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Risk Reduction. Introducing Synthetic Pozzolan. Global Cement Forecast. Image reprinted with permission from the Portland Cement Association. What are SCM? Supplementary Cementitious Materials. Image reprinted with permission from the Portland Cement Association. - PowerPoint PPT PresentationTRANSCRIPT
Risk ReductionIntroducing Synthetic Pozzolan
April 24, 2023 Titel2
Global Cement Forecast
Image reprinted with permission from the Portland Cement Association
April 24, 2023 Titel3
What are SCM?Supplementary Cementitious
Materials
Substitution of clinker in cement by another material which has Cementitious properties
Image reprinted with permission from the Portland Cement Association
SCMsCategories
– Hydraulic– Pozzolonic
Classifications– Natural – Synthetic– Waste Material
Benefits– Environmentally friendly sustainable products– Lower Fuel Consumption– Lower Operating Costs– Lower Capital Costs
Typically Used SCM
Fly Ash Silica Fume
Slag
April 24, 2023 Titel6
Clays Based SCMs
Q (t, T)
Q (t, T)
Crystalline Clay– Organized Structure– Stable / Non-reactive
Amorphous Material– Disordered– Highly Pozzolonic
Collapsed Clay– Partially Crystalline– Stable / Non-reactive
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Calcination / Activation
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Clay Based SCMs
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Clay Based SCMs• Final strength• Low early strength• Color• Water demand• Emissions (Process)
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Laboratory StudySynthetic Pozzolan With the objective of identifying potential to produce a synthetic pozzolan from
a given clay:
– Sample Preparation– Chemical and mineralogical characterization– Physical testing– Activation utilizing calciner process– Color control of product– Grinding and physical testing of synthetic pozzolan
• Compressive strength testing at three substitution rates (20, 30 and 40%)
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Direct Substitution
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Blend Optimization• Clinker is engineered for Ordinary Portland Cement
• Blended Cement can mimic Ordinary Portland Cement
• High substitution rates require different parameters
• Optimization of physical and chemical properties required
Blended Cements ~ Ordinary Portland Cement
April 24, 2023 Titel13
Market Acceptance• Mobile Plant
– Pilot scale Pozzolan Calciner System– 5 MTPD capacity– Fully integrated / Self-sustainable (Plug-and-Play concept)– Simple set-up & operation
• Advantage– Hands-on experience– Product produced with available raw materials– Capacity to achieve consumers acceptance
• Investment– <1% of Industrial Installation
April 24, 2023 Titel14
The Mobile Plant
April 24, 2023 Titel15
Thank You