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Portland cement clinker microstructure C 3 S, C 2 S, C 3 A, C 4 AF

Portland cement clinker microstructure C 3 S, C 2 S, C 3 A, C 4 AF. 200 micron. Course admin. 18 h lectures Course text: CALLISTER MATERIALS SCIENCE AND ENGINEERING 5TH EDN, WILEY, 2000 Selected chapters: 1-16, 18, 20 Tutorials from Week 5 Tutorial problems from Week 4

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Portland cement clinker microstructure C 3 S, C 2 S, C 3 A, C 4 AF

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  1. Portland cement clinker microstructure • C3S, C2S, C3A, C4AF 200 micron

  2. Course admin • 18 h lectures • Course text: • CALLISTER • MATERIALS SCIENCE AND ENGINEERING • 5TH EDN, WILEY, 2000 • Selected chapters: 1-16, 18, 20 • Tutorials from Week 5 • Tutorial problems from Week 4 • Supplementary material on web • Feedback etc: christopher.hall@ed.ac.uk • vicky.pugsley@ed.ac.uk

  3. Course admin: website You will find course documents at www.cmse.ed.ac.uk/MSE3/mse3.html

  4. Summary • To provide a broad introduction to the materials used in engineering, • their properties and structures • Module objectives On completing the module, students should • Be familiar with • the major classes of engineering materials • the mechanical, thermal and chemical properties of engineering materials, their definition, measurement and specification • Be able to locate material property data • Understand in qualitative terms the physical basis of material structure of the principal engineering properties of materials • Be familiar with • elementary concepts of ferrous metallurgy • the concepts of electrochemical corrosion • the major polymeric materials and their use as solid polymers, coatings, foams and adhesives • the main types of ceramics, cements and glasses used in engineering • the main materials processing operations

  5. Thermal properties cluster • Thermal expansivity  • Thermal conductivity  • Specific heat capacity c • Melting temperature Tm • … others?? • CALLISTER Ch 20 [5th edn]

  6. Quiz 19 Jan 09 • What is the melting temperature of iron?

  7. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C

  8. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the density of iron?

  9. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the density of iron? 7 900 kg/m3

  10. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the density of iron? 7 900 kg/m3 • What is the density of gold?

  11. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the density of iron? 7 900 kg/m3 • What is the density of gold? 19 300 kg/m3

  12. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the density of iron? 7 900 kg/m3 • What is the density of gold? 19 300 kg/m3 • What is the density of air?

  13. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the density of iron? 7 900 kg/m3 • What is the density of gold? 19 300 kg/m3 • What is the density of air? 1.2 kg/m3

  14. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the thermal expansivity of brass? 20  10-6 K-1 • What is the density of iron? 7 900 kg/m3 • What is the density of gold? 19 300 kg/m3 • What is the density of air? 1.2 kg/m3 • What is the Young’s modulus of steel?

  15. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the thermal expansivity of brass? 20  10-6 K-1 • What is the density of iron? 7 900 kg/m3 • What is the density of gold? 19 300 kg/m3 • What is the Young’s modulus of steel? 200 GPa

  16. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the density of iron? 7 900 kg/m3 • What is the density of gold? 19 300 kg/m3 • What is the density of air? 1.2 kg/m3 • What is the Young’s modulus of steel? 200 GPa • What is the thermal expansivity of brass?

  17. Quiz 10 Jan 08 • What is the melting temperature of iron? 1540 °C • What is the density of iron? 7 900 kg/m3 • What is the density of gold? 19 300 kg/m3 • What is the density of air? 1.2 kg/m3 • What is the Young’s modulus of steel? 200 GPa • What is the thermal expansivity of brass? 20  10-6 K-1

  18. Iron density

  19. Iron density bcc 912 °C fcc

  20. Explosive spalling in concrete under fire conditions • Quartz... • Major constituent of granite, quartzite and other mineral aggregates used in concrete • Alpha-beta quartz transition • Displacive structural transition • 573 °C • 2 % INCREASE in volume   See Tucker, Keen and Dove, Min Mag 2001, 65, 489-507

  21. Invars • Iron-nickel alloys with exceptionally • low thermal expansivity •  about 0.4  10-6 / K

  22. Quiz 6 Feb 04 • What is the effect of porosity on • thermal expansivity? • density? • thermal conductivity? • elastic modulus? • strength?

  23. Quiz 6 Feb 04 As Ap • What is the effect of porosity on • thermal expansivity? • density? • thermal conductivity? • elastic modulus? • strength?

  24. Density • Define volume fraction porosity f • f = Volume voids/Total volume • Bulk density • b = s(1 - f ) • where s is solid density

  25. Density • Density relation is a simple example of • the Law of Mixtures for material properties • Composite material A, B • with volume fractions fA,fB • Xcom = fAXA + fBXB

  26. Quiz 6 Feb 04 As Ap • What is the effect of porosity on thermal expansivity? • How does  vary with f ? •  is independent of f

  27. Thermal conductivity • Defining equation • q =   dTdx • where q is the heat flux • Units w (m K) • Typical values and range • 1000 --- 0.01 w (mK) • See for example Ashby charts

  28. Thermal conductivity • Correlations with other properties • speed of sound • elastic modulus

  29. Thermal conductivity • Correlations with other properties • For metals • electrical conductivity • Wiedemann-Franz law • ratio of electrical to thermal conductivity • is the same for all metals • at a given temperature

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