From Polymers in Cementitious Materials
4.9 Common Polymer Modified Construction Materials
Polymers have been used as cement additives for modification of a variety of cementitious materials on a regular basis since the 1950s [1, 44]. With regard to mortars and renders, polymers (powder or dispersion) were primarily incorporated to alleviate the main problems noted with non-modified materials such as durability, workability and flexibility [28, 45]. However, it was important that the polymer utilised was not adversely affected by the alkaline nature of the cementitious environment [9, 10]. Equally the polymer should not influence the alkalinity of cement [45]. A few examples of the types of polymers used as cement additives in various construction materials is listed in Table 4.2.
| Chemical composition of polymer | Material description |
|---|---|
| Acrylic | Self-smoothing floor screeds, repair mortars, primers, sealing compounds |
| SA | Self-smoothing floor screeds, primers, ceramic tile adhesives, sealing compounds |
| SBR | Repair mortars, primers, ceramic tile adhesives, grouts, adhesives |
| VAE | Plaster, repair mortars, self-smoothing floor screeds, ceramic tile adhesives, tile grouts |
| Chloroprene | Primers |
| VeoVa | Ceramic tile adhesives, tile grouts, joining compounds |
| Vinylidene chloride | Repair mortars |
4.9.1 Bridge Decking
Polymer modified Portland cement concrete is suitable for use as a bridge decking overlay or as a general concrete repair mortar [4, 30, 45, 65]. By incorporating SBR, polyvinyl chloride (PVC) and polyvinylidene dichloride into...
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References 1. J.D.N. Shaw, P.J. Brown, R. Cather, R. Dennis, P.C. Hewlett, R.A. Johnston, M. Levitt, J.B. Newman, J. Raymond, B.W. Staynes, R.N. Swamy, L.J. Tabor and M.J. Walker, Polymers In...
4.1 Introduction From the mid to late 20th century, the manufacture and subsequent uses of polymers within the construction industry has grown substantially [1, 2]. Actual interest in using polymers...
4.2 Brief Summary of the Advantages of Incorporating Polymer into Cementitious Materials An increase in the flexural and tensile strength of the resultant cementitious system has been noted when a...
4.5 Redispersible Polymer Powders 4.5.1 Introduction As well as emulsions, latexes are also available in a solid form termed redispersible polymer powders [1, 8, 9, 14-16, 29, 32]. The...
Concrete and cements consist of a mixture of a binder or clinker and a coarser aggregate. They are used to patch or line floors and walls, bond brick, and join components for use in high temperature...
