Babban abubuwan da ke haifar da rawayar saman putty mai jure ruwa Bayan binciken kayan aiki, gwaje-gwaje da yawa da kuma aikin injiniya, marubucin ya yi imanin cewa manyan abubuwan da ke haifar da rawayar saman putty mai jure ruwa sune kamar haka:
Dalili na 1. Calcium hydroxide (foda mai sinadarin calcium ash) yana haifar da rawayar calcium hydroxide, dabarar kwayoyin halitta Ca (OH) 2, nauyin kwayoyin halitta 74, matakin narkewa 5220, ƙimar pH ≥ 12, alkaline mai ƙarfi, farin foda mai laushi, ɗan narkewa a cikin ruwa, mai narkewa a cikin acid, glycerin, sukari, ammonium chloride, mai narkewa a cikin acid don fitar da zafi mai yawa, yawan dangi shine 2.24, ruwan da yake da tsabta shine ruwa mara launi, mara ƙanshi, a hankali yana sha, calcium oxide ya zama calcium carbonate. Calcium hydroxide yana da ƙarfi matsakaici alkaline, alkaline da lalatawarsa sun fi rauni fiye da sodium hydroxide, calcium hydroxide da ruwan da yake da shi suna lalata fata, tufafi, da sauransu, amma ba sa da guba, kuma bai kamata ya kasance yana hulɗa kai tsaye da fata na dogon lokaci ba.
Calcium hydroxide wani abu ne mai aiki a cikin putty mai jure ruwa don samar da fim mai tauri tare da babban sinadarin calcium carbonate da foda mai sheƙi mai yawa. Saboda ƙarfin alkaline da yawan sinadarin alkali, wani ɓangare na ruwan da ke cikin putty zai shanye ta hanyar tushe na bango yayin gini. Ana shanye ƙasan turmi na siminti mai ƙarfi, ko ƙasan yashi-lemun tsami (lemun tsami, yashi, ƙaramin siminti), yayin da layin putty ke bushewa a hankali kuma ruwan ya yi zafi, abubuwan alkaline a cikin turmi da putty na ƙasa da wasu daga cikinsu ba su da ƙarfi bayan hydrolysis. Abubuwa a cikin putty (kamar ƙarfe mai ferrous, ƙarfe mai ferrous, da sauransu) za su fito ta cikin ƙananan ramuka na putty, kuma amsawar sinadarai za ta faru bayan haɗuwa da iska, wanda ke sa saman putty ya zama rawaya.
Dalili na 2. Iskar gas mai saurin canzawa ta halitta. Kamar carbon monoxide (CO), sulfur dioxide (SO2), benzene, toluene, xylene, formaldehyde, pyrotechnics, da sauransu. A wasu lokutan injiniyanci, akwai yanayi inda saman putty ya zama rawaya saboda amfani da fenti da wuta don kiyaye ɗumi a cikin ɗakin da aka goge putty mai jure ruwa, ko ma ƙona turare a cikin ɗakin, kuma mutane da yawa suna shan taba a lokaci guda.
Dalili na 3. Tasirin yanayi da abubuwan da suka shafi muhalli. A yankin arewa, a lokacin musayar yanayi, saman putty yawanci yana canza launin rawaya daga Nuwamba zuwa Mayu na shekara mai zuwa, amma wannan wani abu ne da ba a saba gani ba.
Dalili na 4. Yanayin iska da bushewa ba su da kyau. Bango yana da danshi. Bayan goge putty mai jure ruwa, idan Layer ɗin putty bai bushe gaba ɗaya ba, rufe ƙofofi da tagogi na dogon lokaci zai sa saman putty ya zama rawaya cikin sauƙi.
Dalili na 5. Matsalolin tushen ciyawa. Ƙasan tsohon bango gabaɗaya bango ne mai launin toka-toka (lemun tsami, yashi, ƙaramin siminti, wasu kuma an haɗa su da gypsum). Ya Ubangiji, amma har yanzu akwai wurare da yawa inda aka yi wa bangon fenti da lemun tsami da siminti. Yawancin kayan bangon alkaline ne. Bayan putty ya taɓa bangon, wasu ruwa za su sha ta bangon. Bayan hydrolysis da oxidation, wasu abubuwa, kamar alkali da ƙarfe, za su fito ta ƙananan ramukan bangon. Wani abu mai guba yana faruwa, wanda ke sa saman putty ya zama rawaya.
Dalili na 6. Wasu dalilai. Baya ga abubuwan da ke sama, akwai wasu abubuwa da za a yi la'akari da su, waɗanda za a yi ƙarin bincike a kansu.
Magani don hana putty mai jure ruwa komawa rawaya:
Hanya ta 1. Yi amfani da wani abu mai rufewa a baya don rufewa a baya.
Hanya ta 2. Don ƙawata bango, an goge putty na yau da kullun mai ƙarancin ƙarfi wanda ba ya jure ruwa kuma mai sauƙin niƙawa a baya. Kafin amfani da putty mai juriya ga ruwa, ya kamata a fara yin maganin fasaha. Hanyar ita ce: da farko a fesa ruwa don jika saman bangon, sannan a yi amfani da spatula don goge shi. Cire duk tsohon putty a fenti (har sai ƙasan tauri) a tsaftace shi. Bayan bangon ya bushe gaba ɗaya, a sake tsaftace shi kuma a shafa mai goyon baya don rufe maganin baya, sannan a goge putty mai juriya ga ruwa. rawaya.
Hanya ta 3. Guji iskar gas mai canzawa da wasan wuta. A lokacin aikin gini, musamman lokacin da putty bai bushe gaba ɗaya ba bayan an gina shi, kada a sha taba ko kunna wuta a cikin gida don dumamawa, kuma kada a yi amfani da sinadarai masu canzawa kamar fenti da siraran sa a cikin gida cikin watanni uku.
Hanya ta 4. A ajiye wurin a wuri mai iska da bushewa. Kafin putty mai jure ruwa ya bushe gaba ɗaya, kada a rufe ƙofofi da tagogi sosai, amma a buɗe tagogi don samun iska, ta yadda putty ɗin zai iya bushewa da wuri-wuri.
Hanya ta 5. Ana iya ƙara adadin 462 da aka gyara na ultramarine a cikin putty mai jure ruwa. Hanya ta musamman: Dangane da rabon ultramarine mai gyara 462: foda mai putty = 0.1: 1000, da farko a ƙara ultramarine a cikin wani adadin ruwa, a juya don narkewa sannan a tace, a ƙara ruwan ultramarine da ruwa a cikin akwati, sannan a danna jimlar ruwan: foda mai putty = rabon nauyi 0.5: 1, a sanya foda mai putty a cikin akwati, a juya shi daidai da mahaɗi don samar da madara mai tsami, sannan a yi amfani da shi. Gwajin ya nuna cewa ƙara wani adadin shuɗin ultramarine na iya hana saman putty ya zama rawaya zuwa wani mataki.
Hanya ta 6. Ga putty da ya yi launin rawaya, ana buƙatar maganin fasaha. Hanyar magani gabaɗaya ita ce: da farko a shafa firikwensin a saman putty, sannan a goge a shafa fenti mai jure ruwa ko goga a bango mai ƙarfi.
Taƙaita abubuwan da ke sama:
Rawaya a saman fenti mai jure ruwa da kuma fenti mai kwaikwayon fenti ya ƙunshi fannoni da yawa kamar albarkatun ƙasa, yanayin muhalli, yanayin yanayi, tushen bango, fasahar gini, da sauransu. Wannan matsala ce mai sarkakiya, kuma ana buƙatar ƙarin bincike da tattaunawa.
Lokacin Saƙo: Afrilu-28-2024