Ongororo yekupwanya zvikonzero zvekupura gypsum layer
1. Chikonzero chekuongorora chekupura gypsum mbishi zvinhu
a) Purasi yekuvaka isina kukodzera
Kuvaka gypsum ine yakakwira yemukati ye dihydrate gypsum, iyo inotungamira nekukurumidza kusungirirwa kwekupurasita gypsum. Kuti uite plastering gypsum ine nguva yekuvhura yakakodzera, yakawanda retarder inofanira kuwedzerwa kuti mamiriro acho awedzere; soluble anhydrous gypsum mukuvaka gypsum AIII High content, AIII yekuwedzera yakasimba kudarika β-hemihydrate gypsum mune yakazotevera, uye kushanduka kwevhoriyamu yekupurasita gypsum haina kuenzana panguva yekurapa, zvichikonzera kuputika kukuru; zvinyorwa zvinorapika β-hemihydrate gypsum mukuvaka gypsum yakaderera, uye kunyange huwandu hwese hwe calcium sulfate yakaderera;Kuvaka gypsum kunobva kumakemikari gypsum, iyo yakatsetseka idiki, uye kune akawanda powders pamusoro pe400 mesh; saizi yechikamu chekuvaka gypsum haina kuroorwa uye hapana gradation.
b) Zvinowedzerwa zvisina mwero
Haisi mukati meiyo inonyanya kushanda pH yemhando ye retarder; iyo gel inoshanda ye retarder yakaderera, huwandu hwekushandisa hwakakura, simba rekupura gypsum rakaderedzwa zvakanyanya, nguva yepakati pakati pekutanga kugadzika nguva uye yekupedzisira yekuisa nguva yakareba; chiyero chekuchengetedza mvura ye cellulose ether yakaderera, kurasikirwa kwemvura kunokurumidza; cellulose ether inonyungudika zvishoma nezvishoma, isingakodzeri mechanical spraying kuvaka.
Solution:
a) Sarudza gypsum yekuvaka inokwanisa uye yakagadzikana, nguva yekutanga yekuisa inopfuura 3min, uye simba rekuchinja rinopfuura 3MPa.
b) Sarudzacellulose etherine diki diki saizi uye yakanakisa kuchengetedza mvura.
c) Sarudza retarder ine zvishoma mhedzisiro pakugadzika kweiyo plastering gypsum.
2. Chikonzero chekuongorora kwevashandi vekuvaka
a) Kondirakiti yepurojekiti anotora vashandisi vasina ruzivo rwekuvaka uye haaite yakarongeka induction kudzidziswa. Vashandi vekuvaka havana kugona hunhu hwekutanga uye zvakakosha zvekuvaka zvekupurasita gypsum, uye havagone kushanda zvinoenderana nemirairo yekuvaka.
b) Iyo tekinoroji manejimendi uye manejimendi emhando yeinjiniya contracting unit haina kusimba, hapana manejimendi panzvimbo yekuvaka, uye mashandiro asingaenderane evashandi haagone kugadziriswa nenguva;
c) Mazhinji emabasa ekupurasita uye gypsum plastering ari muchimiro chekuchenesa basa, achitarisa kuwanda uye kusateera kunaka.
Solution:
a) Kupurasita mapurojekiti makondirakiti anosimbisa-pa-basa kudzidziswa uye kuitisa kuburitswa kwehunyanzvi kusati kwavakwa.
b) Kusimbisa manejimendi enzvimbo yekuvaka.
3. Chikonzero chekuongorora chekupura plaster
a) Simba rekupedzisira rekupura gypsum rakaderera uye harigoni kurwisa shrinkage kushungurudzika kunokonzerwa nekurasikirwa kwemvura; iyo yakaderera simba yekupurasita gypsum inokonzerwa neasina kukodzera mbishi zvinhu kana zvisina musoro formula.
b) Kupokana kweiyo plastering gypsum haina kukodzera, uye iyo plastering gypsum inounganidza pazasi, uye ukobvu hwakakura, zvichikonzera kutsemuka kwakachinjika.
c) Nguva yekusanganisa yekupurasita gypsum dhaka ipfupi, zvichikonzera kusaenzana kusanganiswa kwedhaka, kusimba kwakaderera, kuderera uye kusaenzana kwekuwedzera kweiyo plastering gypsum layer.
d) Iyo plastering gypsum mortar iyo yakatanga kusetwa inogona kushandiswa zvakare mushure mekuwedzera mvura.
Solution:
a) Shandisa inokwanisa plastering gypsum, inosangana nezvinodiwa zveGB/T28627-2012.
b) Shandisai matchinginging equipment kuona kuti plastering gypsum nemvura zvakasanganiswa.
c) Zvinorambidzwa kuwedzera mvura mudhaka iyo yakambogadzikwa, wozoishandisa zvakare
4. Chikonzero chekuongorora kwezvinhu zvekutanga
a) Parizvino, zvinhu zvitsva zvemadziro zvinoshandiswa mumasonry ezvivakwa zvakagadzirirwa, uye kuomesa kwavo shrinkage coefficient yakakura. Kana zera rezvivharo risina kukwana, kana hunyoro hwezvivharo hwakanyanyisa, nezvimwewo, mushure menguva yekuomeswa, kuputika kuchaonekwa pamadziro nekuda kwekurasikirwa kwemvura uye kupera, uye chigadziko chepurasita chichaputikawo.
b) Iko kusanganiswa pakati peiyo furemu chimiro kongiri nhengo uye madziro zvinhu ndipo panosangana zvinhu zviviri zvakasiyana, uye iwo mutsara wekuwedzera coefficients akasiyana. Kana tembiricha ichichinja, deformation yezvinhu zviviri izvi haina kuwiriraniswa, uye kupatsanurwa kwakaparadzana kuchaonekwa. Makoramu emadziro akajairika Kutsemuka kwakatwasuka pakati pematanda nekutsemuka kwakachinjika pazasi pedanda.
c) Shandisa aluminium formwork kudira kongiri panzvimbo. Pamusoro pekongiri inotsvedzerera uye isina kusungirirwa kune plastering plaster layer. Iyo plastering plaster layer inovharika zviri nyore kubva pachigadziko chepasi, zvichiita kuti pave nekutsemuka.
d) Zvigadziko zvepasi uye gypsum yekupura zvine mutsauko mukuru mugiredhi resimba, uye pasi pechiito chekubatana chekuomesa shrinkage uye tembiricha shanduko, kuwedzera uye kuputika hazvienderane, kunyanya kana iyo base-level light wall zvinhu ine yakaderera density uye yakaderera simba, iyo plastering gypsum layer inowanzoburitsa ice. Tambanudza kuputika, kunyange nzvimbo yakakura yegomba. e) Chigadziko chepasi chine mwero wekutora mvura wakakwira uye kukurumidza kunyura kwemvura.
Solution:
a) Chigadziko chekongiri chichangobva kuroverwa chinofanira kuoma kwemazuva gumi muzhizha uye kupfuura mazuva makumi maviri muchando pasi pemamiriro ekufema kwakanaka. Iyo yepamusoro inotsvedza uye hwaro hunotora mvura nekukurumidza. Interface agent inofanira kushandiswa;
b) Zvishandiso zvekusimbisa senge jira regridi zvinoshandiswa panosangana madziro emhando dzakasiyana
c) Zvishandiso zvemadziro zvakareruka zvinofanirwa kuchengetedzwa zvizere.
5. Chikonzero chekuongorora nzira yekuvaka
a) Iyo base layer yakanyanya kuoma pasina kunyorova kana kushandiswa kweiyo interface agent. Iyo plastering gypsum inosangana neiyo base layer, hunyoro mu gypsum yekupura inokurumidza kutorwa, mvura inorasika, uye huwandu hweiyo plastering gypsum layer inoderera, zvichikonzera kuputika, kukanganisa kuwedzera kwesimba uye kuderedza simba rekubatanidza.
b) Hunhu hwekuvaka hwechigadziko husina kunaka, uye nzvimbo yekupurasita gypsum layer yakanyanya kukora. Kana plastering plaster ikaiswa panguva imwe chete, dhaka rinodonha uye kuita mitswe yakachinjika.
c) Hydroelectric slotting haina kubatwa nemazvo. Hydropower slots haina kuzadzwa necaulking gypsum kana yakanaka dombo kongiri ine yekuwedzera agent, zvichikonzera shrinkage kuparuka, izvo zvinotungamira kupaza kweiyo plastering gypsum layer.
d) Hapana kurapa kwakakosha kwekubaya mbabvu, uye gypsum layer yakavakirwa munzvimbo yakakura inotsemuka mbabvu dzinobaya.
Solution:
a) Shandisa yemhando yepamusoro interface mumiriri kubata base layer ine yakaderera simba uye nekukurumidza kunyudza mvura.
b) Ukobvu hwekupurasita gypsum layer yakakura, inodarika 50mm, uye inofanirwa kukweshwa mumatanho.
c) Ita maitiro ekuvaka uye kusimbisa hutongi hwemhando yenzvimbo yekuvaka.
6. Chikonzero chekuongorora nzvimbo yekuvaka
a) Mamiriro ekunze akaoma uye anopisa.
b) Kumhanya kwemhepo
c) Mukutanga kwechirimo nezhizha, tembiricha yakakwira uye hunyoro hwakaderera.
Solution:
a) Kuvaka hakubvumidzwe kana paine mhepo ine simba yedanho rechishanu kana pamusoro, uye kuvaka hakubvumidzwe kana tembiricha yepakati yakakwira kupfuura 40 ℃.
b) Mukutanga kwechirimo nechirimo, gadzirisa nzira yekugadzira yekupurasita gypsum.
Nguva yekutumira: Kubvumbi-25-2024