Filastar - mai tabbatar da abu na ƙarni

Sau da yawa sosai, a karkashin daban-daban karewa aikin yin amfani da wani abu kamar gypsum plaster. Ko mutanen da suke da nisa daga gyara da kuma zane, san wannan sunan. Ga mutane da yawa ƙarni, shi ne manufa abu don maimaitawa kuma gyara daga gine-gine.

Very finely ƙasa gypsum plaster da bã ya halittar wani bambanci tsakanin sabon da haihuwa shafi ganuwar da ceilings. Ya na da kyau kwarai da wani tsari da kuma ba crack. Aiki tare da plaster fara da hadawa shi da ruwa. Tare da ta dace daidaito daga cikin kayan daidai cika da fasa kuma daukan nau'i na ko da kananan details.

Filastar yana da wani porous tsarin, don haka da cewa duk saman bi da tare da wannan abu, da iya mamaye sauti tãguwar ruwa, game da shi, da tabbatar da sauti rufi na cikin dakin. A farin launi da wannan abu ya sa ya yiwu don amfani da shi ba tare da ƙarin batawa inda dole manufa fari coatings.

Ta yaya ne wannan gini abu? Halitta gypsum, ciwon crystalline tsari, aka bi a high yanayin zafi. Kamar wancan akwai asarar ¾ na ruwa dauke cikinta, kuma a tuba a cikin ma'adinai kanta hemihydrate wanda, a lokacin da gauraye da ruwa sake sami wani halitta dutse tsarin. Tun da babu wani fiye da 1% na gypsum da aka kara wa sauran Organic abu da na halitta abubuwa, shi ne tsabtace muhalli mai lafiya ga mutane da dabbobi. Wannan gini abu na refractories, saboda haka taka muhimmiyar rawa a kare gine-gine daga wuta. Bugu da kari to duk wadannan kaddarorin, shi ne iya sha da wuce haddi danshi a cikin gabatarwa a lokacin da kiwon da ragewan ba danshi a da matakin.

Gypsum samar da dama iri. Common yi amfani da kayan Manufacturing gypsum kankare da gypsum kayayyakin, plaster allon, bangarori da kuma bangare faranti, gypsum-lemun tsami plaster mafita. High gypsum mold aka samar da musamman inji inganta al'ada yi abu da biyayya da shi zuwa wani m tsarkakewa da kuma milled. Saboda shi ya sa da stucco da sauran ado kayayyakin for ciki da facades. Filastar rabu da lokacin ta magance: 2-15 minti - fast saitin. 6-30 minti - al'ada-saitin. fiye da minti 20 - jinkirin-saitin.

A ƙarfi daga wannan abu ne m da alãmarsu, waxanda suke da daban-daban a cikin ta compressive ƙarfi (F-2, 3, 4, 5, 6, 7, 15, 10, 19, 16, 22, 25). Gypsum brands G-10, 16, 15 da aka dauke da za a kafa. Irin wannan abu ne ma free of impurities kuma a high ƙarfi.

Lokacin aiki tare da wannan abu da ya kamata a tuna da cewa ya sauri freezes, don haka ba kawai dafa babban adadin diluted plaster. The adadin ruwan da ake bukata, don samar da wata cakuda da al'ada daidaito, shi ne yawanci 50-80% (ga aikin gine-gine) da kuma 35-45% ga halittar daban-daban kayayyakin. Wuce kima ruwa zai iya zama a cikin pores na taurare abu, sa'ilin da shi evaporates. A sakamakon haka, da porosity na plaster zai zama kamar 50-60%. Yana da muhimmanci a tuna cewa kasa ruwa amfani ga dilution na gypsum, da denser zai zama karshe samfurin ko shafi, kuma mafi ta karko. Kiwon ko ragewan da yawan zafin jiki mugun rinjayar da ƙarfin da ƙarfafa abu. Don ƙara ƙarfin gypsum plaster ne, wani lokacin kara cikinta game da 5% slaked lemun tsami.

Domin likita amfani da ake kira polymer samar gypsum, wanda aka saukin amfani da wani ji rauni haƙuri ta jiki ta hanyar da bandeji. Yana daidai bi contours kuma yana da babban elongation. Wannan abu yana da high porosity, don haka da 'yan Adam fata ya ci gaba da numfashi, bisa wadãta, wanda ya hana da ya faru na ƙaiƙayi. Wani lokaci wadannan bandeji da aka yi amfani da haka cewa marasa lafiya za su iya yi wasu motsi. Wannan abu ba ya tsoma baki da likita da kuma hanyoyin da aiwatar da wani X-ray jarrabawa.