I-Redispersible Polymer Powders (RDP) iye yanda kakhulu kwishishini lokwakha, ngakumbi kwimixube yekhonkrithi yesibophelelo sodaka. Ukudityaniswa kwabo kuzisa intaphane yeenzuzo eziphucula ukusebenza kunye nokuqina kwekhonkrithi.
Iipropati zeMichiza yeRDP
Ii-RDPs zenziwe ngokutshiza-yomisa i-emulsions ye-polymer, okubangela ukuba ibe ngumgubo ococekileyo onokuthi usasazwe ngokulula emanzini. Iipolymers ezisetyenziswa ngokuqhelekileyo ziquka i-vinyl acetate-ethylene (VAE), i-vinyl acetate copolymers, kunye ne-acrylic copolymers. Ezi polima zikhethelwe iipropathi zazo zokuncamathelisa, ukuguquguquka, kunye nobuchule bokuphucula iimpawu ezahlukeneyo zomzimba zodaka kunye nekhonkrithi.
Emva kokuxubana namanzi, ii-RDPs zibuyela kwimeko yazo yepolymer yokuqala, zenza ifilimu yepolymer ngaphakathi kwekhonkrithi yekhonkrithi. Le filimu inika iipropati ezininzi eziluncedo, ezifana nokuphucula ukubambelela, ukuguquguquka, kunye nokuchasana nezinto ezisingqongileyo. Ukwakhiwa kweekhemikhali ze-RDPs kubavumela ukuba basebenzisane ngokufanelekileyo kunye nemathiriyeli ye-cementitious, ukuphucula zombini iindawo ezintsha kunye nezilukhuni zodaka kunye nekhonkrithi.
Izibonelelo ze-RDP kwi-Mortar Binder Mixtures yeConcrete
Ukuphuculwa kokuSebenza:
Ii-RDPs zomeleza ukusebenza kodaka kunye nekhonkrithi. Iinqununu ze-polymer zinciphisa ukungqubuzana kwangaphakathi phakathi kwee-aggregates kunye ne-binder, okwenza umxube ube lula ukuxuba, ukuthutha kunye nokusebenzisa. Oku kuluncedo ngokukhethekileyo kwiiprojekthi zokwakha ezintsonkothileyo okanye ezintsonkothileyo apho kulula ukufaka isicelo.
Ukunamathela okomeleziweyo:
Olunye uncedo oluphambili lwe-RDP kukukwazi kwayo ukuphucula ngokubonakalayo ukuncamatheliswa kodaka kwiisubstrates ezahlukeneyo. Oku kubaluleke ngakumbi kwizicelo ezifana nokunamathelisa iithayile, iintsimbi zokulungisa, kunye neenkqubo zangaphandle zokugquma i-thermal. Ifilimu ye-polymer eyenziwe yi-RDP yandisa indawo yoqhagamshelwano kunye namandla okudibanisa phakathi kodaka kunye ne-substrate.
Ukonyuka koGuquko kunye nokuChasa uTshintsho:
Imixube yekhonkrithi kunye nodaka equlethe i-RDP ibonisa ukuguquguquka okuphuculweyo kunye nokumelana nokuguqulwa. Ifilimu ye-polymer ngaphakathi kwe-matrix yekhonkrithi inika iqondo lokuguquguquka elinceda izinto eziphathekayo ukumelana noxinzelelo kunye noxinzelelo ngaphandle kokuqhekeka. Oku kubaluleke ngakumbi kwiindawo eziphantsi kokwandiswa kobushushu, ukusebenza kwenyikima, okanye ukungcangcazela koomatshini.
Ukumelana naManzi kunye noKuhlala ixesha elide:
Ukubandakanywa kwe-RDP kwandisa ukuxhathisa kwamanzi kudaka kunye nekhonkrithi. Ifilimu ye-polymer isebenza njengomqobo, ukunciphisa ukungena kwamanzi kunye nezinto ezinobungozi ezifana ne-chlorides kunye ne-sulfates. Le propati ibaluleke kakhulu kwizakhiwo ezivezwe kwiimeko zemozulu ezinzima okanye iimeko zemichiza, njengoko zandisa ubomi kunye nokuqina kwekhonkrithi.
Iipropati zoomatshini eziphuculweyo:
Ii-RDPs zinegalelo kumandla omatshini ngokubanzi wekhonkrithi. Baphucula amandla e-tensile kunye ne-flexural, ebalulekileyo kwingqibelelo yesakhiwo sezinto eziphathekayo. Oku kwandiswa kungenxa yosasazo olungcono loxinzelelo ngaphakathi kwekhonkrithi yematrix eququzelelwa yinethiwekhi yepolymer.
Ukuncitshiswa koKucutheka:
Udaka kunye nemixube yekhonkrithi kunye ne-RDP ibonisa ukunciphisa ukucutheka kunye nokuqhekeka. Iinqununu ze-polymer zinceda ukulawula ukuncipha okwenzekayo ngexesha lokumisa ngokusabalalisa uxinzelelo ngakumbi kwizinto eziphathekayo. Oku kubangela iintanda ezimbalwa kunye nesakhiwo esizinzile ngokubanzi.
Impembelelo ekuSetyenzisweni kweConcrete
Ukubandakanywa kwe-RDP kwimixube yekhonkrithi ye-mortar binder iguqula ngokuphawulekayo iimpawu zokusebenza zekhonkrithi, iyenze ibe yinto eguquguqukayo kwaye yomelele. Iindawo eziphambili zempembelelo ziquka:
Ubomi obude kunye noLondolozo:
Izakhiwo ezenziwe ngekonkrithi eyomeleziweyo ye-RDP zikholisa ukuba nobomi benkonzo obude kwaye zifuna ukulungiswa okuncinci. Ukuchasana okuphuculweyo kumanzi kunye nabahlaseli bendalo kuthetha ukuba ikhonkrithi igcina ingqibelelo yayo ixesha elide, ukunciphisa ukuphindaphinda kunye neendleko zokulungisa.
IiNzuzo zokusiNgqongileyo nezoQoqosho:
Ngokwandisa ubomi bezakhiwo eziphathekayo, ii-RDPs zinegalelo kuzinzo kulwakhiwo. Ukulungiswa okuncinci kunye nokutshintshwa kuthetha ukusetyenziswa okuphantsi kwezinto kunye namandla kumjikelezo wobomi besakhiwo. Ukongeza, ukusebenza okuphuculweyo kunye namaxesha okusebenza akhawulezayo kunokunciphisa iindleko zabasebenzi kunye namaxesha okwakha.
Umgangatho wobuhle:
Ii-RDPs zinceda ekufezekiseni ukugqitywa okugudileyo kunye nomgangatho ongcono womphezulu wekhonkrithi. Oku kubaluleke kakhulu kwizicelo zezakhiwo apho ubuhle bubaluleke kakhulu njengokwenziwa kolwakhiwo. Ukukwazi ukuvelisa i-crack-free, indawo egudileyo iphakamisa ukubukeka okubonakalayo kwezakhiwo ezigqityiweyo.
Usetyenziso olukhethekileyo:
Ukuguquguquka kwekhonkrithi eyomeleziweyo ye-RDP kuyenza ifaneleke kwizicelo ezikhethekileyo ezifana nokulungiswa kokusebenza okuphezulu, usetyenziso olucekethekileyo, kunye neejometri ezintsonkothileyo. I-adhesive yayo eyongeziweyo kunye neempawu eziguquguqukayo zivumela ubuchule bokwakha obutsha kunye nezisombululo ezingenakwenzeka ngemixube yekhonkrithi yendabuko.
Izifundo zeMyelo kunye nezicelo eziSebenzayo
Ukuqonda iziphumo ezinokwenzeka ze-RDP kwimixube yekhonkrithi yesibophelelo sodaka, kuyanceda ukuqwalasela izifundo ezithile kunye nokusetyenziswa:
Izinto zokuncamathelisa iithayile:
I-RDP isetyenziswa kakhulu kwi-tile adhesive formulations. Ukuncamathela okuphuculweyo kunye nokuguquguquka okubonelelwa yi-RDP kuqinisekisa ukuba iithayile zihlala zibotshelelwe ngokukhuselekileyo kwi-substrates, nakwiindawo eziphantsi kokufuma kunye nokuguquguquka kobushushu.
Lungisa udaka:
Xa kulungiswa udaka, i-RDP iphucula ukudityaniswa kodaka olutsha kwikhonkrithi endala, iqinisekisa ulungiso oluhlala luhleli kwaye olungenamthungo. Ukuguquguquka kunye nokumelana nokuqhekeka okubonelelwa yi-RDP kubalulekile ekugcineni ukuthembeka kwezakhiwo ezilungisiweyo.
IiNkqubo zaNgaphandle zokugquma iThermal (ETICS):
I-RDP yinxalenye ebalulekileyo kwi-ETICS, apho inceda ukubopha izinto zokugquma eludongeni lwangaphandle kunye nokuphucula ukusebenza ngokubanzi kwenkqubo yokugquma. I-adhesive eyandisiweyo kunye neempawu zokumelana nemozulu ziqinisekisa ukusebenza kwexesha elide lokugquma.
I-Redispersible Polymer Powders idlala indima ebalulekileyo kwimixube yekhonkrithi yodaka yanamhlanje. Ukukwazi kwabo ukomeleza ukusebenza, ukuncamathela, ukuguquguquka, ukumelana namanzi, kunye neempawu zoomatshini kubenza babaluleke kakhulu kwizicelo ezahlukeneyo zokwakha. Ngokuphucula ukuqina kunye nokusebenza kwekhonkrithi, ii-RDPs zinegalelo kubomi obude kunye nozinzo lwezakhiwo, ezibonelela ngeenzuzo zoqoqosho kunye nokusingqongileyo. Njengoko ubuchwephesha bokwakha buhambela phambili, indima ye-RDP kusenokwenzeka ukuba yande, ihlahlel indlela yezixhobo zokwakha ezintsha nezomelela.
Ixesha lokuposa: May-22-2024