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retarder

retarder

7.6
Something that slows a movement or a process
  • noun
  • /rɪˈtɑrdər/
  • Specialized
translation icon : retardador
  • This confirms the desired thermal curing condition within the large concrete block generated by the heat of hydration of the UHPC cementitious binder (in the presence of a set retarder).
  • a vapor retarder
  • a set retarder

Examples

  • Set retarders, which are commonly used for hot weather concrete construction, can help extend the period over which a desired slump is retained.

    Academic text (2017)
  • Based on these results, a dosage of 4.6 kg/m3 (0.29 lb/ft3) of the set retarder was selected for use in the UHPC mixture developed in the study.

    Academic text (2017)
  • Manual addition of steel fiber and set retarder followed by thorough mixing and final checking of the fresh mixture prior to delivery.

    Academic text (2017)
  • Another set retarder from the same manufacturer that supplies the HRWRA used in the study was evaluated.

    Academic text (2017)
  • A high-range water reducer (HRWR) was used, and a set retarder was also obtained from the same manufacturer.

    Academic text (2017)
  • The compressive strength of the UHPC with 9.2 kg/m³ of retarder, however, experienced a significant (approximately 30%) drop.

    Academic text (2017)
  • With set retarder, initiation of temperature rise was significantly delayed (it started approximately 24 hours after casting), and a peak temperature of 77°C (171°F) was reached after approximately 35 hours.

    Academic text (2017)
  • To extend the drying time of the paint, the artist added a few drops of retarder to the mixture.

  • In construction, workers use a vapor retarder to prevent moisture from entering the building materials.

  • When applying adhesives, using a drying retarder can help in achieving a better bond.

Synonyms

retardant
vsretarder
  • Specialized
20 6.8

A material that slows or stops burning and other unwanted reactions

is any slowing agent including people and devices, not only chemicals
decelerator
vsretarder
7.0

A person or thing that makes a process slow down

is an agent like a person, device, or substance rather than an abstract factor
retarding force
vsretarder
  • Specialized
7.7

A force that pushes against a moving object, like air or water, to slow it down

is a general slowing agent and also covers people or devices, not just forces

Antonyms

accelerator
  • Specialized
2 5.5

A substance that makes a chemical reaction go faster without being changed

How Effective

brake
413 1.6
retarder
  • Specialized
7.6
hindrance
21 5.7

Surface Forms

retarder singular
retarders plural

Morphology

retarder = retard (transparent) = retard + er

Formed by the verb 'retard' + agent/instrument suffix '-er', so the meaning 'one or thing that slows' is directly derived and clear.

Etymology

Retarder comes from Latin parts re- 'back' and tard- 'slow', the same root you see in tardy. So a retarder is something that makes a movement or process slower or delays it.