4. PLASTICIZERS &
Plasticizers are additives that soften
the materials (usually a plastic or a concrete
mix) they are added to. Although the same compounds
are often used for both plastics and concretes,
the desired effect is slightly different.
Polymer is a term used to describe
molecules consisting of structural units and a
large number of repeating units connected by covalent
chemical bonds. The term is derived from the Greek
words: polys meaning many, and meros meaning pars.
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