Redispersible polymer powders (RDPs) akopa chidwi chambiri pantchito yomanga chifukwa cha kuthekera kwawo kupititsa patsogolo zinthu zosiyanasiyana zamatope ndi zinthu zopangidwa ndi simenti.Chimodzi mwazabwino zazikulu za RDP ndikutha kukulitsa kukana kugwa, gawo lofunikira pakumanga.
Redispersible polymer powders (RDP) zakhala zowonjezera zowonjezera muzomangamanga, zopatsa maubwino osiyanasiyana kuphatikiza kumamatira bwino, kusinthasintha, kukana madzi komanso kukana kwamadzi.Kukaniza kwa Sag kumatanthauza kuthekera kwa chinthu kuti chisungike mawonekedwe ake ndikuletsa kuyenda kapena kupindika kukagwiritsidwa ntchito molunjika kapena pamwamba.Muzomangamanga monga zomatira matailosi, plasters ndi stuccoes, kukana kwa sag ndikofunikira kuti zitsimikizire kuyika koyenera komanso kugwira ntchito kwanthawi yayitali.
Katundu wa Redispersible Polymer Powder (RDP)
RDP nthawi zambiri imapangidwa kudzera mu kuyanika kopopera komwe kubalalitsidwa kwa polima kumasinthidwa kukhala ufa wopanda madzi.Makhalidwe a RDP, kuphatikiza kukula kwa tinthu, kutentha kwa magalasi, mtundu wa polima, ndi kapangidwe kake ka mankhwala, amatenga gawo lofunikira pakuzindikira momwe amagwirira ntchito pomanga.Kugawidwa kwa tinthu tating'onoting'ono kwa RDP kumakhudza kubalalitsidwa kwake, kupanga mafilimu ndi makina, zomwe zimakhudzanso kukana kwa sag.
1.Njira ya RDP yowongola katundu wa anti-sag
Pali njira zingapo zomwe zimapangitsa kuti RDP ichuluke kukana kugwa:
a.Kudzaza Tinthu: Tinthu tating'onoting'ono ta RDP timatha kudzaza ma voids ndikuwonjezera kachulukidwe ka matope kapena zomatira, potero zimakulitsa kukana kwake.
b.Kapangidwe ka filimu: RDP imapanga filimu yosalekeza ikathiridwa madzi, kulimbitsa matrix amatope ndikupereka mgwirizano, potero kumachepetsa chizolowezi cha kugwa.
C. Kusinthasintha: Zomwe zimapangidwira za RDP zimathandizira kusinthasintha kwa matope, kuwalola kupirira kupsinjika ndi kusinthika popanda kugwedezeka.
d.Kusungirako madzi: RDP ikhoza kupititsa patsogolo mphamvu yosungira madzi mumatope, kuonetsetsa kuti madzi akugwira ntchito kwa nthawi yaitali komanso kuchepetsa chiopsezo cha kuchepa panthawi yomanga.
2. Zinthu zomwe zimakhudza kusakhazikika kwamphamvu
Pali zinthu zambiri zomwe zimakhudza kusakhazikika kwa zinthu za simenti, kuphatikiza:
a.Mapangidwe: Mtundu ndi kuchuluka kwa RDP, komanso zowonjezera zina monga thickeners ndi dispersants, zingakhudze kwambiri sag resistance.
b.Kusasinthasintha: Kugwirizana kwamatope kapena zomatira kumatsimikiziridwa ndi zinthu monga chiŵerengero cha madzi ndi zomatira ndi ndondomeko yosakanikirana, ndipo zimagwira ntchito yofunikira pakukana kwa sag.
C. Makhalidwe a gawo lapansi: Zomwe zimapangidwira pansi, monga porosity ndi roughness, zimakhudza kumamatira ndi kusasunthika kwa zinthu zomwe zimagwiritsidwa ntchito.
d.Zachilengedwe: Kutentha, chinyezi, komanso kutuluka kwa mpweya kumatha kukhudza kuyanika ndi kuchiritsa, potero kumakhudza kukana kwa sag.
3. Kuwunika kukana kwa sag
Njira zosiyanasiyana zingagwiritsidwe ntchito poyesa kukana kwa sag kwa zida zomangira, kuphatikiza:
a.Mayeso oyenda: Mayeso oyenda, monga mayeso otsika ndi mayeso a benchi oyenda, amagwiritsidwa ntchito nthawi zambiri kuwunika momwe mayendedwe amayendera komanso kusasinthika kwamatope ndi zomatira.
b.Kuyesa kwa Sag: Kuyesa kwa sag kumaphatikizapo kugwiritsa ntchito chitsanzocho molunjika kapena pamwamba ndikuyesa kuchuluka kwa sag pakapita nthawi.Njira monga kuyesa ma cone ndi kuyesa kwa tsamba zimagwiritsidwa ntchito kutsimikizira kukana kwa sag.
C. Rheological miyeso: Rheological magawo, kuphatikizapo mamasukidwe akayendedwe, zokolola nkhawa ndi thixotropy, kupereka kuzindikira otaya ndi mapindikidwe khalidwe la zomangamanga.
d.Kuchita mwanzeru: Pamapeto pake, kukana kwa zinthu kuti zisagwe kumawunikidwa potengera momwe zimagwirira ntchito pazochitika zenizeni, monga kuyika matailosi ndi ma facade.
4. Kugwiritsa ntchito RDP pakulimbikitsa kusamvana
RDP imagwiritsidwa ntchito kwambiri muzomangamanga kuti ipititse patsogolo kukana kwa sag:
a.Zomatira za matailosi: RDP imathandizira kumamatira ndi kukana kwa zomatira za matailosi, kuwonetsetsa kulumikizana koyenera ndikuchepetsa kutsetsereka kwa matailosi pakuyika.
b.Kupereka ndi Stucco: Pa pulasitala yakunja ndi stucco, RDP imawonjezera kukana ndikulola kuti ikhale yosalala, ngakhale yoyika pamalo oyimirira popanda kugwa kapena kupindika.
C. Zodzipangira zokha: RDP ikhoza kuphatikizidwa m'magulu odzipangira okha kuti apititse patsogolo kuyenda ndi kusasunthika, zomwe zimapangitsa kuti pakhale pansi komanso pansi.
d.Nembanemba yopanda madzi: RDP imakulitsa kukana kwa nembanemba yosalowa madzi, kuwonetsetsa kuti kuphimba ndikupereka chitetezo chodalirika chamadzi.
5. Nkhani ndi zitsanzo
Maphunziro angapo ndi zitsanzo zikuwonetsa mphamvu ya RDP pakuwongolera kukana kwamphamvu:
a.Phunziro 1: Kugwiritsa ntchito RDP mu zomatira matailosi pama projekiti akulu akulu azamalonda, kuwonetsa kulimba kwa sag komanso kulimba kwa nthawi yayitali.
b.Phunziro 2: Kuunikira kwa mawonekedwe osinthidwa a RDP m'ma facade omwe akuwonetsa kusasunthika kwapamwamba komanso kusasunthika kwa nyengo.
C. Chitsanzo 1: Kufananiza kusasunthika kwa matope ndi popanda zowonjezera za RDP, kuwonetsa kusintha kwakukulu komwe kunachitika ndi RDP.
d.Chitsanzo 2: Mayesero a RDP yosinthidwa yodziyimira pawokha, kuwonetsera kumasuka kwa kagwiritsidwe ntchito ndi kukana kwamphamvu pansi pa zochitika zenizeni.
Redispersible polymer powders (RDP) amatenga gawo lofunikira popititsa patsogolo kulimba kwa zida zomangira, kupereka kuphatikiza kwamakina olimbikitsa, kupanga mafilimu ndi kusunga madzi.Pomvetsetsa njira ndi zinthu zomwe zimakhudza kukana kwamphamvu ndikugwiritsa ntchito njira zoyenera zowunikira, mainjiniya ndi makontrakitala atha kugwiritsa ntchito bwino RDP kuti akwaniritse zomanga zolimba komanso zogwira mtima kwambiri.Kupyolera mu kafukufuku wopitilira komanso ukadaulo, RDP ikuyembekezeka kupitiliza kukhala chowonjezera pakuthana ndi zovuta zokhudzana ndi kugwa komanso kupititsa patsogolo gawo lazomangamanga.
Nthawi yotumiza: Feb-28-2024