Properties of Polymer-Modified Mortars Using Powdered Emulsions


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Title: Properties of Polymer-Modified Mortars Using Powdered Emulsions

Author(s): Y. Ohama and K. Shiroishida

Publication: Special Publication

Volume: 89


Appears on pages(s): 313-322

Keywords: adhesion; admixtures; compressive strength; drying shrinkage; emulsifying agents; flexural strength; mortars (material); permeability; plastics, polymers, and resins; polyethylene; polyvinyl acetate.

Date: 12/1/1985

Recently powdered emulsions of improved quality have, been developed and commercialized as cement modifiers. Mixed in a powder form with cement mortars, they are re-emulsified and modify the mortars. The purpose of this study is to evaluate the quality of the commercial powdered emulsions for cement modifiers. Polymer-modified mortars using powdered emulsions were prepared with variation in polymer-cement ratio, and tested for strength, adhesion, waterproofness, length change and water resistance. Their properties were also compared with those of ordinary polymer-modified mortar using styrene-butadiene rubber latex. It is concluded from the test results that the powdered emulsion- modified mortars can be used in the same manner as ordinary polymer-modified mortar in practical applications, in consideration of their drying shrinkage.