Multi-Scale Modeling of Structural Concrete

by Maekawa; Koichi

• ISBN13: 9780415465540
• ISBN10: 0415465540
• Edition: 1st
• Format: Hardcover
• Copyright: 2009-01-20
• Publisher: CRC Press

Summary

Increases in computer power have now enabled engineers to combine materials science with structural mechanics in the design and the assessment of concrete structures. The techniques developed have become especially useful for the performance assessment of such structures under coupled mechanistic and environmental actions. This allows effective management of infrastructure over a much longer life cycle, thus satisfying the requirements for durability and sustainability. This ground-breaking new book draws on the fields of materials and structural mechanics in an integrated way to address the questions of management and maintenance. It proposes a realistic way of simulating both constituent materials and structural responses under external loading and under ambient conditions. Where the research literature discusses component or element technology related to performance assessment, this book uniquely covers the subject at the level of the whole system including soil foundation, showing engineers how to model changes in concrete structures over time and how to use this for decision making in infrastructure maintenance and asset management.

Table of Contents

"Introduction "Multi-phase, Multi-Chemo-Physical Modelling of Structural Concrete

Basic computational scheme

Multi-scale modelling

Numerical simulation

Practical Application

"Hydration of Cement in Concrete

Multi-component hydration model of cement minerals and pozzolans

Strength development modelling of cement hydration products

"Micro Pore-Structure and Moisture

Basic modelling of micro pore-structure of cement hydrates

Basic modelling of moisture transport and thermodynamic equilibrium

Extended modelling of temperature-dependent micro pore-structure

Extended modelling of temperature-dependent moisture transport and equilibrium

"Transport of Carbon Dioxide and Carbonation

Simplified modelling of carbonation

Enhanced modelling of carbonation

"Calcium Ion Transport and Leaching

Modelling of calcium leaching from cement hydrates

Analysis and verification

Extended modelling of cemented soil

Leaching model of calcium from cemented soil

General verification

"Chloride Ion Transport and Corrosion

Chloride binding capacity of cementitious materials

Modelling of Chloride ion transport

Modelling of steel corrosion in concrete

"Time-Dependent Mechanics of Cement Hydrates

Moisture in micro-pores and time-dependency

Unified solidification model of cementitous composites "long-term nonlinearity

Multi-chemo physics of creep for cement hydrates

Verification of cement hydrates

Mechanical nature of aggregates

"Time-Dependent Mechanics of Structural Concrete

Elasto-plastic and fracturing model in compression "short-term nonlinearity

Time-dependent softening of RC beams in flexure

Post peak collapse analysis

Cyclic cumulative damaging and modelling in compression

Short-term cyclic damaging of RC structures

Long-term constitutive model of cracked concrete

Long-term time-dependent structural responses

"Structural Mechanics of Damaged Concrete Strcutures

Multi-mechanics of corrosive substances and concrete (micro-level)

Critical corrosion for cover cracking

Multi-mechanics of corrosive substances and structural concrete (meso-level)

Structural performance of damaged RC members "corrosion cracking

Structural performance of damaged RC members "anchorage of stirrups"

Structural performance of damaged RC members "anchorage of main reinforcement

"Fatigue Life of Structural Concrete

Two-dimensional fatigue model of cracked structural concrete

Two dimensional verification : Extended truss model for 2D beams

Corrosive crack damage on fatigue

Three-dimensional fatigue model of cracked structural concrete

Fatigue of RC slabs and three-dimensional verification

Three-dimensional fatigue model of RC joint interface

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