part Part One: Microstructure and Mechanisms of Chemical Degradation I -- chapter 1 The Diagnosis of Chemical Deterioration of Concrete by Optical Microscopy -- chapter 2 Concrete Chemical Degradation: Ancient analogues and modem evaluation -- chapter 3 Pore Solution Analysis - Are there pressure effects? -- chapter 4 Microstructural Changes and Mechanical Effects Due to the Leaching of Calcium Hydroxide from Cement Paste -- chapter 5 Modelling the Calcium Leaching Mechanisms in Hydrated Cement Pastes -- chapter 6 Diffusibility Changes Due to the Presence of Chloride Ions -- chapter 7 The Dispertion of Silica Fume -- chapter 8 Fixation of Alkalis in Cement Pore Solutions -- chapter 9 Stress Due to Alkali-Silica Reactions in Mortars -- chapter 10 Durability of Alkali Activated Cementitious Materials -- chapter 11 Microstructural Changes of Hydrated Cement Paste Due to Carbonation -- chapter 12 Corrosion of Cementitious Materials in Acid Waters -- chapter 13 Improvements in the Durability of Cellulose Reinforced Cementitious Composites -- chapter 14 Corrosion of Tobermorite in Strong Chloride Solutions -- part Part Two: Corrosion of Reinforcing Steel -- chapter 15 Monitoring the Corrosion of Reinforcing Steel In Cement-based Systems Using Impedance Spectroscopy -- chapter 16 Microstructural Examination of the Development of Corrosion in Reinforced Concrete -- chapter 17 Behaviour of Steel in Simulated Concrete Solutions -- chapter 18 The Effect of Fluoride on the Corrosion Resistance of Steel in Concrete -- chapter 19 Early Detection of Corrosion of Reinforcing Steel in Structural Concrete -- chapter 20 Influence of the Service Load on Durability of Reinforced High Performance Concrete in Presence of Chloride -- part Part Three: Microstructure and Mechanisms of Chemical Degradation II -- chapter 21 Some Chemical And Microstructural Aspects of Concrete Durability -- chapter 22 Mechanisms of Degradation of Portland Cement-based Systems by Sulfate Attack -- chapter 23 Assessment of the Conditions Required for the Thaumasite Form of Sulphate Attack -- chapter 24 Deterioration of Concrete Bridge Piers in Iceland -- part Part Four: Implications of Curing Temperatures for Durability -- chapter 25 Implications of Curing Temperatures for Durability of Cement-based systems -- chapter 26 What Causes Delayed Ettringite Formation? -- chapter 27 Influence of Elevated Aggregate Temperature on Concrete Strength -- chapter 28 Numerical Simulation of the Effect of Elevated Temperature Curing on Porosity of Cement-based Systems -- chapter 29 Microchemical Effects of Elevated Temperature Curing and Delayed Ettingite Formation -- part Part Five: Durability of Non-Portland Cements -- chapter 30 Durability of Calcium Aluminate Cement Concrete: Understanding the evidence -- chapter 31 An Assessment of Ageing Calcium Aluminate Cement Concrete from Marine Structures -- chapter 32 Behaviour of Aluminous Cement in Highly Alkaline Media -- chapter 33 Durability of Alkali-activated Slag Cements -- chapter 34 Alkali Activated Cementitious Materials in Chemically Aggressive Environments -- chapter 35 Characteristics of Delayed Ettringite Deposits in ASR-ajfected Steam Cured Concretes -- part Part Six: Cementitious Waste Forms and Performance of Concrete Barriers for Nuclear Waste Management -- chapter 36 Chemical Evolution of Cementitious Materials with High Proportion of Fly Ash and Slag -- chapter 37 Role of Carbonation in Long-term Performance of Cementitious Wasteforms -- chapter 38 Chemical Attack on Cement in Nuclear Repositories -- chapter 39 Modelling the Long-term Durability of Concrete for Radioactive Waste Disposals -- chapter 40 Modelling of the Chemical Degradation of a Cement Paste -- chapter 41 Durability of Cement Stabilised Low Level Wastes -- chapter 42 C's Retention in Zeolites Immobilised by Portland Cement -- chapter 43 Formation of Zeolite in Mixes of Calcium Aluminate Cementand Silica Fume Used for Cesium Immobilization -- chapter 44 Stabilization of Simulated Alkaline Non-vitrifiable Low-level Radioactive Waste by Carbonate-bearing AFm and AFt Phases -- part Part Seven: Diffusion and Modelling -- chapter 45 Accelerated Tests for Chloride Diffusivity and their Application in Prediction of Chloride Penetration -- chapter 46 Mathematical Modelling of Chloride Diffusion in Concrete -- chapter 47 Degradation of Concrete Structures Due to Chemical Attack: Mathematical prediction -- chapter 48 Recent Developments in Measurement of Transport Properties in Cement-based Materials -- part Part Eight: Cementitious Waste Forms for Non-nuclear Applications -- chapter 49 Degradation Mechanisms of Cement-stabilised Wastes by Internal Sulfate Associated with the Formation of the U Phase -- chapter 50 Permeability and Leach Resistance of Grout-based Materials Exposed to Sulphates -- chapter 51 Response of Pb in Cement Waste Forms During TCLP Testing.

Deterioration of cement-based materials is a continuing problem, as it results in the substantial shortening of the lives of conventional concrete structures. The main costs result from poor performance and the need for early repair. With more advanced applications, where very long service lives are essential, such as the storage of nuclear waste, an understanding of the degradation processes in order to predict long term performance is very important. this book forms the proceedings of the latest Symposia at the Materials Research Society Autumn meeting in Boston.