Page 158 - Handbook of Surface Improvement and Modification
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10.1 Methods and mechanisms of anti-cratering and leveling           153


                Phosphogypsum was utilized as a raw material for the preparation of self-leveling
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            mortar.  The properties of self-leveling mortar met the requirements of the existing stan-
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            dards.
                The  polymer-modified  self-leveling  mortars  were  developed  with  high  polymer-
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            cement  ratio  for  industrial  floor  finishing.   Superplasticizer  and  thickener  have  been
            included in the mixes to reduce bleeding, drying shrinkage, and to facilitate the workabil-
              15
            ity.  The self-leveling mortars using polyacrylic ester emulsion at a curing age of 28 days
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            were almost equal to the conventional flooring using urethane and epoxy resins.
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