Proportioning

• (p. pr. & vb. n.) of Proportion
Found on http://thinkexist.com/dictionary/meaning/proportioning/

Proportioning

Selection of proportions of ingredients for mortar or concrete to make the most economical use of available materials to produce mortar or concrete of the required properties.
Found on https://www.encyclo.co.uk/local/21122

Proportioning

Selection of proportions of material for concrete to make the most economical use of available materials to manufacture concrete of the required strength, placeability, and durability,
Found on http://www.moxie-intl.com/glossary.htm
No exact match found