Redispersible polymer powder (RDP) bụ copolymer nke vinyl acetate na ethylene, nke a na-ejikarị dị ka ihe nkedo na ihe owuwu.Ọ na-eme ka ike, ịdịte aka na adhesion nke ngwaahịa simenti sitere na ịmepụta ihe nkiri kwụsiri ike n'oge ike.RDP bụ ntụ ntụ ọcha na-acha ọcha nke kwesịrị ịgbasa na mmiri tupu ejiri ya.Ngwongwo na viscosity nke RDP bụ ihe dị oke egwu ka ha na-emetụta àgwà nke ngwaahịa ikpeazụ.Edemede a na-akọwa arụmọrụ RDP na ụzọ nnwale viscosity nke nwere ike inyere ndị na-emepụta aka melite ogo ngwaahịa ma hụ na afọ ojuju ndị ahịa nwere.
Usoro ule arụmọrụ RDP
Emebere usoro ule arụmọrụ RDP iji nyochaa ike RDP iji melite arụmọrụ nke ngwaahịa sitere na ciment.Usoro nnwale bụ nke a:
1. Nkwadebe ihe
Kwadebe ihe ndị a: RDP, ciment Portland, ájá, mmiri na plasticizer.Gwakọta simenti Portland na ájá na nha 1: 3 iji nweta ngwakọta akọrọ.Kwadebe ngwọta site na ịgwakọta mmiri na plasticizer na nha 1: 1.
2. mix
Gwakọta RDP na mmiri na blender ruo mgbe enwetara slurry yiri ya.Tinye slurry na ngwakọta akọrọ na mix maka nkeji 2.Tinye ihe ngwọta plasticizer mmiri na mix maka nkeji 5 ọzọ.Ngwakọta nke ga-esi na ya pụta kwesịrị inwe nkwekọ siri ike, nke na-egbuke egbuke.
3. Tinye
Iji trowel, gbasaa ngwakọta na ọkpụrụkpụ nke 2mm n'elu ala dị ọcha, kpọrọ nkụ, dị larịị.Jiri rola mee ka elu ya dị nro ma wepụ ikuku ikuku.Ka ihe nlele ahụ gwọọ na ụlọ okpomọkụ maka ụbọchị 28.
4. Ntụle arụmọrụ
A tụlere ihe nlele ndị a gwọrọ maka ihe ndị a:
- Ike mkpakọ: A tụrụ ike mkpakọ site na iji igwe nnwale zuru ụwa ọnụ.Ike mkpakọ kwesịrị ịdị elu karịa akara njikwa na-enweghị RDP.
- Ike Flexural: A na-atụle ike mgbanwe site na iji ule na-ehulata isi atọ.Ike mgbanwe kwesịrị ịdị elu karịa akara njikwa na-enweghị RDP.
- Ike nrapado: A na-atụ ike nrapado site na iji nnwale ndọpụta.Ike nkekọ kwesịrị ịdị elu karịa akara njikwa na-enweghị RDP.
- Mgbochi mmiri: A na-emikpu ihe nlele ndị a gwọrọ n'ime mmiri maka awa 24 ma nyochaa ihe ndị ahụ ọzọ.Arụ ọrụ ya ekwesịghị imetụta nke ukwuu mgbe kọntaktị na mmiri gasịrị.
Usoro ule arụmọrụ RDP nwere ike ịnye data ebumnuche na ọnụọgụ maka ịdị irè nke RDP n'ịkwalite arụmọrụ nke ngwaahịa sitere na ciment.Ndị nrụpụta nwere ike itinye usoro a iji bulie usoro RDP wee hụ na ịdị mma ngwaahịa na-agbanwe agbanwe.
Usoro ule viscosity RDP
Emebere usoro ule viscosity RDP iji nyochaa omume eruba nke RDP na mmiri.Usoro nnwale bụ nke a:
1. Nkwadebe ihe
Kwadebe ihe ndị a: RDP, mmiri deionized, viscometer, na mmiri nhazi.Ogologo viscosity nke mmiri nzizi kwesịrị ịdị otu ka viscosity a tụrụ anya nke RDP.
2. Nleta viscosity
Jiri viscometer tụọ viscosity nke mmiri mmezi ma dekọọ uru ya.Hichaa viscometer ma jupụta na mmiri deionized.Tụlee viscosity nke mmiri ma dekọọ uru.Tinye ego RDP amara ama na mmiri wee kpalie nwayọ ruo mgbe enwetara ngwakọta otu.Ka ngwakọta ahụ nọdụ ala maka nkeji 5 iji kpochapụ ikuku ikuku.Jiri viscometer tụọ viscosity nke ngwakọta wee dekọọ uru ya.
3. Gbakọọ
Gbakọọ viscosity nke RDP na mmiri site na iji usoro a:
Viscosity RDP = (Mixture viscosity – Mmiri viscosity) / (Calibration Fluid viscosity – Mmiri viscosity) x Calibration Fluid viscosity
Usoro ule viscosity RDP na-enye ihe ngosi nke ka RDP si agbasa n'ime mmiri ngwa ngwa.Nke dị elu nke viscosity, na-esikwu ike na redispersibility, ebe ala nke viscosity, ngwa ngwa na ọzọ zuru ezu redispersibility.Ndị na-emepụta ihe nwere ike iji usoro a iji dozie nhazi nke RDP ma hụ na ọ dị mma redispersibility.
na ngwụcha
Ngwongwo RDP na ụzọ nnwale viscosity bụ ngwaọrụ dị mkpa maka ịlele ogo RDP na ịkwalite usoro ha.Site n'iji ụzọ ndị a, ndị na-emepụta ihe nwere ike hụ na ngwaahịa RDP ha na-arụ ọrụ achọrọ na nkọwa dị mfe iji, si otú ahụ na-abawanye afọ ojuju ndị ahịa na iguzosi ike n'ihe.A na-adụ ndị na-emepụta ihe ọdụ ka ha gbasoo usoro nyocha ahaziri ahazi ma jiri akụrụngwa elele anya iji hụ na nsonaazụ ziri ezi na ntụkwasị obi.Ka teknụzụ RDP na-aga n'ihu na-abawanye, a na-atụ anya ka a na-achọ ngwaahịa RDP dị elu na nke dị mfe iji mee ihe n'ọdịnihu.
Oge nzipu: Sep-04-2023