Materials Pathologies

Code:

EC0041

Acronym:

PMAT

Keywords
Classification	Keyword
OFICIAL	Materials

Instance: 2008/2009 - 1S

Active?	Yes
Responsible unit:	Construction Materials Division
Course/CS Responsible:	Master in Civil Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
MIEC	11	Syllabus since 2006/2007	5	-	5	60	133

Teaching language

Portuguese

Objectives

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.

Program

1. INTRODUCTION TO THE MATERIALS PATHOLOGY. Definition of pathology. Pathological process. Direct and indirect causes in a pathological process. Concepts of repairing, restauration and rehabilitation. Prevention. 2, POROUS WAYS. 2.1. Characterization - porous structure, porosity and porometry. 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 microscopy of polarized light. 3.3. Difraction of X rays . 3.4. Electronical microscopy of scanning. 4. PATHOLOGY OF THE HARDENED ONE. 4.1. Introduction - Main symptoms and causes of the degradation of a structure of hardened. Ambient exposition. 4.2. Physical processes of degradation of the hardened one. 4.2.1. Fictions that occur in hardened cool - 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 amonium and magnesium. 4.3.3. Attack by water. 4.3.4. Attack by sulfatos. 4.3.5. Attack by álcalis. 4.3.6. Eflorescenses. 4,4, Biological processes of degradation of the hardened one. 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 - argamasses of repairing, coverings, extraction of the ions chloride, realcalinization and inhibitors of corrosion. 4.7.3. Processes of repairing. 5. ARGAMASSES. 5.1. Main deteriorations. 5.2. Argamasses of repairing. 5.3. Study of the composition. 6. PATHOLOGY OF THE ROCK. 6.1. Introduction. 6,2, Properties of the rocks that in a more direct way relate with deteriorations. 6.3. Aggressive agents and its share. 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 disaggregation. 6.4.2. Plates. 6,4,3, Platelet . 6.4.4. Black crusts. 6.4.5. Black films. 6.4.6. Eflorescenses. 6,4,7, Dissolutions . 6.4.8. Biological settling. 6.5. Localization of deteriorations in the buildings. 6.6. Responsible mechanisms for the genesis of deteriorations. 6.7. Treatments of cleanness. 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. Desaltness. 6,8,2, Consolidation . 6.8.3. Hidrofugation. 6,8,4, Consolidation-hidrofugation . 6.9. Treatments of protection. 6.9.1. Treatments against doves excrements. 6.9.2. Treatments biocides. 6.9.3. Treatments antigraffiti.

Teaching methods and learning activities

Theoretical expositions, practical lessons in laboratory and the Center of Studies of Materials of the University of OPorto (electronic microscope of scanning) and visits of study.

Evaluation Type

Evaluation with final exam

Assessment Components

Description	Type	Time (hours)	Weight (%)	End date
Subject Classes	Participação presencial	72,00
	Total:	-	0,00

Special assessment (TE, DA, ...)

Proficiency in Portuguese;
Previous attendance of introductory graduate courses in the scientific field addressed in this module;
Evaluation by exam.

Observations

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Estimated working time out of classes: 4 hours