Yuav ua li cas txhawm rau txhim kho Frost tsis kam ntawm pob zeb hauv kev tsim kho huab cua txias hauv lub caij ntuj no?

Ntawm qhov kub thiab txias txias, dej tuaj yeem khov thiab cuam tshuam cov txheej txheem hydration ntawm pob zeb. Nyob rau hauv cov huab cua txias, pob zeb ua teeb tsa maj mam thiab ntawm tus nqi siab. Thiab qhov zoo ntawm cov khoom kawg tsis yog siab:
1. Irretrievably tsawg zog thiab durability vim kev cuam tshuam ntawm cov cement (nqi, kev nyab xeeb thiab kev noj qab haus huv teeb meem);
2. Vim yog kev puas tsuaj ntawm cov dej khov rau cov pob zeb, cov kab nrib pleb me me thiab cov kab nrib pleb raug tsim, uas yuav ua rau saum npoo ntawm pob zeb tev tawm hauv lub siab me me;
3. Spalling, nrog rau qhov dav spalling ntawm cov pob zeb nto thiab cov kab nrib pleb thiab nplua mesh nyob ib ncig ntawm ib qho me me.

Lub luag hauj lwm ntawm antifreeze

Antifreeze Ib yam khoom uas hardens pob zeb ntawm qhov kub tsis zoo thiab ua tiav qhov kev xav tau nyob rau hauv cov txheej txheem kho kom zoo thiab tiv thaiv cov dej noo hauv cov khoom los ntawm khov ntawm qhov kub qis. Xyuas kom muaj kev tsim kho ntawm cov pob zeb hauv qab qhov kub tsis zoo, txo qhov khov ntawm cov pob zeb sib tov. Nws tuaj yeem ua ke nrog cov dej txo tus neeg saib xyuas thiab tus neeg saib xyuas huab cua kom tsis txhob khov, thiab cov nyhuv zoo dua. Nws yog siv rau hauv ntau yam kev ua vaj tse thiab siv hauv kev tsim kho thaum lub caij txias.
Ua cov pob zeb hauv qhov kub tsis zoo ntawm 0 degree rau -15 degree li qub hydration; Txo qhov chaw khov thiab txhim kho lub zog thaum ntxov ntawm pob zeb.

Classification ntawm antifreeze

Cov khoom siv tshuaj tiv thaiv kab mob sib xyaw ua ke tau muab faib ua pawg xws li muaj zog electrolyte inorganic ntsev (chlorides, corrosion-inhibiting chlorides, non-chloride ntsev), dej-soluble organic tebchaw, ua ke ntawm cov organic tebchaw thiab inorganic ntsev, thiab cov tshuaj tiv thaiv kab mob sib xyaw. Lawv tau muab faib ua qhov chaw txias txias xws li cov pa roj carbon tsawg, diols, thiab amides, thiab surfactants uas tsim cov yeeb yaj kiab hydrophobic adsorption ntawm qhov chaw, suav nrog acidic phosphate ester amines, alkylamines, fatty acid amides, organic esters, thiab alkylsuccinimides. Hauv kev tsim kho lub caij ntuj no, lawv ua kom cov pob zeb ua kom tawv nyob rau hauv qhov kub tsis zoo thiab ncav cuag lub zog tiv thaiv Frost txaus nyob rau lub sijhawm teev tseg, muaj xws li hmoov lossis kua. Cov khoom xyaw tseem ceeb muaj xws li sodium nitrite, carbonates, calcium chloride, calcium nitrite, urea, ethylene glycol, thiab lwm yam., txo qhov chaw khov rau hauv cov pob zeb sib xyaw thiab tuaj yeem ua ke nrog cov dej txo qis thiab cov cua nkag mus rau cov txiaj ntsig zoo.

Action mechanism

Antifreeze Cheebtsam hauv cov pob zeb tuaj yeem hloov pauv cov concentration ntawm cov kua theem, txo qis qhov khov kom ntseeg tau tias cov kua muaj nyob hauv qhov kub tsis zoo, tso cai rau cov cement hydration mus ntxiv. Cov khoom siv dej txo qis txo cov dej xav tau rau kev sib xyaw ua vaj tse, yog li txo cov dej khov thiab faib cov dej khov ua kom zoo thiab sib npaug, txo qis kev ntxhov siab rau pob zeb. Cua-entraining Cheebtsam qhia me me cov pa npuas npuas kom qeeb kom khov-thaw kev nyuaj siab. Thaum ntxov-lub zog Cheebtsam ua rau thaum ntxov pob zeb muaj zog, txhim khu nws tiv thaiv kom khov-thaw puas. Nitrite-based corrosion inhibitors tiv thaiv chloride-induced corrosion ntawm steel reinforcement thaum tseem muab cov tshuaj tiv thaiv kab mob thiab cov txiaj ntsig thaum ntxov.

Cov yam ntxwv ntawm cov khoom

1. Nws yog tsim los ntawm antifreeze, thaum ntxov zog, los ntshav, dej txo thiab lwm yam khoom.
2. Tsis muaj chlorine ntsev, tsis muaj corrosion ntawm steel tuav, tuaj yeem siv dav hauv kev lag luam thiab pej xeem vaj tse, txoj kev, choj thiab dej vaj tsev nyob rau hauv lub caij ntuj no kev tsim kho.
3. Grey hmoov, yooj yim rau yaj, tsis muaj tshuaj lom, yooj yim rau siv.