| 摘要 |
<p>A method of producing a hydraulic binder foam for the subsequent manufacture of a finished product, such as a foamed building board, is disclosed. An aqueous foam is prepared from water and a foaming agent comprising a hydrophilic polymer which is soluble, miscible or dispersible in water, preferably polyvinyl alcohol. The aqueous foam is mixed with a hydraulic binder in finely divided dry particle form, to produce the hydraulic binder foam. The hydraulic binder foam may then be formed into a desired shape and the hydraulic binder allowed to set to form the finished product.</p> |
