Code: | EC0041 | Acronym: | PMAT |
Keywords | |
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Classification | Keyword |
OFICIAL | Materials |
Active? | Yes |
Responsible unit: | Construction Materials Division |
Course/CS Responsible: | Master in Civil Engineering |
Acronym | No. of Students | Study Plan | Curricular Years | Credits UCN | Credits ECTS | Contact hours | Total Time |
---|---|---|---|---|---|---|---|
MIEC | 6 | Syllabus since 2006/2007 | 5 | - | 5 | 60 | 133 |
Acquisition of technician-scientific knowledge in the domain of the Materials Pathology, namely the characterization of the properties that in a more direct way relate with its deterioration, the study of the agents and mechanism of alteration, the characterization of the main degradations and study of methods and techniques of prevention, protection and repairing.
1. INTRODUCTION TO THE MATERIALS PATHOLOGY. Definition of pathology. Pathological process. Direct and indirect causes in a pathological process. Concepts of repairing, restoration and rehabilitation. Prevention. 2. POROUS NETWORK. 2.1. Characterization - porous structure, porosity and porosimetry. 2.2 Processes of fluid transmission (diffusion, capillarity and permeability) and evaporation. 3. TECHNIQUES OF SUPPORT TO THE DIAGNOSIS. 3.1. Cartography of deteriorations. 3.2. Optical polarised microscopy. 3.3. X-ray diffraction. 3.4. Scanning electron microscopy. 4. CONCRETE PATHOLOGY. 4.1. Introduction - Main symptoms and causes of the degradation of a hardened concrete structure. Environmental exposition. 4.2. Physical processes of degradation of the hardened concrete. 4.2.1. Fictions that occur in the concrete - the plastic retraction, plastic nesting and movements during the construction. 4.2.2. Fictions that occur in hardened hard - the application of loads and imposed deformations. 4.2.3. Variations of temperature. 4.2.4. Cycles frost/defrost. 4.2.5. Erosion for abrasion and cavitation. 4.3. Chemical processes of degradation of the hardened one. 4.3.1. Attack by acids. 4.3.2. Attack by ammonium and magnesium. 4.3.3. Attack by water. 4.3.4. Attack by sulphates. 4.3.5. Attack by alkali. 4.3.6. Eflorescense. 4,4. Biological processes of degradation of the stone. 4.5. Corrosion of the armors. 4.5.1. Mechanism of the corrosion of the armors and its effect. 4.5.2. Processes that provoke the de-passivation of the armors - chloride carbonation, leaching and penetration. 4.5.3. Types of corrosion - located, generalized and under tension. 4.6. Prevention - 4.6.1. Of the used materials thickness and, quality composition hardened of covering. 4.6.2. Execution, cure and quality control of the hardened one. 4.6.3. Project Recommendations - conception and geometry of the structural elements. 4.7. Protection. 4,7,1, Direct protection of the steel - coverings and cathodic protection. 4.7.2. Indirect protection through hardened repairing mortars, coverings, extraction of the ions chloride, re-alkalinization and inhibitors of corrosion. 4.7.3. Processes of repairing. 5. MORTARS. 5.1. Main deteriorations. 5.2. Repairing mortars. 5.3. Study of the composition. 6. STONE PATHOLOGY. 6.1. Introduction. 6.2. Properties of the rocks that in a more direct way relate with deteriorations. 6.3. Aggressive agents and their actions. 6.3.1. Water. 6.3.2. Soluble salts. 6.3.3. Gases. 6.3.4 Wind . 6.3.5. Temperature. 6.3.6. Ice . 6.3.7. Living creatures. 6.4. Main types of deteriorations. 6.4.1. Granular disintegration. 6.4.2. Plates. 6.4.3. Flakes . 6.4.4. Black crusts. 6.4.5. Thin black layers. 6.4.6. Efflorescense. 6.4.7. Dissolutions. 6.4.8. Biological colonization. 6.5. Localization of the deteriorations in the buildings. 6.6. Responsible mechanisms for the genesis of deteriorations. 6.7. Cleaning treatments. 6.7.1. Dry and wet mechanical treatments. 6.7.2. Systems of water projection under pressure. 6.7.3. Systems of particles projection. 6.7.4. Application of chemical products. 6.7.5. Application of laser rays. 6.8. Treatments of conservation. 6.8.1. Desalinization. 6.82. Consolidation . 6.8.3. Hydrofugation. 6.8.4. Consolidation-hydrofugation . 6.9. Treatments of protection. 6.9.1. Treatments against birds. 6.9.2. Biocide treatments. 6.9.3. Anti-graffiti treatments. DEMONSTRATION OF THE SYLLABUS COHERENCE WITH THE CURRICULAR UNIT'S OBJECTIVES: The built patrimony is in more or less degraded state, being necessary a diagnosis to execute a successful repair. A proper diagnosis should include a detailed inspection, eventually a sample collection to analyze and test to find the agents and mechanisms responsible for the deterioration processes. These studies will lead to proposals for repair intervention.
Theoretical expositions, practical lessons in laboratory and the Centre of Studies of Materials of the University of Oporto (scanning electron microscopy) and visits of study.
Designation | Weight (%) |
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Teste | 100,00 |
Total: | 100,00 |
Designation | Time (hours) |
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Estudo autónomo | 60,00 |
Frequência das aulas | 60,00 |
Total: | 120,00 |
Achieving final classification requires compliance with attendance at the course unit, according to the MIEC assessment rules. It is considered that students meet the attendance requirements if, having been regularly enrolled, the number of absences of 25% for each of the classes’ types is not exceeded.
Sum of the classifications obtained in the two mini-tests, multiplied by the telative weigths (50& each). For the approval is required a minimum classification of seven points in each mini-test, in a twenty points basis.
Proficiency in Portuguese; Previous attendance of introductory graduate courses in the scientific field addressed in this module; Evaluation by exam.
Students who did not obtain approval via the two mini-tests, final exam may use one or the two parts corresponding to the subjects of the two mini-tests.
Estimated working time out of classes: 4 hours