Polyester-modified mortars

Similar systems have also been examined by Dikeou, Steinberg, et al.,122] Sarny Abdel Monem El-Garf,(2 l Birkimer and Lindeman,(251 and Ye and Wu.(2 l Figure 7.9 represents the effects of curing conditions on the strength development of polyester-modified mortars. 

Figure 7.9 Effects of curing conditions on strength development of polyester-modified mortars. ( 1990, JtUernationalAcademic Publishers, reprinted with permission.)...

This process can achieve a recovery of scrap foam into a polyol mixture, which can be used to produce polyurethane without the need for purification. This method requires low capital investment and is simple enough to cope with variations in the mix scrap foam. The resulting recycled polyol can be incorporated with polyisocyanate to produce recycled polyurethane which can be used to modify recycled polyester mortar made with either virgin or recycled resins. 

Typical Properties of Recycled P Polyurethane Modified Recycled cycled Polyester Mortar... 

Areas less than 10 mm thick can be hand repaired by applying proprietary cementitious mortar with or without polymer modifier. Polymeric mortars can provide physical protection to concrete but do not provide an alkaline environment. The substrate must be kept sufficiently wet to minimize the loss of water during repairing. Proprietary bonding coats may be added to provide strong bonding to the substrate. They are formulated from epoxy polymer or polyester polymer and they can be used without a primer. 

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