1. Kuchengeta Mvura
Kuchengetedza mvura mudhaka rekupurasita kwakakosha.Hydroxypropyl Methylcellulose (HPMC)ine simba rekuchengetedza mvura. Mushure mekuwedzera HPMC kudhaka rekupurasita, inogona kuumba dhizaini inochengetedza mvura mukati medhaka kudzivirira mvura kuti isanyurwe kana kuputika nekukasira nechigadziko. Semuenzaniso, paunenge uchiisa pane dzimwe nheyo dzakaoma, kana pasina maitiro akanaka ekuchengetedza mvura, mvura iri mudhaka ichakurumidza kubatwa nechigadziko, zvichiita kuti kusakwana kwe hydration ye simenti. Kuvapo kweHPMC kwakafanana ne "micro-reservoir". Zvinoenderana nezvidzidzo zvakakodzera, kupurasita dhaka ine huwandu hwakakodzera hweHPMC kunogona kuchengetedza hunyoro kwemaawa akati wandei kana kunyange mazuva akareba kupfuura iyo isina HPMC pasi penzvimbo imwe chete. Izvi zvinopa simende nguva yakakwana yekuenda ku hydration reaction, nekudaro inovandudza kusimba uye kusimba kweiyo plastering dhaka.
Kuchengetwa kwemvura kwakaringana kunogonawo kuvandudza kushanda kwedhaka rekupurasita. Kana iyo dhaka ikarasikirwa nemvura nekukurumidza, inooma uye yakaoma kushanda, nepo HPMC inogona kuchengetedza mapurasitiki edhaka, kuitira kuti vashandi vekuvaka vawane nguva yakakwana yekuenzanisa uye kutsvedzerera dhaka repurasita.
2. Kunamatira
HPMC inogona kuwedzera zvakanyanya kunamatira pakati pedhaka dhaka uye chigadziko. Iine maitiro akanaka ekubatanidza, izvo zvinogona kuita kuti dhaka rinyatsonamira kune hwaro hwepamusoro semadziro uye kongiri. Mumashandisirwo anoshanda, izvi zvinobatsira kudzivirira kuvhurika uye kudonha kwedhaka revhu. Kana HPMC mamorekuru akabatana nepamusoro pechigadziko uye zvimedu mukati medhaka, network yekubatanidza inoumbwa. Semuyenzaniso, pakupurasita dzimwe nzvimbo dzakatsetseka dzekongiri, dhaka repurasita rine HPMC rinowedzerwa rinogona kusungirirwa zvakanyanya pamusoro, kunatsiridza kugadzikana kwechimiro chepurasita, uye kuve nechokwadi chemhando yeprojekiti yekupurasita.
Kune mabhesi ezvigadzirwa zvakasiyana, HPMC inogona kutamba yakanaka yekusimudzira chisungo basa. Kunyangwe iri masonry, huni kana chigadziko chesimbi, chero chiri panzvimbo inodiwa dhaka, HPMC inogona kuvandudza mashandiro ekubatanidza.
3. Kushanda
Vandudza kushanda. Kuwedzerwa kweHPMC kunoita kuti dhaka rekupurasita rishande, uye dhaka rinova rakapfava uye rakapfava, izvo zviri nyore pakuvaka basa. Vashandi vekuvaka vanogona kuparadzira uye kukwenya dhaka zviri nyore kana vachiishandisa, kuderedza kuoma uye basa rekuvaka. Izvi zvinonyanya kukosha mumapurojekiti makuru ekupurasita, anogona kuvandudza kushanda kwekuvaka uye kunaka.
Anti-sagging. Kana uchipurasita panzvimbo dzakamira kana kuti dzakarerekera, kupurasita dhaka kunowanzoita kudonha, kureva kuti, dhaka rinoyerera richidzika pasi pechiito chegiravhiti. HPMC inogona kuwedzera viscosity uye kuenderana kwedhaka uye zvinobudirira kuramba sagging. Inogonesa dhaka kuti rirambe riri panzvimbo yakashandiswa risingatsvedzeri pasi kana kuyerera nekuremara, kuve nechokwadi chekudzika uye kunaka kwekupurasita. Semuenzaniso, mukuvaka kupurasita kwekunze kwemadziro ezvivakwa, iyo plastering dhaka ine HPMC yakawedzerwa inogona kunyatsoenderana nezvinodiwa zvekuvaka kwemadziro akamira, uye mhedzisiro yekuvaka haizokanganiswe nekudonha.
4. Simba uye kusimba
KubvaHPMCinova nechokwadi chekuti hydration yakazara ye simenti, kusimba kwedhaka rekupurasita kunovandudzwa. Iyo yakakwira dhigirii yesimende hydration, iyo yakawanda hydration zvigadzirwa zvinogadzirwa. Izvi zvigadzirwa zve hydration zvakarukwa kuti zvigadzire chimiro chakasimba, nekudaro zvinovandudza zviratidzo zvesimba zvedhaka, sekumanikidza uye kushanduka kwesimba. Mukufamba kwenguva, izvi zvinobatsirawo kuvandudza kusimba kwedhaka rekupurasita.
Panyaya yekusimba, HPMC inogona zvakare kuita rimwe basa mukuputsika kuramba. Iyo inoderedza kuitika kwekuomesa shrinkage kuputika kunokonzerwa nehunyoro husina kuenzana nekuchengetedza yunifomu yekugovera unyoro mumatope. Panguva imwecheteyo, iyo mvura yekuchengetedza mhedzisiro yeHPMC inoita kuti dhaka rirambe kukukurwa kwekunze kwemamiriro ekunze panguva yekushandiswa kwenguva refu, sekudzivirira kupindira kwakanyanya kweunyoro, kuderedza kukuvadzwa kwechiumbwa chevhu chinokonzerwa nechando-thaw kutenderera, nezvimwewo, zvichiwedzera hupenyu hwebasa redhaka rekupurasita.
Nguva yekutumira: Zvita-13-2024