Apo zvinetso zveChinese-zvakagadzirwa masikati machena zvakaparidzirwa , kune vimba veimba vakawanda zvakashungurudza mubvunzo mukuru: Chii chandinochera chakagadzirwa? Uye zvakadini nekabatanidzwa yakagadzirwa iyo inoshandiswa kugadzira misodzi pakati pewa drywall slabs?
Dombo uye Pepa Rekushandisa
Pashure pemakore ekugadzira wizardry nekugadzirwa kwemiti, zvinonakidza kuziva kuti masvingo edu achiripo ezvigadzirwa zvezvinhu zviviri zviri nyore: dombo uye pepa.
Nepo kuswa kwemvura kuchave nezvimwe zvinowedzera, makambani akawanda anoita zvigadzirwa kubva kune:
- Gypsum : Inomirira pakati pe 70% kusvika ku90% yemashizha akaoma, gypsum yave iri nguva refu yakagadzirwa nemishonga yakaoma. Zvimwe zvisingazivikanwi se calcium sulfate, gypsum inodhura kwandiri, moto-uchapupu, uye inopa hukuru-hunoparadza nzvimbo. Moto-rated type X drywall ichava ne fiberglass yakaiswa kune gypsum. Kusiyana ne-asbestos, iyo inozivikanwa kuti inokonzera chirwere chinowanzova chinouraya chinonzi mesothelioma, gypsum guruva haisi dambudziko guru reutano.
- Cellulose : Kusvika kusvika 10% yehuwandu hwekuoma. Cellulose ndiyo pepa rinotarisana kumativi maviri ewomewall. Zvichiwedzera, kunyange zvakadaro, masikati akaomeswa ari kutarisana kwete mumapepa asi musimba rinogadzikana re fiberglass mat. Mienzaniso inosanganisira USG Sheetrock® Mold Tough uye GP's DensArmor Plus®. Muzvokwadi, kana iwe ukamboshandisa papepa inotsiva tape yakafanana neFibaTape, uri kushandisa imwechete yezvinyorwa zvinoshandiswa muhutu husina kushandiswa.
Mushure mezvinhu izvi zviviri zvezvizhinji, zvimwe zvose zviri mukutarisa:
- Crystalline Silica
- Vermiculite
- Potassium Sulfate
- Starch
- Mica
- Wax
- Boric Acid
Joint Compound Composition
Nemhaka yokuti mutsara pamwe chete , kana kuti matope, kuvhara mapepa ematepi pakati pemashizha ewomewall inoratidzika segypsum, inowanzofungidzirwa kuva gypsum.
Hazvisi.
- Calcium Carbonate : Zvimwe zvisingazivikanwi sevhu rakatestone, ichi ndicho chidimbu chikuru mumvura yakaoma.
- Talcum : Ivhu rakaoma rakasvibiswa kane rekugadzirisa kwako here? Uri kuramba uchinyora zvipingamupinyi zvekudzivirira guruva kusvika kune dzimwe nzvimbo dzeimba yako here? Zvakanaka, inopomerwa talcum. Iyi minda yakanaka kwazvo, inozivikanwa sehupfu hwemucheche, inoshandiswa mumakemikari akabatana nokuti iyo platy particles inoratidzira pasi uye inoramba kuputika. Talc ndiyo chinhu chinobatsira dope rako redu musati rakasvibira segirazi. Pakati pe5% ne15% yemakemikari akabatanidzwa yakagadzirwa netarenda.
Sulfure neStrontium Hazvibvumirwi
Sulfur yakawanikwa muChinese yakawoma, asi hapana muSwill yakagadzirwa. Strontium yakawanikwa munzvimbo dzakakwirira zvakanyanya muChinese drywall kupinda muUnited States drywall.
Acetaldehyde uye formaldehyde zvakawanikwa mune zvose zveChinese neSouth drywall. Asi muUnited States drywall, zvinhu izvi zvakanga zviri mumiganhu yakachengeteka (uye kwete muChina yakaoma).
US Brands of Drywall Zvakajeka
Sheetrock® brand wallboard, yakagadzirwa neU.S.G Corporation, ndiyo inonyanya kurudzirwa yew drywall. Kana iwe uine bhobhobhodhi kubva kuUSG, unogona kuva nechokwadi chokuti hapana "Matambudziko eChinese" anowedzera newe iwe wallboard. USG inoshuma kuti mumakore makumi mapfumbamwe emakore ekugadzira, zvigadzirwa zvaro hazvina matambudziko akafanana neakawanikwa muChinese drywall.
Kana izvozvo zvisingakukurudziri, patakataura na USG, vakatiudza kuti "USG's Sheetrock® brand wallboardboard inogadzirwa muNorth America. USG haina kumbogadzira mabhodhi eChina uye haina kumbobvira yadzorera kana kuburitswa mabhodhi akashandurwa muChina."
Muchidzidzo chekubatana kubva kuUnited Consumer Product Safety Commission uye mamwe masangano mana eU.S. federal, US-made madewall yakange isina kuwanikwa yakafanana neya Chinese drywall.