Ebook: Application of Fracture Mechanics to Cementitious Composites

Portland cement concrete is a relatively brittle material. As a result, mechanical behavior of concrete, conventionally reinforced concrete, prestressed concrete, and fiber reinforced concrete is critically influenced by crack propagation. It is, thus, not surprising that attempts are being made to apply the concepts of fracture mechanics to quantify the resistance to cracking in cementious composites. The field of fracture mechanics originated in the 1920's with A. A. Griffith's work on fracture of brittle materials such as glass. Its most significant applications, however, have been for controlling brittle fracture and fatigue failure of metallic structures such as pressure vessels, airplanes, ships and pipe­ lines. Considerable development has occurred in the last twenty years in modifying Griffith's ideas or in proposing new concepts to account for the ductility typical of metals. As a result of these efforts, standard testing techniques have been available to obtain fracture parameters for metals, and design based on these parameters are included in relevant specifications. Many attempts have been made, in the last two decades or so, to apply the fracture mechanics concepts to cement, mortar, con­ crete and reinforced concrete. So far, these attempts have not led to a unique set of material parameters which can quantify the resistance of these cementitious composites to fracture. No standard testing methods and a generally accepted theoretical analysis are established for concrete as they are for metals.

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Content:
Front Matter....Pages I-XI
Front Matter....Pages 1-1
Non-Linear Response of Concrete: Interaction of Size, Loading Step and Material Property....Pages 3-23
Fracture Process Zone of Concrete....Pages 25-50
Nonlinear Analysis for Mixed Mode Fracture....Pages 51-83
Front Matter....Pages 85-85
On the Cracking in Concrete and Fiber-Reinforced Cements....Pages 87-140
Fracture and Damage Mechanics of Concrete....Pages 141-156
Fracture Processes in Fibre Reinforced Cement Sheets....Pages 157-185
Some Aspects of Experimental Techniques....Pages 187-193
Front Matter....Pages 195-195
Continuum Model for Progressive Cracking and Identification of Nonlinear Fracture Parameters....Pages 197-246
Non-Linear Fracture Models for Discrete Crack Propagation....Pages 247-285
Interpretation of the Griffith Instability as a Bifurcation of the Global Equilibrium....Pages 287-316
Front Matter....Pages 317-317
Nonlinear Fracture Parameters for Cement Based Composites: Theory and Experiments....Pages 319-359
Size Effects in the Experimental Determination of Fracture Mechanics Parameters....Pages 361-397
Fracture Measurements of Cementitious Composites....Pages 399-429
Fracture Resistance Parameters for Cementitious Materials and their Experimental Determinations....Pages 431-449
Front Matter....Pages 451-451
Mechanics of Solids with a Progressively Deteriorating Structure....Pages 453-479
A Microstructural Approach to Fracture of Concrete....Pages 481-505
Application of Continuous Damage Mechanics to Strain and Fracture Behavior of Concrete....Pages 507-520
On a Continuum Modelling of Damage....Pages 521-531
Front Matter....Pages 533-533
Dynamic Effect in Concrete Materials....Pages 535-557
Tensile Fracture of Concrete at High Rates of Loading....Pages 559-590
Front Matter....Pages 591-591
Influence of Time on Crack Formation and Failure of Concrete....Pages 593-615
Rate of Loading Effects on the Fracture of Cementitious Materials....Pages 617-636
Front Matter....Pages 637-637
The Role for Fracture Mechanics in Conventional Reinforced Concrete Design....Pages 639-666
Improvements in Concrete Design Achieved Through the Application of Fracture Mechanics....Pages 667-680
Design Codes and Fracture Mechanics....Pages 681-694
Back Matter....Pages 695-714

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Content:
Front Matter....Pages I-XI
Front Matter....Pages 1-1
Non-Linear Response of Concrete: Interaction of Size, Loading Step and Material Property....Pages 3-23
Fracture Process Zone of Concrete....Pages 25-50
Nonlinear Analysis for Mixed Mode Fracture....Pages 51-83
Front Matter....Pages 85-85
On the Cracking in Concrete and Fiber-Reinforced Cements....Pages 87-140
Fracture and Damage Mechanics of Concrete....Pages 141-156
Fracture Processes in Fibre Reinforced Cement Sheets....Pages 157-185
Some Aspects of Experimental Techniques....Pages 187-193
Front Matter....Pages 195-195
Continuum Model for Progressive Cracking and Identification of Nonlinear Fracture Parameters....Pages 197-246
Non-Linear Fracture Models for Discrete Crack Propagation....Pages 247-285
Interpretation of the Griffith Instability as a Bifurcation of the Global Equilibrium....Pages 287-316
Front Matter....Pages 317-317
Nonlinear Fracture Parameters for Cement Based Composites: Theory and Experiments....Pages 319-359
Size Effects in the Experimental Determination of Fracture Mechanics Parameters....Pages 361-397
Fracture Measurements of Cementitious Composites....Pages 399-429
Fracture Resistance Parameters for Cementitious Materials and their Experimental Determinations....Pages 431-449
Front Matter....Pages 451-451
Mechanics of Solids with a Progressively Deteriorating Structure....Pages 453-479
A Microstructural Approach to Fracture of Concrete....Pages 481-505
Application of Continuous Damage Mechanics to Strain and Fracture Behavior of Concrete....Pages 507-520
On a Continuum Modelling of Damage....Pages 521-531
Front Matter....Pages 533-533
Dynamic Effect in Concrete Materials....Pages 535-557
Tensile Fracture of Concrete at High Rates of Loading....Pages 559-590
Front Matter....Pages 591-591
Influence of Time on Crack Formation and Failure of Concrete....Pages 593-615
Rate of Loading Effects on the Fracture of Cementitious Materials....Pages 617-636
Front Matter....Pages 637-637
The Role for Fracture Mechanics in Conventional Reinforced Concrete Design....Pages 639-666
Improvements in Concrete Design Achieved Through the Application of Fracture Mechanics....Pages 667-680
Design Codes and Fracture Mechanics....Pages 681-694
Back Matter....Pages 695-714
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