Madhaka ekuvaka anoshandiswa zvakanyanya mumashandisirwo akasiyana-siyana muindasitiri yekuvaka senge plastering, flooring, tile uye masonry, etc. Dope rinowanzo kusanganiswa simende, jecha nemvura yakasanganiswa kuti iite paste. Mumakore achangopfuura, kwave kuri kuwedzera kudiwa kwezvinowedzera zvinowedzera kushanda kwemateki. Redispersible polymer poda (RDP) chinhu chakakurumbira chekuwedzera icho chinowedzerwa kune dhaka rekuvaka kusimudzira zvivakwa zvavo. Ichi chinyorwa chinopa tarisiro yebasa reRDP redispersible polymer poda additives mumatope ekuvaka.
Redispersible polymer powder ipolymer inoumbwa ne ethylene-vinyl acetate copolymer, acrylic acid uye vinyl acetate. Aya mapolymer akasanganiswa nezvimwe zvinowedzera senge mafirita, makobvu uye mabhainda kugadzira RDP hupfu. RDP hupfu hunoshandiswa mukugadzira zvinhu zvakasiyana siyana zvekuvaka zvinosanganisira zvekunamira mataira, simende-based motars uye leveling agents.
Imwe yemabhenefiti makuru ekushandisa RDP mumatope ekuvaka ndeyekuti inovandudza kushanda kwedhaka. RDP inowedzera kuwirirana kwedhaka, zvichiita kuti zvive nyore kuisa nekupararira. Kuvandudzwa kwekugadzirisa kunorevawo kuti mvura shoma inodiwa kuti iwane kuenderana kunodiwa. Izvi zvinoita kuti dhaka rirambe richinyanya kutsemuka nekupwanyika, zvichiita kuti rive rakasimba uye rinogara kwenguva refu.
Imwe bhenefiti yakakosha yekushandisa RDP mumatope ekuvaka ndeyekuti inovandudza kunamatira kwedhaka. Kunatsiridza kunamatira zvinoreva kuti dhaka rinoumba chisungo chakasimba nechepamusoro kuitira kuita zvirinani uye kusimba. RDP inosimudzirawo kuchengetedza kwemvura kwedhaka, kubatsira kudzivirira kurasikirwa kwemvura panguva yekuvaka. Izvi zvinobvumira dhaka kuti rigadzike uye riomese zvakaenzana, kuve nechokwadi chekuita kunoenderana uye kusimba.
RDP inowedzerawo kuchinjika kwedhaka, ichiita kuti ikwanise kumira kwenguva refu kushushikana uye kunetsa. Kuwedzera kuchinjika kwedhaka kunoreva kuti hainyanyi kutsemuka nekutyoka kunyangwe painenge ichiiswa mumamiriro ezvinhu akaomarara. Uku kuchinjika kwakagadziridzwa kunoreva zvakare kuti dhaka rinoita zvinhu zvakasiyana-siyana uye rinogona kushandiswa muhuwandu hwakawanda hwekushandisa, kusanganisira nzvimbo dzisina kuenzana uye dzakakombama.
Iko kushandiswa kweRDP mumatope ekuvaka zvakare kunowedzera simba rekumanikidza redhaka. Compressive simba chinhu chakakosha chekuvaka dhaka sezvo ichitarisa kuti dhaka rinoramba sei deformation uye kuputika pasi pemutoro. RDP inowedzera simba rekumanikidza redhaka, ichiita kuti ikwanise kumira mitoro inorema uye kuderedza mukana wekutsemuka nekukuvara.
Muchidimbu, kushandiswa kweRDP redispersible polymer poda additives mumatope ekuvaka kunopa huwandu hwezvakanaka zvinogona kuvandudza kushanda uye kusimba kwedhaka. RDP inokwidziridza kushanda, kunamatira, kuchengetedza mvura, kuchinjika uye kumanikidza simba redhaka, zvichiita kuti riwedzere kuenderana uye rinokodzera kuwanda kwekushandisa. Kushandisa RDP mumadhaka ekuvaka kunogadzira chigadzirwa chinoshanda, chinodhura uye chinogara kwenguva refu, zvichiita kuti ive sarudzo inowedzera kufarirwa kune vavaki nemakondirakiti.
Nguva yekutumira: Jun-29-2023