{"id":3032,"date":"2020-12-17T09:54:27","date_gmt":"2020-12-17T08:54:27","guid":{"rendered":"http:\/\/www.e-rihs.it\/?page_id=3032"},"modified":"2024-05-07T11:20:03","modified_gmt":"2024-05-07T10:20:03","slug":"contact-sponge-method-2","status":"publish","type":"page","link":"https:\/\/www.e-rihs.it\/en\/contact-sponge-method-2\/","title":{"rendered":"Contact Sponge Method"},"content":{"rendered":"

[et_pb_section fb_built=”1″ _builder_version=”4.7.7″ _module_preset=”default”][et_pb_row column_structure=”2_5,3_5″ _builder_version=”4.7.7″ _module_preset=”default” hover_enabled=”0″ sticky_enabled=”0″][et_pb_column type=”2_5″ _builder_version=”4.7.7″ _module_preset=”default”][et_pb_image src=”http:\/\/www.e-rihs.it\/wp-content\/uploads\/2022\/03\/contact-sponge.jpg” title_text=”contact sponge” _builder_version=”4.7.7″ _module_preset=”default”][\/et_pb_image][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.7.7″ _module_preset=”default”][et_pb_text _builder_version=”4.7.7″ _module_preset=”default”]<\/p>\n

LABORATORIO: CNR ISPC<\/strong><\/p>\n

 <\/p>\n

NOME STRUMENTO<\/strong><\/p>\n

Spugna di contatto<\/p>\n

 <\/p>\n

INFORMAZIONI GENERALI<\/strong><\/p>\n

Il metodo della spugna di contatto, o della spugnetta, \u00e8 un test di assorbimento di acqua da parte del materiale in esame che pu\u00f2 essere effettuato anche in situ.<\/p>\n

Una spugna di tipo e dimensioni prestabilite viene caricata con una quantit\u00e0 d\u2019acqua tale che, tenuta a contatto della superficie con pressione costante e per tempi brevi, non dia luogo a fenomeni di sgocciolamento. Per l\u2019applicazione sulla superficie viene utilizzata una piastra circolare in plastica. La quantit\u00e0 di acqua assorbita dalla superficie viene calcolata per differenza, pesando la spugnetta prima e dopo l\u2019applicazione, con una precisione che dipende da quella della bilancia utilizzata.<\/p>\n

 <\/p>\n

DETTAGLI TECNICI<\/strong><\/p>\n

Strumentazione:<\/em><\/p>\n

Kit per misura del test: spugne tipo Spontex1 tipo Calypso composte da fibre naturali, opportunamente tagliate mediante fustella di diametro 55 mm (superficie 23,76 cm2), piastre circolari di plastica 1034 Rodac Plate prodotte dalla ditta statunitense Falcon, bilancia portatile (Sede di Firenze, Sezione di Milano).<\/p>\n

 <\/p>\n

Applicazioni: <\/em><\/p>\n

Il metodo della spugnetta, a differenza di altri metodi di misura dell\u2019assorbimento di acqua, \u00e8 facilmente applicabile in situ. Le misure di assorbimento di acqua sono molto utilizzate e di importanza fondamentale per valutare lo stato di conservazione di una superficie e l\u2019efficacia e durabilit\u00e0 di trattamenti conservativi, in particolare di tipo protettivo.<\/p>\n

 <\/p>\n

Referente:
Silvia Rescic silvia.rescic@cnr.it<\/a><\/p>\n

 <\/p>\n

Scarica la scheda completa<\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

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