Kupaka pulasitala kudzakhala njira yayikulu yopaka khoma lamkati m'tsogolomu
Gypsum yopaka pulasitala yomwe imagwiritsidwa ntchito pamakoma amkati imakhala ndi mawonekedwe opepuka, kuyamwa chinyezi, kutchinjiriza mawu, komanso moyo wabwino. Zipangizo zokutira za gypsum zidzakhala njira yayikulu yopaka khoma lamkati m'tsogolomu.
The hemihydrate gypsum ntchito mkati khoma pulasitala masiku ano zambiri β-hemihydrate gypsum, ndi hemihydrate desulfurized gypsum, kapena masoka gypsum, kapena phosphogypsum amene amakwaniritsa zofunika kuteteza chilengedwe amagwiritsidwa ntchito ambiri. Mphamvu ya thupi la gypsum imasiyanasiyana kuchokera ku 2.5 MPa mpaka 10 MPa. Ubwino wa hemihydrate gypsum opangidwa ndi opanga gypsum ndi wosiyana kwambiri chifukwa cha kusiyana kwa zopangira ndi njira.
Mapangidwe a Fomula ya Plastering Gypsum for Engineering
Gypsum yopaka pulasitala yomwe imagwiritsidwa ntchito mu engineering nthawi zambiri imakhala yolemera komanso yamchenga pulasitala gypsum. Chifukwa cha malo akuluakulu omangira, makulidwe owongolera ndi opitilira 1 cm. Ogwira ntchito amafunikira kuwongolera mwachangu, kotero gypsum imafunika kukhala ndi thixotropy wabwino. Kukwapula kwabwino, kumverera kopepuka kwa manja, kosavuta kuwunikira ndi zina zotero.
santhula:
1. Kusanja bwino. The gradation mchenga ndi bwino, ntchito sing'anga mchenga ndi wabwino mchenga.
2. thixotropy wabwino. Zimafunika kuti katundu wodzaza zinthuzo akhale bwino. Atha kupeza wandiweyani, nawonso amatha kupeza woonda.
3. Palibe kutaya mphamvu. Gwiritsani ntchito amino acid retarder, monga Italy Plast Retard PE.
Njira zopangira uinjiniya pulasitala gypsum:
β-hemihydrate desulfurized gypsum: 250 kg (mphamvu ya gypsum ndi pafupifupi 3 MPa)
150-200 mesh heavy calcium: 100 kg (kashiamu wolemera sikophweka kukhala wabwino kwambiri)
1.18-0.6mm mchenga: 400 kg (14 mauna-30 mauna)
0.6-0.075mm mchenga: 250 kg (30 mauna-200 mauna)
HPMC-40,000: 1.5 makilogalamu (Ndi bwino kutsuka HPMC katatu, mankhwala oyera, kuphulika kwa gypsum pang'ono, kukhuthala kochepa, kumverera bwino kwa manja, ndi voliyumu yaing'ono ya mpweya).
Rheological agent YQ-191/192: 0,5 kg (anti-sag, kuwonjezera kudzaza, kumva kuwala kwa manja, kumaliza bwino).
Pulasitiki Retard PE: 0.1 kg (mlingo sunakhazikitsidwe, wosinthidwa molingana ndi nthawi ya coagulation, mapuloteni, palibe kutaya mphamvu).
Chitsanzo cha raw material:
1.18-0.6 mm mchenga
0.6-0.075mm mchenga
β hemihydrate desulfurized gypsum (pafupifupi 200 mesh)
Makhalidwe a chilinganizo ichi ndi: kumanga bwino, mphamvu yachangu. Zosavuta kukweza, zotsika mtengo, zokhazikika bwino, zosavuta kung'amba. Oyenera mainjiniya.
Kulankhula zokumana nazo
1. Gypsum yobwerera kuchokera ku gulu lirilonse iyenera kuyang'aniridwa ndi ndondomeko yopangira kuti zitsimikizire kuti nthawi yoikika siinasinthe kapena ili mkati mwa njira yowongoka. Kupanda kutero, nthawi yokhazikitsa ndi yayitali kwambiri ndipo ndiyosavuta kusweka. Ngati nthawiyo ili yochepa kwambiri, nthawi yomangayo sikwanira. Nthawi zambiri, nthawi yoyambira yopangira mapangidwe ndi mphindi 60, ndipo nthawi yomaliza ya gypsum ili pafupi kwambiri ndi nthawi yoyambira.
2. Matope a mchenga asakhale aakulu kwambiri, ndipo matope ayenera kuyendetsedwa pa 3%. Tope lambiri ndilosavuta kung'amba.
3. HPMC, otsika mamasukidwe akayendedwe, mkulu khalidwe tikulimbikitsidwa. HPMC yotsuka katatu imakhala ndi mchere wochepa, ndipo matope a gypsum amakhala ndi chisanu chochepa. Kulimba kwapamwamba uku ndi mphamvu zili bwino
4. Posakaniza ufa wouma, nthawi yosakaniza sikuyenera kukhala yaitali. Zosakaniza zonse zitadyetsedwa, yambitsani kwa mphindi ziwiri. Kwa ufa wowuma, nthawi yayitali yosakaniza, ndi bwino. Patapita nthawi yaitali, retarder nayenso adzatayika. Ndi nkhani ya zochitika.
5. Kuwunika kwachitsanzo kwa zinthu. Ndikofunikira kuyesa ndikuwunika zomwe zamalizidwa kuyambira pachiyambi, pakati ndi kumapeto kwa mphika uliwonse. Mwanjira imeneyi, mudzapeza kuti nthawi yokhazikitsa ndi yosiyana, ndipo retarder iyenera kusinthidwa moyenera malinga ndi zosowa.
Nthawi yotumiza: Jan-18-2023