concrete construction

concrete construction - DESIGN & CONTROL OF...

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Unformatted text preview: DESIGN & CONTROL OF CONCRETE MIXTURES Ch. 10,11, and 12 SPECIFICATIONS Performance Strength, slump and air content Prescription Mix proportions incl. cement, water, CA and FA (mineral and chemical admixtures) Mixed Similar to FDOT 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) READY MIX TRUCK CONCRETE MOBILE MIXER CONCRETE PUMP SHOTCRETE CONCRETE SLIPFORM PAVER CONCRETE MEDIAN BARRIER CURB AND GUTTER 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 MOISTENING AND COMPACTING SUBGRADE 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 ERECTING FORMWORK AND STEEL 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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concrete construction - DESIGN & CONTROL OF...

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