1. Cov huab cua permeability tsis zoo
Resin-based dag pob zeb yuav luag tsis muaj huab cua permeability, thiab yog tias muaj dej noo nyob hauv qab, nws yogchaw txua txiag zeb zeb cutternyuaj rau volatilize.
2, nquag alkaline corrosion
Cov pob zeb siv hauv cov pob zeb ua pob zeb yog cov khoom siv tsis zoo polyester resin, thiab cov hydrolysis ntawm unsaturated polyester resin nyob rau hauv alkaline tej yam kev mob yog irreversible. Yooj yim muab tso, cov tshuaj alkaline tuaj yeem yaj cov pob zeb ua pob zeb thiab tsis tuaj yeem rov qab los. Cov cement siv rau paving pob zeb pob zeb yog alkaline, thiab nws yog ib qho yooj yim rau hydrolyze cov resin-based dag pob zeb ib zaug nws.multi saw hniav txiav tshuabrov qab mus rau noo noo thiab absorbs dej.
3. Loj expansion coefficient
Muaj ib lo lus hu ua "thermal expansion and cold contraction", uas yog hais txog cov khoom ntawm ib yam khoom uas expands thaum rhuab thiab cog lus thaum txias. Lub expansion coefficient yog ib lub cev kom muaj nuj nqis uas characterizes lub thermal expansion zog ntawm ib yam khoom, uas yog, lub cev muaj nuj nqis uas characterizes qhov nce nyob rau hauv ntev, cheeb tsam, thiab ntim ntawm ib yam khoom thaum nws yog rhuab. Thaum paving pob zeb, ib qho dav ntawm qhov sib txawv yuav raug tshwj tseg ntawm ib qhontug sib tsoo tshuabdeb kom tawm ntawm cov npoo rau kev nthuav dav thiab kev cog lus ntawm lub pob zeb, kom tsis txhob deformation, bulging thiab tawg ntawm pob zeb vim extrusion. Lub expansion coefficient ntawm resin-based dag pob zeb yog ntau dua li cov pob zeb ntuj, yog li qhov sib txawv yuav tsum dav dua li ntawm cov pob zeb ntuj. Yog hais tias tustshuab bevelQhov sib txawv yog nqaim heev, cov pob zeb ua pob zeb ua pob zeb yuav sib sib zog nqus thaum nws sov thiab nthuav dav, ua rau deformation, bulging thiab tawg. Tab sis nyob rau hauv cov txheej txheem no, nws yog ib qho yooj yim los tsim ib kab. Ntawd yog: thaum cov pob zeb ua pob zeb ua pob zeb yog pob zeb, qhov sib txawv ntawm qhov txaustshuab nplaim tawsdav yog sab laug, tab sis qhov sib txawv yog ntim nrog marble kua nplaum.
