reinforced concrete prise
It could be argued that cement is a traditional building material. It's first widespread use was by engineers of the Roman empire! A very good example being the cement dome of the Pantheon in Rome which was built in 126 AD.
1. fire resistant
2. durable and strong
3. maintenance free
4. easy installation
5. low material and installation cost
6. high compressive strength
7. custom design flexibility
disadvantages:1. low tensile strength
2. can crack due to shrinkage after drying
3. low thermal conductivity
You may consider concrete as a liquid stone. Easily used to fill any shaped mould. It sets to a hard and durable material, but is NOT strong in tension, and may be brittle.
In a little chemical detail, the CaO resulting from the dehydrating (actually calcining) of limestone, is reacted with CaSO4 and Diatomaceous earth (a natural form of very finely divided silica), and then used as a slurry to help bind an aggregate of sand and gravel.
This forms a complex series of calcium silicates and sulphates, and the longer these are allowed to remain moist, the stronger the concrete will be. The crystals may become larger and more interlocked. This slow drying is vital, and for high strength concrete, 28 days is not too much. [Bridges for example.]
Whilst concrete is poor in tension, if the concrete is bound with reinforcing steel, then the composite product will be also be strong in tension. Based as it is on calcium materials, concrete has poor acid resistance, even to such weak acids as the milk and the waste from cows.
concrete has benn more the 100yr araund us so why is ist so inportenete welll i do not knoe
it has only very litle tension resistance.
More likely reinforced concrete.
reinforced concrete prise
Reinforced concrete is just normal concrete with steel reinforement placed inside.
Steel reinforced concrete is concrete with rods of steel running through it.
no ductility
advantages of a frame structure: cheap strong disadvantages of a frame structure: expensive advantages of a shell structure: unique strong disadvantages of a shell structure: expensive
hybrid fibre reinforcement
it has only very litle tension resistance.
Reinforced Cement Concrete or ñRCCî is cement concrete that is reinforced with steel bars, plates or mesh to increase the weight capacity of the structure. The advantages of RCC construction are: the materials used are easily available, the structures are durable, and it is fire resistant and is pest safe. The disadvantages include: there is no scrap value, constant checking is required and skilled labor is needed it the construction of the structures.
More likely reinforced concrete.
reinforced concrete prise
Reinforced concrete is just normal concrete with steel reinforement placed inside.
Steel reinforced concrete is concrete with rods of steel running through it.
A. N. Talbot has written: 'Tests of reinforced concrete beams: resistance to web stresses' -- subject(s): Reinforced concrete 'Tests of concrete' -- subject(s): Concrete 'Tests of concrete and reinforced concrete columns' -- subject(s): Reinforced concrete, Concrete, Columns, Concrete, Concrete construction, Concrete Columns 'The railway transition spiral' -- subject(s): Railroads, Curves and turnouts 'Tests of cast-iron and reinforced concrete culvert pipe' -- subject(s): Pipe, Testing 'Reinforced concrete wall footings and column footings' -- subject(s): Reinforced concrete, Foundations 'Tests of columns' -- subject(s): Accessible book, Columns, Iron and steel, Iron and steel Columns, Reinforced concrete 'The strength of concrete' -- subject(s): Reinforced concrete 'Tests of timber beams' -- subject(s): Girders
Reinforced concrete has steel bars embedded in it. It is also called re-barred concrete.
George Concrete