1.1 This specification covers two types of plastic cement for use in portland cement-based plasters for exterior (stucco) and interior application.1.2 The values stated in SI units are to be regarded as the standard. Values in SI units shall be This specification covers plastic cements for use in Portland cement-based plasters for exterior (stucco) and interior applications. All the materials should be tested and conform to the required values of fineness, autoclave expansion, time of setting