Te raima - he rauemi tamatahia mō tenetere

Tino maha, i raro i ngā mahi mutunga te whakamahi i te rauemi pērā i gypsum te raima. Ahakoa iwi e matara atu ana i te hanga, me te hoahoa, mohio tenei ingoa. No te rau tau maha, ko reira te rauemi pai mō te anō me te hanga o ngā whare.

e kore e te raima gypsum rawa minita hurihia te waihanga i tētahi rerekētanga i waenganui i te hou, me te tawhito taiepa paninga me tuanui. He ia he hanganga pai, me te kore e anganga te reira. Mahi ki te raima tīmata mā te ranu i te reira ki te wai. Ki te ōrite tika o te rauemi tino whakakiia ana nga kapiti, me te tango i te ahua o kōrero noa iti.

Te raima he hanganga maiengi, kia e mata katoa tukinotia ki tenei rauemi, pai ahei o te ngongo ngaru oro, reira whakarite mātao tangi o te ruma. Ko te tae ma o tenei rauemi hanga reira taea ki te whakamahi i te reira, kahore atu poke te wahi e tika ana coatings ma pai.

Kia pehea te ko tenei rauemi whare? Natural gypsum, he hanganga, tioata tukinotia, kei i pāmahana teitei. Ko te kupu i reira ko te mate o ¾ o te wai i roto roto, a tahuri ana ki te kohuke hemihydrate iho e, ka whakaranua ki te wai e tango ano te hanganga kohatu tūturu. Mai te tapiritia kaua e nui ake 1% o te gypsum ki te tahi atu rauemi organic o matū māori, he reira taiao haumaru mō ngā tangata me te kararehe. Ko tēnei rauemi hanga o refractories, koia e whai wāhi nui i roto i te tiaki i ngā whare i te ahi. I tua atu ki enei āhuatanga katoa, he reira e taea ki te takanga mai makuku te taikaha i roto i te whare i roto i tona kohi, me te e tukupu ana hoatu makuku i tona taumata.

Gypsum hua maha ngā momo. rauemi hanga noa e whakamahia ana mō te hokohoko i gypsum raima me te gypsum hua, papa raima, awhi me mau api tataitia, raima gypsum-kotakota rongoā. whakaputaina pokepokea ai gypsum High e whakapai ake aunoa motuhake rauemi hanga tikanga e ngohengohe reira ki te atu purenga me te paräoa. No te mea hanga ana e ia te stucco me ētahi atu hua whakapaipai mō wanihi me facades. Te raima wehea e te wa o tona haamărôraa: 2-15 meneti - tautuhinga nohopuku; 6-30 meneti - noa-tautuhinga; neke atu i te 20 meneti - te puhoi-tautuhinga.

whakaritea te kaha o tenei rauemi e te tohu, e te hunga rerekē i roto i tona kaha shock (F-2, 3, 4, 5, 6, 7, 15, 10, 19, 16, 22, 25). rama gypsum G-10, 16, 15 whakaaro te ki kia hanga. Ko nui noa o poke me te kaha teitei peheé rauemi.

A, no te mahi ki tenei rauemi kia mahara ai ia hohoro paari, na e kore e tunu noa he nui nui o te raima diluted. Ko te nui o te wai e hiahiatia ki te whakaputa i te ranunga o te ōrite noa, he nuinga 50-80% (mo te mahi hanga) me 35-45% mo te hanganga o ngā hua. Ka taea e te wai nui noho i roto i te kōputaputa o te rauemi whakapakeke, taunga nei evaporates reira. Ka rite ki te hua, te porosity o te raima, ka kia tata 50-60%. He mea nui ki te mahara e iti iho i te wai e whakamahia ana mō te waimehatanga o gypsum, ka hei te apiapi te hua whakamutunga ranei paninga, me te nui tona mauroa. Te whakatairanga e tukupu te pāmahana ranei kino pānga te kaha o te rauemi ua haapuai. Hei whakanui i te kaha o te gypsum te raima te ētahi wā tāpiri tukunga e pā ana ki 5% kotakota slaked.

Hoki te whakamahi hauora pera-ka karanga waerau hua gypsum, kei te ngāwari i tono ki te tinana o te manawanui kafó roto i te tipare. Te reira i tino whai i te takiwa, me te kua he elongation tiketike. Ko tēnei rauemi he porosity tiketike, na ki te manawa noa, e ārai te takanga o patito tonu te kiri tangata. Ētahi wā tono enei tapo'io te kia e taea e tūroro etahi kaupapa. e kore e tēnei rauemi pokanoa ki ngā tukanga hauora me te whakatinanatanga o te whakamātautau X-ray.