Ngokomlinganiselo owahlukileyo, ukusetyenziswa kwei-polymer powder enokuchithwa kwakhonaukulungisa iudaka olomileyo oluxutyiweyoinokuphucula amandla ebhondi kunye nama-substrates ahlukeneyo, kunye nokuphucula ukuguquguquka kunye nokukhubazeka kodaka, amandla okugoba, ukuxhathisa ukunxiba, ukuqina, amandla okudibanisa kunye nokuxinana, amandla okugcina amanzi kunye nokusebenza.
Inani elikhulu leemvavanyo libonisa ukuba inani leRDumgubohayi ngcono ngakumbi.Xa umxholo we-RD powder uphantsi kakhulu, udlala kuphela umphumo weplastiki, kodwa umphumo wokuphucula awubonakali.Xa isixa seumgubo we-RDinkulu kakhulu, amandla aya kuncipha.Kuphela xa umxholo we-RD powder uphakathi, awugcini nje ukwandisa ukuchasana kwe-deformation, uphucula amandla okuqina kunye nokuqina kwebhondi, kodwa uphucula ukunyanzeliswa kunye nokuchasana nokuqhekeka.Umlinganiselo wekalika kunye nesanti, umlinganiselo wamanzi kunye nesamente, ukuhlelwa kunye nodidi lwe-aggregate, kunye neempawu ze-aggregate ekugqibeleni ziya kuchaphazela ukusebenza okubanzi kwemveliso.
Impembelelo yeziphinde zisasazwelatexumguboekomeleleni kodaka kukuba amandla okuqina kunye namandla aguquguqukayo odaka anokwandiswa kakhulu emva kokongezwa kodaka.ziphinde zisasazweipholimaumgubo,kodwa amandla oxinzelelo akaphuculwanga kakhulu okanye ancitshiswe.Ngenxa yefuthe eliqinileyo leziphinde zisasazweipholimaumgubo, amandla okuqina angaphakathi kunye ne-interfacial bonding amandla okuqina odaka ayaphuculwa, kwaye amandla okuqina okudibanisa phakathi kodaka kunye ne-substrate aphuculwa kakhulu.
Ukuqhekeka kwezinto ezinqabileyo kubangelwa ikakhulu kukungaphumeleli kwe-tensile, xa uxinzelelo lwe-tensile ludlula ixabiso lalo lokuqina, ukuqhekeka kuya kwenzeka.Ke ngoko, ukuba nexabiso eliphakamileyo lamandla okuqina yimeko eyimfuneko yokumelana nokuqhekeka.
Iziphumo zibonisa ukuba amandla okuqina e-polymer-modified cement mortar ngokubanzi ayanda kuqala kwaye ayancipha ngokunyuka kwe-samente-cement ratio, ebonisa ukuba kukho uluhlu oluhle lokuxuba.Isizathu sokuhla ngokuqhelekileyo ngenxa yokongezwa ngokugqithiseleyoi-emulsion powder efumanekayo kwakhonaokukhokelela ekwazisweni kwamaqamza amaninzi kakhulu, okukhokelela kwindlela yokuhla kumandla acinezelayo.Ngoko ke, amandla okucinezela kufuneka aphuculwe ngokulungelelanisa umlinganiselo wekalika nesanti, amanzi kwisamente, udidi oludityanisiweyo kunye nodidi oludityanisiweyo.Ukuphuculwa kwamandla okuqina, amandla okuguquguquka, ukuguquguquka, ukumelana nokuqhekeka kunye ne-hydrophobicity inokufezekiswa ngokungezaziphinde zisasazwelatexumgubo, kodwa ngakumbi ukongezwa, kungcono.Xa umxholo womgubo werabha uphantsi kakhulu, udlala kuphela isiphumo seplastiki, kodwa umphumo wokuphucula awubonakali.Xa ubungakanani bepowder edispersible bukhulu kakhulu, amandla aya kuncipha.Kuphela xa umxholo weziphinde zisasazweumguboimodareyitha, ayinyusi kuphela ukuxhathisa ukuguqulwa, amandla okuqina kunye namandla ebhondi, kodwa iphucula ukungeneka kunye nokumelana nokuqhekeka.Umlinganiselo wekalika kunye nesanti, umlinganiselo wamanzi kunye nesamente, ukuhlelwa kunye nodidi lwe-aggregate, kunye neempawu ze-aggregate ekugqibeleni ziya kuchaphazela ukusebenza okubanzi kwemveliso.
Ixesha lokuposa: Feb-26-2024