concrete construction - DESIGN&CONTROLOFCONCRETE MIXTURES...

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DESIGN & CONTROL OF CONCRETE  MIXTURES Ch. 10,11, and 12
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SPECIFICATIONS Performance  Strength, slump and air content Prescription Mix proportions incl. cement, water, CA and FA  (mineral and chemical admixtures) Mixed Similar to FDOT
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BATCHING, MIXING,  TRANSPORTATION AND HANDLING  CONCRETE Batching by weight and volume Mixing Ready Mixed Concrete- by weight ASTM C-94 Concrete Mobile Mixer - by volume ASTM C-685 Transporting & Handling Wheelbarrows and buggies Belt Conveyors, Buckets, Pumps and Tremies Shotcrete (Wet and Dry) Paving machines (low slump)
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READY MIX TRUCK
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CONCRETE MOBILE MIXER
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CONCRETE PUMP
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SHOTCRETE
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CONCRETE SLIPFORM PAVER
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CONCRETE MEDIAN BARRIER
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CURB AND GUTTER
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PLACING  CONCRETE Preparation Moistening subgrade Compacting subgrade Erecting forms & setting reinforcing steel Depositing concrete As close as possible to its intended place of rest Horizontal layers of uniform thickness to prevent  segregation. Consolidating Concrete Vibration - electric or pneumatic Internal External forms, screeds and tools
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MOISTENING AND COMPACTING  SUBGRADE
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PLACING  CONCRETE Preparation Moistening subgrade Compacting subgrade Erecting forms & setting reinforcing steel Depositing concrete As close as possible to its intended place of rest Horizontal layers of uniform thickness to prevent  segregation. Consolidating Concrete Vibration - electric or pneumatic Internal External forms, screeds and tools
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ERECTING FORMWORK AND STEEL
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PLACING  CONCRETE Preparation Moistening subgrade Compacting subgrade Erecting forms & setting reinforcing steel Depositing concrete As close as possible to its intended place of rest
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