Concrete

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• Concrete
• Notable U.S. concrete projects:
• The Erie Canal
• Properties of Concrete
• Components of Concrete
• Portland Cement
• Three types of portland cement are used for agricultural applications:
• Type I
• Type II
• Type III
• Water
• Aggregates
• Admixtures
• Air Entraining agents:
• Retarding admixtures
• Accelerating admixtures
• Determing the proper mix
• Workability
• Durability
• Economy
• Minimizing water and cement requirements:
• Determining Aggregate Size:
• Water to Cement Ratio
• Curing
• Two general methods of curing can be used:
• Summary
• Teaching Ideas