one 20kg bag will cover an area of 1.1m2 to a depth of approximately 10mm. or 108 x 20kg bags equates to one cubic metre of
Yield: One 20kg bag will cover an area of 1.1m2 to a depth of approximately 10mm. Or 108 x 20kg bags equates to one cubic metre of mixed concrete.
One 20kg bag will yield a volume of approximately 0.011 cubic metres. Or 108 x 20kg bags to one cubic metre. BCSC Rapid Set No-Mix Concrete comes in 20kg plastic lined, multi-walled paper sacks. Clean all tools and equipment with water promptly after use.
One 60-lb bag of concrete gives you . 45 cubic feet of concrete when mixed with 2.5 quarts of water. In order to have enough concrete for one cubic foot, you'll require 2.2 bags of 60-lb concrete.
When mixing concrete simply mix 4 shovels of concrete blend with one shovel of cement. At this ratio you will require 12 bags (20kg each) of cement per cubic metre of concrete.
Thus the actual volume of concrete for 1 cubic meter of compacted concrete construction will be = 1 -0.02 = 0.98 m3. Thus, the quantity of cement required for 1 cubic meter of concrete = 0.98/0.1345 = 7.29 bags of cement.
1 Cubic Meter of Concrete
1m3 of concrete = 150l water + 250kg cement + 700kg sand + 1200kg aggregates.
Bags of Cement to Builders mix:
M15 = 4 Bags : 1m3 Builders mix.
It is cheaper to mix concrete by hand, but it will become less cost-effective as your project size increases.
Most standard mixers allow for a maximum of two 80# bags of concrete per batch for a total of 24 bags in an hour.
Each 20kg bag produces approximately 10 litres of Concrete. Note: Use approximately 2 x 20kg of Post Mix bags per post hole.
Measure enough water for the concrete job. As a guide, use around 2.5 litre of water for 20kg concrete bag.
There are approximately 20 barrow loads of concrete per m3. this is based on a standard one wheel barrow, loaded to 80% capacity.
Standard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks. To prepare the base, cut the ground level to the proper depth to allow for the slab thickness.
Fortunately, whether you plan to make a patio slab or a driveway, working in small areas divided by concrete forms and using bagged concrete mix can make the job easier for a DIYer.
For most small jobs around the home, bagged concrete mix is the most convenient and least expensive way to go. You can use it for fence post footings, deck footings and even small concrete pads. For jobs requiring more than about 30 bags, consider ordering “ready-mix” concrete from a truck instead.
Working With Ready-Mix Concrete
And, if you mix it yourself, it's the cheapest way to make your slab. For most do-it-yourselfers, the best material for building a concrete slab is a ready-mix, crack-resistant concrete product. The wet mix is poured into a prepared wood form, then left to cure.
Mixing Ratio
We generally recommend a 5 to 1 ratio with cement to produce good strong concrete. Cement is available by the bag and we stock 25kg or 40kg bags. You will need 6 x 40kg bags per cubic meter.
In terms of the ratio for concrete, it depends on what strength you are trying to achieve, but as a general guide a standard concrete mix would be 1 part cement to 2 parts sand to 4 parts aggregates. For foundations, a mix of 1 part cement to 3 parts sand to 6 parts aggregates can be used.
One 20kg bag of Concrete Mix requires approximately 2.5 litres of clean drinking water to provide a workable mix.
* 108 x 20kg bags of Boral Cement Concrete Mix will fill 1 cubic metre (m3).
Concreting can cost $50 to $150 per square metre, subjective on the levelling required, type of finish used and size of the job. You can expect to pay $200 to $300 per cubic metre.
For normal concrete, the weight of a cube of one cubic metre is between 2,000 and 2,600 kg.