TL;DR: A review of current technologies for inspecting brick, concrete, and vitrified clay sewer systems, including the results of three experimental investigations, is given in a tabular form that lists the applications, advantages, and disadvantages of each technique as mentioned in this paper.
Abstract: The National Research Council Canada has recently completed a project to assist the city of Montreal in determining the condition of its water and sewer system. The National Research Council Canada staff members reviewed available and developing diagnostic techniques for both systems, conducted experiments on nondestructive evaluation methods and provided general scientific advice during the course of the project. This paper presents a review of current technologies for inspecting brick, concrete, and vitrified clay sewer systems, including the results of three experimental investigations. The results of the review are given in a tabular form that lists the applications, advantages, and disadvantages of each technique. Current and developing technologies are described that will supplement or replace closed circuit television inspection for determining the condition of sewer pipes through inspection of their internal pipe walls. In addition, techniques that allow sewer operators to investigate the pipe wal...
TL;DR: In this article, a comparative life cycle analysis (LCA) is performed for six different types of wastewater pipe materials: composite fiber reinforced polymer (FRP), PVC, high density polyethylene (HDPE), ductile iron, vitrified clay, and reinforced concrete.
TL;DR: In this paper, a hydrophobic-like interaction between platelets and nano-bubbles on the edges of clay crystals was proposed. But this interaction may be induced by the presence of nano-bubbles existing on the edge of clay particles, which may cause clay particles to flocculate.
TL;DR: In this paper, the authors present a classification of structural clay products based on their properties: 1.1. Structure of Disilicate Minerals, 2.2.3.4.5.6.
Abstract: 1. History and Classification.- 1.1. Early History.- 1.2. Industrial Revolution.- 1.3. Scientific Revolution.- 1.4. Classification of Structural Clay Products.- References.- 2. Mineralogical Composition of Structural Clay Products.- 2.1. Structure of Disilicate Minerals.- 2.2. Classification of Disilicate Minerals.- 2.3. Essential Minerals.- 2.4. Nonessential Minerals.- 2.5. Typical Compositions.- References.- 3. Raw Materials and Processing.- 3.1. Mining.- 3.1.1. Exploration for Raw Materials.- 3.1.2. Testing and Evaluation of Deposits.- 3.1.3. Mining Procedures.- 3 1 4 Mining Pollution Controls.- 3.2. Raw Material Processing.- 3.3. Particle-Size Distribution.- 3.4. Dust Pollution Controls.- 3.5. Blending and Additives.- References.- 4. Forming of Structural Clay Products.- 4.1. Structure and Properties of Water.- 4.2. Clay-Water Interaction.- 4.3. Plasticity of Clays.- 4.4. Plastic Forming Methods.- 4.4.1. Plasticity in Forming.- 4.4.2. Soft-Mud Process.- 4.4.3. Stiff-Mud Process.- 4.4.4. Plastic Pressing.- 4.4.5. Cutting of Extruded Columns.- 4.4.6. Automatic Hacking of Bricks.- 4.4.7. Dry-Press Forming.- References.- 5. Drying Process.- 5.1. Fundamentals of Drying Clay Bodies.- 5.2. Shrinkage, Stresses, and Strength.- 5.3. Practical Drying Schedules.- 5.4. Types of Dryers and Energy Sources.- 5.4.1. Periodic and Continuous Dryers.- 5.4.2. Energy Sources.- 5.5. Heat Balance in Dryers.- 5.6. Scum Development.- References.- 6. Firing Process.- 6.1. High-Temperature Reactions in Disilicate Minerals.- 6.2. Reactions in Typical Clay Bodies.- 6.3 Influences of Kiln Atmospheres.- 6.3.1. Kiln Atmospheres.- 6.3.2. Oxidation-Reduction.- 6.3.3. Oxidation of Carbon and Pyrite.- 6.3.4. Color Development and Control.- 6.4. Types of Kilns.- 6 5 Kiln Firing.- 6.6. Burner System.- 6.7. Cooling Stresses.- References.- 7. Decoration, Panels, and Packaging.- 7.1. Sanded Surfaces.- 7.2. Texturing of Extruded Bricks.- 7.3. Coating Decorations.- 7.3.1 Engobes and Slurries.- 7.3.2. Glazes.- 7.4. Panelling.- 7.5. Packaging.- References.- 8. Jointing of Vitrified Clay Sewer Pipe.- 8.1. Factory Installed Jointing Units.- 8.2. Requirements for Good Joints.- 8.3. Types of Compression Joints.- 8.3.1. Polyvinyl Chloride Joints.- 8.3.2. Polyester Joints.- 8.3.3. Polyurethane Joints.- 8.3.4. Jointing of Plain-End Pipes.- 8.4. Specifications and Tests for Vitrified Clay Pipe Joints.- References.- 9. Quality Control.- 9.1. Philosophy.- 9.2. Nature of the Quality-Control Program.- 9.3. Procedure.- 9.4. Statistical Approach.- References.- 10. Plant Layout and Design.- 10.1. Predesign Planning.- 10.2. Factors Affecting Plant Design.- 10 3 Planning for Starting the Plant.- References.- 11. Serviceability and Durability.- 11.1. Serviceability of Structural Clay Products.- 11.2. Durability of Bricks and Roofing Tiles.- 11.3. Durability of Sewer Pipes.- 11.4. Moisture Expansion.- 11.5. Bonding of Mortar to Bricks and Tiles.- 11 6 Efflorescence and Staining of Brickwork.- 11.7. Cleaning Brickwork.- References.- 12. Future Trends.- 12.1. Production.- 12.2. Technical Changes.- 12.3. Research of the Future.- 12 4 Summary.- References.
TL;DR: In this paper, a simplified three-dimensional finite element model of bell-spigot joints in vitrified clay pipelines is introduced, which allows the simulation of rotation, axial translation, and moment-release behavior at joints.