concrete

Examples of concrete in the following topics:

• Reinforced Concrete Construction

  • Reinforced concrete is a composite material in which the low tensile strength of concrete is reinforced with a material such as steel.
  • The reinforcement in the case of concrete is usually, though not always, steel reinforcing bars known as rebar, and is usually embedded passively in the concrete before the concrete sets.
  • Durability in the concrete environment, irrespective of corrosion or sustained stress
  • If a material with high strength in tension, such as steel, is placed within the concrete, the composite material (reinforced concrete) resists not only compression, but also bending and other direct tensile actions.
  • When rebar corrodes, the rust expands and tends to flake, cracking the concrete and unbonding the rebar from the concrete.

• Variations in Abstraction

  • Abstract descriptions are in contrast to concrete descriptions.
  • Concrete descriptions cut through any vagueness or amorphous interpretation of an idea.
  • At the bottom of the ladder is concrete thinking.
  • Children tend to start asking concrete questions about the world around them at the age of eight or nine.
  • Talented speakers will start at the bottom of the ladder and present a concrete concept to the audience.

• Roman Architecture under the Republic

  • Concrete was a cheaper and lighter material than most stones used for construction.
  • The Romans effectively combined concrete and the structural shape of the arch.
  • The arch and concrete are found in many iconic Roman structures.
  • The ruins show the internal core of the building, made in roman concrete.
  • Explain the importance of both concrete and the arch in Roman architecture.

• Learning Objectives

  • Each Boundless concept supports and is framed by its learning objective: the concrete expectation a student should be able to fulfill after reading.
  • The learning objective is the backbone of this structure: as a concrete statement of the expectation a student should be able to fulfill after studying the module, it gives the text a purpose and the assessment items something well-defined to assess.
  • All Boundless learning objectives begin with a verb describing a concrete action, like "explain," "list," or "calculate."

• Recycling and industrial waste

  • Coal waste (ash, boiler slag, fly ash, flue deposits and desulphurised material) can improve the strength and durability of concrete and manufactured wallboard.
  • Material from construction and demolition sites (including shingles, scrap wood and drywall) can be recycled into asphalt paving, remilled lumber, wallboard and concrete.

• Steel-Frame Construction

  • Wide sheets of steel deck can be used to cover the top of the steel frame as a 'form' or corrugated mold, below a thick layer of concrete and steel reinforcing bars.
  • Another popular alternative is a floor of precast concrete flooring units with some form of concrete topping .
  • Steel columns can be protected by encasing them in some form of fire resistant structure such as masonry, concrete or plasterboard, or spraying them with a coating to insulate them from the heat of the fire.
  • Bricks, stone, reinforced concrete, architectural glass, sheet metal and simply paint have been used to cover the frame, and protect the steel from the weather.

• Rome

  • The Roman use of the arch, and their improvements in the use of concrete and bricks, facilitated the building of many aqueducts throughout the empire .
  • For instance, tile-covered concrete quickly supplanted marble as the primary building material.
  • The freedom of concrete also inspired the colonnade screen, a row of purely decorative columns in front of a load-bearing wall.
  • Ancient Roman concrete was a mixture of lime mortar, sand with stone rubble, pozzolana, water, and stones.
  • Concrete construction proved to be more flexible and less costly than buildings constructed out of solid stone.

• Tailor Abstraction to Your Audience

  • Almost anything can be described either in relatively abstract, general words or in relatively concrete, specific ones.
  • You can increase the clarity, and therefore the usability, of your speaking by using concrete, specific words rather than abstract, general ones.
  • Concrete words help your audience understand precisely what you mean.
  • When you want the audience to make a concrete connection to their direct experience, remember to come down to earth on the the abstraction ladder.
  • Use concrete terminology and abstract terminology when it is appropriate for your audience

• Basic Load-Bearing Construction

  • The materials most often used to construct bearing walls in large buildings are concrete, block, or brick.
  • The sills are bolted to the masonry or concrete foundation.
  • When on concrete, the sill plate is anchored, usually with embedded bolts in the concrete substrate of the foundation wall.

• Defining Thoughts

  • Concrete Operational Stage.
  • Internal representations are gradually organized into logical structures, which first operate on the concrete properties of the environment, in the stage of concrete operations.
  • Then, in the stage of formal operations, these logical structures operate on abstract principles that organize concrete properties.