COMPARISON OF LIQUID DISPERSIONS WITH SPRAY-DRIED ACRYLIC POLYMERS AS MODIFIERS OF A CEMENT-BASED PATCHING MATERIAL

Research was conducted to compare the performance of dry polymers to the more traditional liquid-based polymers in a general purpose patching mortar. A series of polymer-modified mortars were thus assessed, comparing two spray-dried redispersible acrylic powders with two water-based polymers: an acrylic dispersion and a styrene-butadiene rubber dispersion. Findings revealed that the use of the redispersible powders resulted in mortars with excellent adhesion and strength properties comparable to the liquid product. The mortars modified with these dry polymers also displayed slightly higher shrinkage than the dispersions. However, combined with their advantages over liquid product, such as ease of shipping and handling, the dry polymers are very appropriate for use in the formulation of high-performance patching materials.

Language

  • English

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Filing Info

  • Accession Number: 00716459
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 16 1996 12:00AM