Dry poda dhaka idhaka rakapedzwa rakagadzirwa nemidziyo mufekitori kuburikidza nebhachi chaiyo uye kusanganisa yunifomu. Inogona kushandiswa chete nekuwedzera mvura uye kubvongodza panzvimbo yekuvaka. Pamusana pemhando dzakasiyana-siyana dzehupfu hwakaoma, inoshandiswa zvakanyanya. Chimwe chezvimiro zvayo zvikuru ndezvekuti iyo yakatetepa tambo inoita basa rekubatanidza, kushongedza, kudzivirira uye cushioning. Semuenzaniso, dhaka rine basa guru rekubatanidza rinonyanya kusanganisira dhaka remasonry, dhaka remadziro uye pasi mataira, kunongedza dhaka, anchoring dhaka, nezvimwewo; dhaka rine basa guru rekushongedza rinonyanya kusanganisira akasiyana-siyana ekupurasita, putty yemukati nekunze madziro, uye ine mavara ekushongedza dhaka. etc.; dhaka risingapindi mvura, dhaka rakasiyana-siyana rinodzivirira kuora, dhaka rinozvimisa pasi, dhaka risingapfeki, dhaka rinopisa rinopisa, dhaka rinotora ruzha, dhaka rekugadzirisa, dhaka rinodzivirira ukuru, dhaka rekudzivirira, nezvimwewo zvinoshandiswa kudzivirira. Naizvozvo, kuumbwa kwayo kwakaomesesa, uye kazhinji inoumbwa nesimbi, filler, mineral admixture, pigment, admixture nezvimwe zvinhu.
1. Binder
Zvishandiso zvesimende zvinowanzo shandiswa kuoma musanganiswa dhaka ndezvi: Portland simende, yakajairwa Portland simende, yakakwirira alumina simende, calcium silicate simende, yakasikwa gypsum, lime, silica fume uye musanganiswa wezvinhu izvi. Portland simende (kazhinji Type I) kana Portland chena simende ndiwo anosunga zvakanyanya. Mamwe masimende anokosha anowanzodiwa mudhaka repasi. Huwandu hwebhainda hunoita 20% ~ 40% yemhando yakaoma yemusanganiswa wechigadzirwa.
2. Filler
Iyo mikuru yekuzadza poda yakaoma ndeye: jecha yero, jecha requartz, limestone, dolomite, yakawedzera perlite, nezvimwewo. Aya mafiritsi anopwanyika, akaomeswa, uye obva apepetwa mumhando nhatu: yakaoma, yepakati, uye yakanaka. Iyo particle size ndeye: coarse filler 4mm-2mm, yepakati filler 2mm-0.1mm, uye yakanaka filler pazasi 0.1mm. Kune zvigadzirwa zvine diki diki saizi, yakanaka dombo poda uye yakarongwa limestone inofanirwa kushandiswa sekuunganidza. Ordinary dry powder mortar inogona kushandiswa kwete chete yakapwanyika limestone, asiwo yakaomeswa uye yakavharidzirwa jecha seaggregate. Kana jecha riri remhando yakakwana kuti rishandiswe mune yakakwirira-giredhi structural kongiri, inofanira kusangana nezvinodiwa pakugadzirwa kwemisanganiswa yakaoma. Kiyi yekugadzira dhaka yakaomeswa yehupfu ine hunhu hwakavimbika huri mukubata kwehukuru hwechimedu chezvakagadzirwa uye kurongeka kwereshiyo yekudyisa, iyo inowanikwa mumutsara wekugadzira otomatiki wehupfu hwakaoma.
3. Mineral admixtures
The chicherwa admixtures yakaoma upfu dhaka zvinonyanya: maindasitiri by-zvigadzirwa, marara maindasitiri uye dzimwe dzinongoitika ores, akadai: slag, nhunzi madota, inoputika madota, yakanaka silica upfu, etc. The kemikari zvinoumba admixtures izvi kunyanya nesilicon ine calcium oxide. Aluminium hydrochloride ine yakakwirira basa uye hydraulic kuoma.
4. Musanganiswa
Iyo yakasanganiswa ndiyo yakakosha yekubatanidza yakaomeswa poda dhaka, mhando uye uwandu hwekusanganiswa uye kuchinjika pakati pezvishongedzo zvine chekuita nekunaka uye kushanda kweiyo yakaoma poda dhaka. Kuti uwedzere kushanda uye kubatana kwedhaka rehupfu hwakaoma, kuvandudza kutsemuka kwedhaka, kuderedza kupera, uye kuita kuti dhaka risave nyore kubuda ropa nekuparadzanisa, kuitira kuvandudza kushanda kwekuvaka kweiyo yakaoma poda dhaka uye kuderedza mutengo wekugadzira. Zvakadai sepolymer rubber powder, huni fiber, hydroxymethyl cellulose ether, hydroxypropyl methyl cellulose, modified polypropylene fiber, PVA fiber uye zvakasiyana-siyana zvinoderedza mvura.
Nguva yekutumira: Kubvumbi-26-2024