Abstract:Sustantzia asko erabili dira betuna eraldatzeko haien propietateak eta errendimendua hobetzeko helburuarekin, baina gehien erabiltzen direnak polimeroak dira. Poliuretano-aparra isolatze termikotik sortzen den hondakin-produktu bat da, normalean zabortegietan amaitzen dena. Hondakin poliuretano-aparra betun eraldatzaile gisa aukeratu zen betunak eraldatzeko bi nahaste bituminoso ezberdinak ekoizteko: beroan egindako nahastea B 50/70 motako betunarekin eta mastika bituminosoa B 35/50 motako betunarekin. Polimer… Show more
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