Risk Reduction
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Transcript of Risk Reduction
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Risk ReductionIntroducing Synthetic Pozzolan
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April 24, 2023 Titel2
Global Cement Forecast
Image reprinted with permission from the Portland Cement Association
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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
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SCMsCategories
– Hydraulic– Pozzolonic
Classifications– Natural – Synthetic– Waste Material
Benefits– Environmentally friendly sustainable products– Lower Fuel Consumption– Lower Operating Costs– Lower Capital Costs
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Typically Used SCM
Fly Ash Silica Fume
Slag
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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
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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
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The Mobile Plant
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Thank You