The document discusses 5 common construction materials - wood, iron, gravel, cement, and plastics. For each material, it provides a picture, describes the material's role in construction, and lists its advantages and disadvantages. Wood provides structure but is sensitive to humidity. Iron forms skeletons and reinforcing but requires maintenance and fireproofing. Gravel provides a concrete framework but can weaken structures in excess. Cement acts as a binder and is fire resistant but has low tensile strength. Plastics are used for windows and pipes but are fragile and combustible.
The document discusses 5 common construction materials - wood, iron, gravel, cement, and plastics. For each material, it provides a picture, describes the material's role in construction, and lists its advantages and disadvantages. Wood provides structure but is sensitive to humidity. Iron forms skeletons and reinforcing but requires maintenance and fireproofing. Gravel provides a concrete framework but can weaken structures in excess. Cement acts as a binder and is fire resistant but has low tensile strength. Plastics are used for windows and pipes but are fragile and combustible.
The document discusses 5 common construction materials - wood, iron, gravel, cement, and plastics. For each material, it provides a picture, describes the material's role in construction, and lists its advantages and disadvantages. Wood provides structure but is sensitive to humidity. Iron forms skeletons and reinforcing but requires maintenance and fireproofing. Gravel provides a concrete framework but can weaken structures in excess. Cement acts as a binder and is fire resistant but has low tensile strength. Plastics are used for windows and pipes but are fragile and combustible.
The document discusses 5 common construction materials - wood, iron, gravel, cement, and plastics. For each material, it provides a picture, describes the material's role in construction, and lists its advantages and disadvantages. Wood provides structure but is sensitive to humidity. Iron forms skeletons and reinforcing but requires maintenance and fireproofing. Gravel provides a concrete framework but can weaken structures in excess. Cement acts as a binder and is fire resistant but has low tensile strength. Plastics are used for windows and pipes but are fragile and combustible.
Picture of each Role/fonction of each Advantages Disadvantages
RESOLUTION
1. THE WOOD
ROLE: the wood make it possible to make envelope of the building : boards, walls, roof of opening.
ADVATANGES : its advantage is due to its durability, but also it is favorable to the construction of buildings since, it is light and elastic, which offers better resistance to ground mouvements and therefore to the ffects of time. Will maintained wooden building can serve for decades or even centuries.
DISADVANTAGES : wood has poor thermal inertia, which ensures that the accumulated heat is quickly diffused. Sensitive to humidity, it must be treated so as not to deteriorate. 2. THE IRON
ROLE : iron is an essential element used to form : the skeleton of buildings, reinforcing concrete, reinforcing foundations. It is used for piping, it covers facades.
ADVATANGES : the metallic structures make it possible to have the lowest possible permanent load and an elastic behavior, even in the cose of plastification of certain zones. In the cose of buildings, these characteristics are particularly interesting for structures in areas of marked seismicity.
DISADVANTAGES : iron is a more expensive material compared to its competitors. Obviously,
the presence of a professional is always required. Ore of its other disadvantages is that it is difficult to maintain. Moreover, to prevent the appearance of rust, it will have to be greased, fainted and polished, but also it has another disadavntage in terms of its metal frame ; this has little fire resistance, therefore, insofar as the structure is deformed by high temperatures. It therefore requires a fireproofing treatment.
3. THE GRAVEL ROLE : its role is to constitue the skeleton and the framework of the concrete.
ADVANTANGES: its advantage is at the level of the blow compared to the expense during the works ; it is thanks to this that concrete is an economical material because we had put a maximum to fill the void during the mixing with the cement. DISADVANTAGES : the gravel can be risky in the event of an overdose of the material, indead the overdose of the material during the mixing of the concrete for easily weaken the structure.
4. THE CEMENT
ROLE : the cement acts as a hydraulic binder (which hardens under the action of water) ; it is also used in the preparation of concrete.
ADVANTAGES : cement is knoun to be very fire resistant compared to other building
materials ; but it also saves heating and therefore energy consumption.
DISADVANTAGES : cement material has low tensile strength and should only be used for this ; it also has a low resistance to deformation during manufacture, but also it is easy to crack and may be broken.
5. PLASTICS ROLE : plastic materials contribute to the improvement of our constructions, the are ideal for window froms and water pipes.
ADVANTAGES : plastic materials are light and malleable. They are perfectly waterproof ; they resist corrosion and wear ; they do not rot and do not conduct electricity.
DISADVANTAGES : plastic materials are even materials that are too fragile in the face of fire ; once in contact with fire, the material can easily collapse and disappear in the smoke.
