Ona o ona lava hydration uiga ma le fausaga faaletino, gypsum o se mea fale sili ona lelei ma e masani ona faʻaaogaina i maketi teuteuga i totonu ma fafo. Ae ui i lea, talu ai o le gypsum seti ma faʻamaʻa vave, o le taimi faigaluega e masani lava 3 i le 30 minute, lea e faigofie ona faʻatapulaʻaina le faʻaogaina o le gypsum. O le mea lea, e taua tele le faʻaopoopoina o le gypsum retarder.
A'o suia e le fa'ata'ita'i le taimi fa'aletonu ole gypsum, e matua fa'aleagaina ai fo'i le malosi.
Tulaga lelei o le gypsum retarder:
Fa'aopoopo le aofa'i itiiti, umi le taimi fa'ata'ita'i
Ma'a'a maualuga atu pe a mae'a fa'a'au'au, e le o'ona, leai se tofo ma sili atu le faauo i le si'osi'omaga
1. Faʻafefiloi muamua le paʻu paʻu gypsum fau ma retarder, Yuhe hydroxypropyl methylcellulose poʻo isi faʻaopoopoga tutusa, ona faʻaopopo lea o oneone, calcium mamafa, ma isi, faʻaopopo oneone poʻo calcium mamafa ma faʻafefe mo le 15 minute aʻo leʻi tuʻuina atu. (Manatua: Ona o le eseese o le mamafa o meafaitino, o le ai ai le stratification pe a uma le faʻavevesi umi, lea o le a aʻafia ai le lelei o oloa.)
2. Mo isi oloa, e pei o le gypsum mold ma le vai gel tuai, e mafai ona e tuʻu muamua le faʻamaʻi i totonu o le vai, ona faʻaopopo lea e faʻaaoga pe a uma ona faʻamavae.
Fa'ata'ita'iga fa'atino o oloa gypsum
Stucco pito pito i lalo:
Pa'u gypsum mama 300 kilokalama
700 kilokalama oneone mama
Hydroxypropyl methylcellulose 0.5-0.7 kilokalama
Gypsum retarder 0.8-1 kilokalama
Fa'amau fa'apipi'i (ituaiga fa'agogo lemu):
Pa'u gypsum mama 800 kilokalama
O le pauta calcium mamafa 200 kilokalama
Hydroxypropyl methylcellulose 2.5 kilokalama
Retarder 2.5 kilokalama
Vali fa'ama'i fa'auma (gypsum putty):
Pa'u gypsum mama 500-700 kilokalama
O le pauta calcium mamafa 300-500 kg
Hydroxypropyl methylcellulose 2-2.5 kilokalama
Gypsum retarder 1.5-2.1 kilokalama
fa'amea fa'apipi'i:
700 kilokalama o le pauta gypsum mama
O le pauta calcium mamafa 300 kilokalama
Hydroxypropyl Cellulose 2.5kg
Pa'u latex fa'asalalauina 2kg
Gypsum retarder 2 kilokalama
Taimi meli: Apr-14-2023