1 / 30

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

laasya
Download Presentation

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

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related