Busassun turmi yana nufin wani abu mai ƙyalƙyali ko foda da aka samar ta hanyar cakuɗe tarukan jiki, kayan siminti mara ƙarfi, da ƙari waɗanda aka bushe kuma an tantance su daidai gwargwado.Menene additives da aka saba amfani da su don busassun turmi?Mai zuwa shine gabatarwa ga babban abun ciki na busassun busassun busassun turmi wanda Jianshe Net ya kawo don tunani.
Dry foda turmi gabaɗaya yana amfani da siminti Portland azaman siminti, kuma adadin siminti gabaɗaya ya kai kashi 20% zuwa 40% na busasshiyar turmi;Yawancin tarawa masu kyau sune yashi ma'adini kuma suna buƙatar babban adadin maganin da aka rigaya kamar bushewa da nunawa don tabbatar da cewa girman su da ingancin su sun dace da bukatun tsarin;Wani lokaci kuma ana ƙara ash, foda, da sauransu a matsayin admixtures;Admixtures ana amfani da su gabaɗaya a cikin ƙananan kuɗi, kama daga 1% zuwa 3%, amma suna da tasiri mai mahimmanci.Ana zaɓar su sau da yawa bisa ga buƙatun ƙirar samfurin don haɓaka iya aiki, shimfidawa, ƙarfi, raguwa, da juriya na sanyi na turmi.
Wadanne nau'ikan busassun busassun turmi ne da aka saba amfani da su?
EVA copolymerzai iya inganta abubuwa masu zuwa a cikin busassun busassun turmi:
① Riƙewar ruwa da aiki na turmi mai gauraye sabo;
② Ayyukan haɗin kai na daban-daban tushe yadudduka;
③ Sassauci da nakasar aikin turmi;
④ Ƙarfin lankwasawa da haɗin kai;
⑤ Sanya juriya;
⑥ Juriya;
⑦ Ƙarfafawa (rashin ƙarfi).
Aikace-aikacen foda na latex wanda za'a iya tarwatsawa a cikin bakin bakin ciki plastering turmi, yumbu mai ɗaure, tsarin bangon bango na waje, da kayan shimfidar ƙasan kai sun nuna sakamako mai kyau.
Wakilin riƙe ruwa da kauri
Ruwa retaining thickeners yafi sun hada da cellulose ethers, sitaci ethers, da dai sauransu The cellulose ether amfani a bushe foda turmi ne yafi methyl hydroxyethyl cellulose ether (MHEC) da kumahydroxypropyl methyl cellulose ether(HPMC).
Ainihin aikin wakilai na rage ruwa shine rage buƙatun ruwa na turmi, don haka inganta ƙarfin matsawa.Babban abubuwan rage ruwa da ake amfani da su a busassun turmi foda sun haɗa da casein, naphthalene tushen rage rage ruwa, melamine formaldehyde condensate, da polycarboxylic acid.Casein babban ƙwararren filastik ne tare da kyakkyawan aiki, musamman don turmi mai bakin ciki, amma saboda samfurin halitta ne, ingancinsa da farashinsa galibi suna canzawa.Naphthalene jerin abubuwan rage ruwa da aka saba amfani da su β- Naphthalenesulfonic acid formaldehyde condensate.
Coagulant
Akwai nau'ikan coagulant iri biyu: accelerator da retarder.Accelerators ana amfani da su hanzarta saitin da taurin turmi, Calcium formate da Lithium carbonate ana amfani da ko'ina, kuma Aluminate da Sodium metasilicate kuma za a iya amfani da accelerators.Ana amfani da retarders don rage saiti da taurin turmi.Tartaric acid, citric acid da gishiri da Gluconic acid an yi amfani da su cikin nasara.
Mai hana ruwa wakili
Mai hana ruwa ya ƙunshi: Iron(III) chloride, Organic silane fili, fatty acid gishiri, polypropylene fiber, Styrene-butadiene da sauran macromolecular mahadi.Iron (III) chloride mai hana ruwa wakili yana da kyakkyawan tasirin hana ruwa, amma yana da sauƙi don haifar da lalatawar ƙarfafawa da sassan da aka haɗa da ƙarfe.Gishirin calcium maras narkewa da aka haifar ta hanyar amsawar salts fatty acid tare da ions calcium a cikin ajiyar lokaci na siminti a kan bangon capillaries, suna taka rawa wajen toshe pores da kuma sanya bangon bangon capillary ya zama saman hydrophobic, don haka suna taka rawa mai hana ruwa.Farashin Unit ɗin waɗannan samfuran yana da ɗan ƙaramin ƙarfi, amma yana ɗaukar lokaci mai tsawo kafin a haɗa turmi daidai da ruwa.
The zaruruwa amfani da busassun foda turmi sun hada da alkali resistant gilashin fiber, polyethylene fiber (polypropylene fiber), high-ƙarfi da kuma high modules polyvinyl barasa fiber (polyvinyl barasa fiber), itace fiber, da dai sauransu An fi amfani da su ne high-ƙarfi da kuma high-ƙarfi high modulus polyvinyl barasa zaruruwa da polypropylene zaruruwa.Ƙarfi mai ƙarfi da babban modules polyvinyl barasa zaruruwan suna da mafi kyawun aiki da ƙarancin farashi fiye da filayen polypropylene da aka shigo da su.Zaɓuɓɓuka suna rarraba ba bisa ka'ida ba kuma daidai a cikin matrix siminti, kuma suna da alaƙa da ciminti don hana haɓakawa da haɓaka microcracks, yin turmi matrix mai yawa, don haka suna da aikin hana ruwa da ingantaccen tasiri da juriya.Tsawon shine 3-19 mm.
Lokacin aikawa: Yuli-14-2023