Durability of concrete: ability to resist weathering action, chemical ...

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Permeability of Aggregate Reason: • Some aggregates have much higher permeability than the cement paste because their capillary pores are much larger. • Most of the capillary porosity in a mature cement paste lies in the range 10 to 100 nm, while pore size in aggregates are, on average, larger than 10 microns. CE 60 Instructor: Paulo Monteiro
Permeability of Aggregates Type of Rock Permeability (cm/sec ) dense trap 2.47 x 10 -12 quartz diorite 8.24 x 10 -12 marble 2.39 x 10 -10 granite 5.35 x 10 -9 sandstone 1.23 x 10 -8 CE 60 Instructor: Paulo Monteiro
Page 1 and 2: Durability Durability of concrete:
Page 3 and 4: Water in the Capillary CE 60 Instru
Page 5 and 6: Permeability of Cement Paste •Age
Page 7: Permeability of Aggregate • Compa
Page 11 and 12: Physical Causes of Concrete Deterio
Page 13 and 14: 3. Deterioration by Frost Action Pr
Page 15 and 16: 3. Deterioration by Frost Action Ai
Page 17 and 18: This image cannot currently be disp
Page 19 and 20: Factors Controlling Frost Resistanc
Page 21 and 22: Consequence CE 60 Instructor: Paulo
Page 23 and 24: Effect of High Temperature •Effec
Page 25 and 26: Electrochemical Process of Steel Co
Page 27 and 28: Carbonation of Concrete Painting wi
Page 29 and 30: ASR Chemistry 1) The high pH in the
Page 31 and 32: ASR Optical Image CE 60 Instructor:
Page 33 and 34: ASR Damage Examples Built in 1965,
Page 35 and 36: Sulfate Attack Importance • Sulfa
Page 37 and 38: Expansion of Concrete • When conc
Page 39 and 40: Expansive Reaction • C 3 A + 3C$H
Page 41 and 42: Sodium Sulfate Attack • Na 2 SO 4
Page 43 and 44: Factors Influencing Sulfate Attack
Page 45: ACI Building Code 318 • Severe at

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