Saboda halayen hydration na kansa da tsarin jiki, gypsum kayan gini ne mai kyau sosai kuma galibi ana amfani dashi a kasuwannin kayan ado na gida da na waje.Duk da haka, tun lokacin da gypsum ya saita kuma ya taurare da sauri, lokacin aiki yawanci shine minti 3 zuwa 30, wanda yake da sauƙi don iyakance amfani da gypsum.Sabili da haka, yana da mahimmanci musamman don ƙara gypsum retarder.
Yayin da retarder yana canza lokacin jinkiri na gypsum, shima yana lalata ƙarfi sosai.
Amfanin gypsum retarder:
Ƙara ƙarancin adadin, tsawon lokacin jinkirtawa
Mafi girman taurin bayan coagulation, maras guba, rashin ɗanɗano kuma mafi kyawun muhalli
1. Da farko Mix ginin gypsum foda tare da retarder, Yuhe hydroxypropyl methylcellulose ko sauran additives a ko'ina, sa'an nan kuma ƙara yashi, nauyi alli, da dai sauransu, ƙara yashi ko nauyi alli da motsawa na mintina 15 kafin a sakewa.(Lura: saboda takamaiman nauyi na kayan, za a sami daidaituwar bayan motsawa na dogon lokaci, wanda zai shafi ingancin samfurin.)
2. Don wasu samfurori, irin su mold gypsum da ruwan gel na retarded, za ku iya sanya retarder a cikin ruwa da farko, sa'an nan kuma ƙara shi don amfani bayan narkewa.
Abubuwan da ake amfani da su na samfuran gypsum
Babban matakin stucco:
Pure gypsum foda 300 kg
700 kg lafiyayyen kogi yashi
Hydroxypropyl methylcellulose 0.5-0.7 kg
Gypsum retarder 0.8-1 kg
Plaster m (nau'in bushewa a hankali):
Pure gypsum foda 800 kg
Calcium foda mai nauyi 200 kg
Hydroxypropyl methylcellulose 2.5 kg
Matsakaicin nauyi - 2.5 kg
Paint plaster gama (gypsum putty):
Pure gypsum foda 500-700 kg
Calcium foda mai nauyi 300-500 kg
Hydroxypropyl methylcellulose 2-2.5 kg
Gypsum retarder 1.5-2.1 kg
farantin karfe:
700 kg na gypsum foda mai tsabta
Calcium foda mai nauyi 300 kg
Hydroxypropyl cellulose 2.5kg
Watsawa latex foda 2kg
Gypsum retarder 2 kg
Lokacin aikawa: Afrilu-14-2023