1. Introduction
Para-rubber is the compound containing the large molecules. Chemically, it is categorized into the
polymer compound. Its special characteristic is highly flexible which can be called elastomer [1]; the
name of elastomer is often used interchangeably with the term rubber, and is preferred when referring to
values when adding the concentrated latex reaches at some amount. In the future, this indicates that the use of
concentrated latex at some suitable amount can develop the concrete having the properties of waterproof and thermal
insulation.