Chapter 2 - Supplementary Cementitious Material
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Transcript of Chapter 2 - Supplementary Cementitious Material
Supplementary Cementitious Materials
Dr. Safeer AbbasAssistant Professor
Civil Engineering DepartmentUET Lahore, Pakistan
Supplementary Cementing Material2
• A material, when used in conjunction with portland cement, contributes to the properties of concrete through hydraulic and/or pozzolanic reaction.
• Fly ash, Silica fume, Slag and natural pozzolans
Supplementary Cementing Material3
Pozzolanic Reaction: Effect 14
Pozzolanic Reaction: Effect 15
Pozzolanic Reaction: Effect 16
Pozzolanic Reaction: Effect 27
Physical filler effect
Silica Fume (SF)8
Very fine non-crystalline silica produced in electric arc furnaces as a byproduct of the production of elemental silicon or alloys containing silicon; also known as condensed silica fume or microsilica.
Silica Fume9
Silica Fume Product Forms10
Silica Fume11
Silica Fume Colors12
Silica Fume Grain Size13
Silica Fume: Physical Properties14
Comparison of Silica Fume15
Reduction in CH with Silica Fume16
Strength with Silica Fume (SF)17
Durability Improvements with Silica Fume18
Durability Improvements with Silica Fume19
Silica Fume: Chloride Penetration20
Silica Fume Shotcrete21
Silica Fume increases Workability22
Fly Ash23
Specifications and Classes of Fly Ash24
Microstructure of Fly Ash25
Filler effect of Fly Ash26
Hydration Products of Cementing Binders 27
Fineness of Fly Ash28
Pozzolanic Activity of Fly Ash29
Composition of Fly Ash30
Effect of Fly Ash on Workability31
Typical Concrete Bleeding Curve32
Effect of Fly Ash on Pumpability33
Effect of Fly Ash on Compressive Strength34
Permeability with Fly Ash35
Chloride Diffusion with Fly Ash36
Improved Durability Properties37
Slag38
Ground Granulated Blast Furnace Slag39
Specification and Grade of Slag40
SEM image of Slag41
Effect of Slag on Workability42
Mechanical Properties using Slag43
Strength development with Slag44
Natural Pozzolans45
Natural Pozzolans46
Natural Pozzolans: Rice Husk Ash (RHA)47
Effect of RHA on Strength48
Effect of RHA on Chloride Penetration49
Chemical Analysis of Supplementary Materials50
Questions and Assignments51
Discuss various types of supplementary materials available in Pakistan and its Characteristics. (Note: Put colour pictures)
Discuss properties of rice husk effects on concrete
Report and Power point Presentation Need to submit in GroupDue date: 16-09-2014