Master the Basics of Concrete

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Questions and Answers

Which material consists of cement, sand, and water?

  • Reinforced concrete
  • Concrete
  • Grout
  • Mortar (correct)

Which materials are used to make concrete?

  • Water, cement, and gravel
  • Water and sand
  • Water, cement, sand and gravel (correct)
  • Water and cement

What is the purpose of reinforcement in reinforced concrete?

  • To decrease the tensile strength of concrete
  • To increase the tensile strength of concrete (correct)
  • To decrease the compressive strength of concrete
  • To increase the compressive strength of concrete

What are aggregates in construction?

<p>Coarse particulate material used in construction (A)</p> Signup and view all the answers

What is the difference between fine aggregate and coarse aggregate?

<p>Fine aggregate passes through #4 sieve, while coarse aggregate does not (D)</p> Signup and view all the answers

What are rebars commonly made of?

<p>Steel bars (D)</p> Signup and view all the answers

What is the usual name for carbon steel bars used in construction?

<p>Rebars (C)</p> Signup and view all the answers

What is the primary purpose of rebars in construction?

<p>To increase strength (A)</p> Signup and view all the answers

Flashcards

What is Mortar?

A bonding agent made of cement, sand, and water, used to hold bricks or stones together.

What makes Concrete?

Water, cement, sand, and gravel combined create this strong construction material.

Purpose of Reinforcement?

Increases tensile strength by bearing tensile forces that concrete cannot withstand.

What are Aggregates?

Granular material, such as sand, gravel, crushed stone, or recycled concrete, that is used in construction.

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Fine vs. Coarse Aggregate?

Fine aggregate passes through No. 4 sieve; coarse aggregate does not.

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What are Rebars?

Steel bars embedded in concrete to provide tensile strength.

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What are Rebars?

Steel bars used in reinforced concrete to provide tensile strength.

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Rebar's Primary Purpose?

Rebars provide tensile strength to composite materials.

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Study Notes

Concrete Composition

  • Concrete is a material that consists of cement, sand, and water.

Concrete Materials

  • The materials used to make concrete are cement, sand, and water.

Reinforced Concrete

  • The purpose of reinforcement in reinforced concrete is to add strength and durability.

Aggregates

  • Aggregates in construction are inert materials that are mixed with cement to form concrete.
  • Aggregates can be classified into two types: fine aggregate and coarse aggregate.

Aggregate Types

  • Fine aggregate is a type of aggregate that is smaller in size, typically consisting of sand or crushed stone.
  • Coarse aggregate is a type of aggregate that is larger in size, typically consisting of gravel or crushed rock.

Rebars

  • Rebars are commonly made of carbon steel.
  • Carbon steel bars used in construction are usually referred to as "mild steel bars".
  • The primary purpose of rebars in construction is to provide additional strength and support to concrete structures.

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