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unslaked lime

unslaked lime

9.9
A white, very strong chemical used to make mortar and cement
  • noun
  • /ʌnˈsleɪkd laɪm/
  • Specialized
translation icon : cal viva
  • To prepare mortar, architects often mix unslaked lime with sand and water.

Examples

  • The workers handled the unslaked lime with care, wearing protective gloves and goggles.

  • The construction workers used unslaked lime for the mortar.

  • Unslaked lime reacts violently with water, producing heat and forming slaked lime.

  • Are you familiar with unslaked lime?

  • Unslaked lime reacts violently with water, producing slaked lime and releasing heat.

  • The workers handled the unslaked lime carefully, using gloves and goggles for safety.

  • To make strong mortar, builders often combine unslaked lime with water and sand.

Synonyms

lime
vsunslaked lime
  • Specialized
14 4.4

A white powder used in building and farming to make soil less acidic

is narrower, focusing on use in mortar and cement rather than the broader category
quicklime
vsunslaked lime
  • Specialized
2 8.3

A white chemical made by heating a type of rock that burns skin and heats up in water

is used especially in mortar and cement rather than only for general industrial production
burnt lime
vsunslaked lime
  • Specialized
7.4

A white powder made by heating limestone that reacts with water

is focused on use in mortar and cement rather than naming the production method
calcined lime
vsunslaked lime
  • Specialized
8.1

A white powder made by heating limestone that is used to make lime and in industry

highlights its role in mortar and cement rather than the calcining process
calcium oxide
vsunslaked lime
  • Specialized
5.3

A white solid chemical used in building and industry that makes lime when water is added and gets hot

emphasizes use in building materials like mortar and cement rather than broad chemistry
caustic lime
vsunslaked lime
  • Specialized
6.6

A white powder made by heating limestone, used in building and farming

is concentrated on use in mortar and cement rather than agricultural applications
fluxing lime
vsunslaked lime
  • Specialized
9.9

A white powder used to help melt and clean metals and to make slaked lime

covers general use in mortar and cement rather than this specific fluxing purpose
calx
vsunslaked lime
  • Archaic
9.9

A white powder like chalk made from calcium used in chemical processes

is the practical term for use in mortar and cement rather than the archaic label

Surface Forms

unslaked lime singular

Morphology

unslaked + lime

The noun phrase is fully compositional: 'unslaked' means not mixed with water (not slaked) and 'lime' refers to quicklime/calcium oxide, so together they denote lime that has not been slaked (i.e., calcium oxide). This adjective + noun combination follows ordinary English composition and is predictable for a learner who knows both constituents.

Etymology

Unslaked lime is dry lime that has not been slaked, which means 'mixed with water'. When water touches it, it heats up and can burn, so the name explains why it is dangerous and must be handled carefully in building work.