Ka lebaka la litšoaneleho tsa eona tsa hydration le sebopeho sa 'mele, gypsum ke thepa e ntle haholo ea kaho mme hangata e sebelisoa haholo mebarakeng ea mekhabiso ea malapeng le kantle ho naha. Leha ho le joalo, kaha gypsum e beha le ho thatafala ka potlako haholo, nako ea ho sebetsa hangata ke metsotso e 3 ho isa ho e 30, e leng bonolo ho fokotsa tšebeliso ea gypsum. Ka hona, ho bohlokoa haholo ho eketsa gypsum retarder.
Ha retarder e fetola nako ea ho lieha ea gypsum, e boetse e senya matla haholo.
Melemo ea gypsum retarder:
Ho eketsa chelete e ngata, nako e telele ea ho lieha
Boima bo phahameng ka mor'a ho kopana, bo se nang chefo, bo sa latsoeheng ebile bo na le botsoalle haholoanyane tikolohong
1. Pele kopanya kaho ea gypsum phofo le retarder, Yuhe hydroxypropyl methylcellulose kapa li-additives tse ling ka mokhoa o ts'oanang, ebe u eketsa lehlabathe, k'halsiamo e boima, joalo-joalo, eketsa lehlabathe kapa khalsiamo e boima 'me u hlohlelletse metsotso e 15 pele u lokolla. (Tlhokomeliso: Ka lebaka la matla a fapaneng a matla a thepa, ho tla ba le stratification ka mor'a ho tsosoa ha nako e telele, e tla ama boleng ba sehlahisoa.)
2. Bakeng sa lihlahisoa tse ling, tse kang hlobo ea gypsum le metsi a gel a sa sebetseng, o ka kenya retarder ka metsing pele, ebe oe eketsa ho e sebelisa ka mor'a ho qhibiliha.
Mekhoa e sebetsang ea lihlahisoa tsa gypsum
Stucco plaster boemo bo tlase:
Phofo e hloekileng ea gypsum 300 kg
700 kg lehlabathe le letle la noka
Hydroxypropyl methylcellulose 0.5-0.7 lik'hilograma
Gypsum retarder 0.8-1 lik'hilograma
Sekhomaretsi sa plaster (mofuta oa ho omisa butle):
Phofo e hloekileng ea gypsum 800 lik'hilograma
Phofo e boima ea calcium e boima ba lik'hilograma tse 200
Hydroxypropyl methylcellulose 2.5 lik'hilograma
Retarder 2.5 kg
Qetello ea ho penta (gypsum putty):
Phofo e hloekileng ea gypsum 500-700 lik'hilograma
Phofo e boima ea k'halsiamo 300-500 lik'hilograma
Hydroxypropyl methylcellulose 2-2.5 lik'hilograma
Gypsum retarder 1.5-2.1 lik'hilograma
plaster ea caulk:
700 kg ea phofo e hloekileng ea gypsum
Phofo e boima ea calcium 300 kg
Hydroxypropyl Cellulose 2.5kg
phofo ea latex e qhalakantsoeng 2kg
Gypsum retarder 2 kg
Nako ea poso: Apr-14-2023