANGES
Preliminaries
Modeling of Capillary Transport
Modeling of Vapor Transport and Drying by Evaporation of Concrete
Realistic Modeling of Drying by Evaporation for Ceramic Bricks, Calcium Silicate Products and Porous Concrete

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