Dimensional stability (deformation) of concrete

0.0(0)
Studied by 0 people
call kaiCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/10

encourage image

There's no tags or description

Looks like no tags are added yet.

Last updated 4:47 PM on 4/29/26
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai

No analytics yet

Send a link to your students to track their progress

11 Terms

1
New cards

What are deformations in concrete caused by?

  • external loadings

  • environment (temperature/humidity)

2
New cards

What are concrete deformations group by?

  • time

  • stress

3
New cards

What is a short term deformation?

  • immediate elastic response of concrete to an application of removal of load

4
New cards

What is a long term deformation?

  • due to a combination of environmental effects and applied loading

5
New cards

What type of deformations are independent of time?

Deformations involving elastic strain due to load

6
New cards

What four deformations are time dependent?

  • shrinkage

  • moisture movement

  • thermal expansion

  • creep

7
New cards

What 3 deformations are independent of stress?

  • shrinkage

  • moisture movement

  • thermal expansions

8
New cards

What 2 deformations are stress dependent?

  • elastic strain

  • creep

9
New cards

What three stages can the concrete stress and strain behaviour be divided into?

  • concrete stress and strain behaviour is non-linear

  1. elastic (up to 30% of ultimate compressive stress)

  2. bond crackling (30-75%)

  3. matric cracking (above 75%)

<ul><li><p>concrete stress and strain behaviour is non-linear</p></li></ul><p></p><ol><li><p>elastic (up to 30% of ultimate compressive stress)</p></li><li><p>bond crackling (30-75%)</p></li><li><p>matric cracking (above 75%)</p></li></ol><p></p><p></p>
10
New cards

What is the modulus of elasticity? (E)

the slope of the stress/strain graph

  • Youngs Modulus

  • measure resistance of concrete from being deformed

11
New cards

What other modulus values can be found on the stress strain curve?

  • tangent modulus (tangent at any point given)

  • initial tangent modulus (gradient of the initial slope) - used for very low stresses, limited use

  • secant modulus (the line drawn from the origin to any point given) - used most commonly

<ul><li><p>tangent modulus (tangent at any point given)</p></li><li><p>initial tangent modulus (gradient of the initial slope) - used for very low stresses, limited use</p></li><li><p>secant modulus (the line drawn from the origin to any point given) - used most commonly </p></li></ul><p></p>