I would like some information on paving concrete outside (driveway) with the concrete being heated in winter. Heating will be done with hot water. The concrete will be 12 by 50 feet. What pound concrete should I use and what thickness. Should I put wire in for reinforcement?
The thickness of your 12 by 50-foot driveway should be 6 inches. There is no need for reinforcing steel. Cut two equally spaced control grooves about 1 1/4 inches deep into the wet concrete. The mix should be one sack of air-entraining portland cement, 2 cubic feet of sand and 3 1/2 cubic feet of 3/4-inch gravel or stone. Use no more mixing water than needed to obtain a plastic mix (4 1/2 gallons of water per sack of cement). If you order from a ready mixed concrete plant, call for air-entrained concrete containing 6 sacks of cement per cubic yard, using 3/4-inch maximum size aggregate and water proportioned to give you a 2- to 4-inch slump concrete. For your driveway 12 feet by 50 feet by 6 inches thick you will require about 12 cubic yards of concrete (11.1 cubic yards net). After finishing the concrete, protect it from drying and freezing by covering with a tarpaulin or plastic sheet and if necessary with 4 to 6 inches of hay.