1. Muhimman Ayyuka da Manufofi Masu Amfani a Fasahar Zamani Kankare
1.1 Aiki da Tsarin Ma'aikatan Kumfa na Kankare
(Kankare mai kumfa)
Kankankankan da aka yi amfani da lathering jami'o'i ƙwararrun sinadarai ne da aka ƙirƙira don gabatarwa da gangan da kuma kula da yawan kumfa na iska a cikin sabon matrix ɗin siminti..
Wadannan wakilai suna aiki ta hanyar rage girman yanayin ruwa mai haɗuwa, yana sa ya yiwu ga ci gaban tarar, ko'ina tarwatsewar iska a ko'ina cikin tashin hankali ko haɗuwa.
Manufar farko ita ce ƙirƙirar kankare ta salula ko kankare mai nauyi, inda iskar kumfa mai kumfa tana rage girman ƙaƙƙarfan samfurin gabaɗaya yayin da ake samun isasshen kwanciyar hankali na gine-gine..
Abubuwan lathering gabaɗaya sun dogara ne akan abubuwan da ake samu na furotin (irin su keratin hydrolyzed daga kayan dabba) ko roba surfactants (wanda ya ƙunshi alkyl sulfonates, ethoxylated alcohols, ko abubuwan da aka samo asali na fatty acid), kowane yana ba da tsaro na kumfa na musamman da fasalin tsarin kumfa.
Kumfa da aka ƙirƙira dole ne ya tsaya tsayin daka don jure haɗuwa, yin famfo, da matakan saitin farko ba tare da matsananciyar haɗin kai ko rugujewa ba, tabbatar da tsarin wayar hannu iri ɗaya a ƙarshen samfurin.
Wannan porosity na injiniya yana haɓaka rufin thermal, yana rage matattun tan, kuma yana haɓaka juriya na wuta, yin kumfa mai kumfa manufa don aikace-aikace kamar insulating bene screeds, gibin hakori, da faranti masu nauyi da aka riga aka yi.
1.2 Manufar da Tsarin Kankare Defoamers
Da bambanci, kankare defoamers (kuma aka sani da anti-kumfa wakilan) an tsara su don kawar da ko rage iskan da ba a so a ciki a cikin mahaɗin kankare.
Duk cikin hadawa, sufuri, da matsayi, iska na iya ƙarewa ba da gangan ba a makale a cikin man siminti saboda damuwa, musamman ma a cikin ruwa mai yawa ko siminti mai haɗa kai (SCC) tsarin tare da babban superplasticizer abu.
Waɗannan kumfa masu sha'awar iska yawanci ba daidai ba ne a girma, mugun warwatse, kuma yana da lahani ga kayan aikin injiniya da kayan kwalliya na siminti mai ƙarfi.
Defoamers suna aiki ta hanyar lalata kumfa na iska a cikin mahallin iska-ruwa, tallan haɗin gwiwa da yaga ƴan siririyar fina-finan ruwa da ke kewaye da kumfa.
( Kankare mai kumfa)
Yawanci sun ƙunshi mai da ba za a iya narkewa ba (kamar ma'adinai ko mai), polymers na tushen siloxane (misali, polydimethylsiloxane), ko m barbashi kamar hydrophobic silica, wanda ke mamaye fim ɗin kumfa kuma yana hanzarta magudanar ruwa da rushewa.
Ta hanyar rage abun cikin iska– gabaɗaya daga digiri na matsala 5% zuwa 1– 2%– defoamers inganta matsa lamba tauri, inganta shafi shafi, da haɓaka tauri ta hanyar rage rashin ƙarfi da yuwuwar raunin daskarewa-narke.
2. Haɗin Sinadari da Halayen Fuskoki
2.1 Tsarin Halitta na Ƙwararrun Ƙwararrun Kumfa
Ingantacciyar ma'aikacin simintin gyaran fuska yana da alaƙa sosai da tsarin sa na ƙwayoyin cuta da aikin sa na fuska..
Wakilan kumfa na tushen furotin sun dogara da dogon sarkar polypeptides waɗanda ke buɗewa a wurin mai amfani da ruwan iska., ƙirƙirar fina-finai na viscoelastic waɗanda ke tsaye har zuwa tsagewa da ba da ƙarfi na injiniya zuwa bangon kumfa.
Wadannan duk-na halitta surfactants suna haifar da manya-manyan girma duk da haka tsayayyen kumfa tare da juriya mai kyau, sanya su manufa don simintin siminti mara nauyi.
Abubuwan kumfa na roba, a bangare daban-daban, magance mafi daidaito kuma ba su da hankali sosai ga bambance-bambancen sinadarai na ruwa ko matakin zafin jiki.
Suna yin karami, fiye da daidaiton kumfa sakamakon raguwar tashin hankalin da suke da shi da kuma saurin adsorption kinetics, haifar da mafi kyawun tsarin pore da haɓaka aikin thermal.
Mahimmancin maida hankali mielle (CMC) da kuma hydrophilic-lipophilic balance (HLB) na surfactant gano ta yi a cikin kumfa tsara da kwanciyar hankali a karkashin karfi da siminti alkalinity.
2.2 Tsarin Molecular na Defoamers
Defoamers suna aiki ta hanyar na'ura daban, dogara ga rashin kuskure da rikice-rikice tsakanin fuskoki.
Silicone-tushen defoamers, musamman polydimethylsiloxane (Farashin PDMS), suna da tasiri sosai saboda raguwar yanayin tashin hankali na musamman (~ 20– 25 mN/m), wanda ke ba su damar bazuwa cikin sauri a cikin sararin saman kumfa.
Lokacin da ɗigo mai cire foamer ya tuntuɓi fim ɗin kumfa, yana tasowa a “gada” tsakanin bangarorin biyu na fim din, haifar da dewetting da rupture.
Masu defoamers na tushen mai suna aiki ta irin wannan hanya duk da haka ba su da aminci a cikin gaurayawar ruwa sosai inda saurin yaduwa zai iya lalata aikin su..
Matakan defoamers ciki har da barbashi na hydrophobic suna haɓaka aiki ta hanyar samar da wuraren ɓoye don haɗakar kumfa..
Sabanin wakilan wanki, defoamers ya kamata su kasance masu narkewa a matsakaici don ci gaba da aiki a wurin mai amfani ba tare da an haɗa su cikin micelles ba ko narkar da su cikin matakin taro..
3. Tasiri kan Sabo da Taurare Siffar Kankare
3.1 Tasirin Wakilan Kumfa akan Ayyukan Kankare
Gabatarwar da gangan na iska ta hanyar wakilai masu kumfa yana canza yanayin jiki na kankare, matsar da shi daga kauri mai kauri zuwa wani permeable, samfurin mai nauyi.
Ana iya saukar da kauri daga na yau da kullun 2400 kg/m biyar zuwa kasa da 400– 800 kg/m³, dangane da ƙarar kumfa da kwanciyar hankali.
Wannan ragewa yana haɗa kai tsaye tare da ƙananan halayen thermal, yin kumfa mai kumfa mai inganci kayan kariya tare da ƙimar U-ƙirar gina ambulaf.
Duk da haka, Ƙarfafa porosity kuma yana haifar da raguwa a cikin taurin matsawa, yana buƙatar kulawa da kulawa a hankali kuma sau da yawa haɗa ƙarin kayan siminti (SCMs) kamar ƙuda ash ko silica fume don inganta pore bango ƙarfi.
Yawan aiki yana da yawa saboda sakamakon mai mai na kumfa, duk da haka rarrabuwa na iya faruwa idan tsaron kumfa bai isa ba.
3.2 Tasirin Defoamers akan Ayyukan Kankare
Defoamers suna haɓaka ingancin daidaitattun daidaitattun siminti da babban aiki ta hanyar kawar da matsalolin da ke haifar da iska.
Matsanancin sararin samaniya yana aiki azaman damuwa da damuwa da damuwa kuma yana rage amintaccen ɓangaren giciye mai ɗaukar kaya, haifar da ƙananan matsawa da ƙarfin hali.
Ta hanyar rage girman waɗannan wurare, defoamers na iya ƙara matsawa tauri da 10– 20%, musamman a cikin babban ƙarfi gauraye inda kowane juzu'i kashi na iska al'amura.
Hakanan suna haɓaka ingancin saman saman ta hanyar guje wa rami, ramukan kwari, da cin zuma, wanda ke da mahimmanci a cikin kankare na gine-gine da aikace-aikace masu fuskantar tsari.
A cikin sifofi marasa ƙarfi kamar kwantena na ruwa ko ginshiƙai, saukar da porosity yana ƙarfafa juriya ga samun chloride da carbonation, fadada tsawon rayuwa.
4. Matsalolin Aikace-aikacen da Abubuwan Da'a Don La'akari
4.1 Abubuwan Amfani na yau da kullun don Wakilan Kumfa
Abubuwan frothing suna da mahimmanci wajen samar da kankare ta salula da ake amfani da su a cikin yadudduka masu zafi, rufin rufin, da tubalan masu nauyi masu nauyi.
Hakanan ana amfani da su a aikace-aikacen fasaha na geotechnical kamar jujjuyawar rami da daidaita tazara., inda ƙananan yawa ke dakatar da cika datti na ƙasa.
A cikin saitunan da aka ƙima wuta, da garkuwa zama ko kasuwanci Properties na kumfa kankare samar m wuta kariya ga gine-gine sassa.
Nasarar waɗannan aikace-aikacen ya dogara ne akan takamaiman na'urorin samar da kumfa, amintattun lathering wakilan, da magungunan haɗakarwa da suka dace don yin takamaiman yanayin yanayin iska.
4.2 Misalan Amfani na yau da kullun don masu Defoamers
Ana yawan amfani da na'urar cire foam ɗin a cikin siminti mai haɗa kai (SCC), inda babban yawan ruwa da superplasticizer abun ciki ke haɓaka haɗarin kama iska.
Hakanan suna da mahimmanci a cikin precast da simintin gine-gine, inda ƙarewar yanki yana da matukar mahimmanci, kuma a karkashin ruwa kankare sakawa, inda iskar da aka makale na iya yin illa ga haɗin gwiwa da juriya.
Yawancin lokaci ana ƙara masu lalata a cikin ƙananan allurai (0.01– 0.1% da nauyin siminti) kuma dole ne ya dace da sauran admixtures, musamman polycarboxylate ethers (PCEs), don gujewa mu'amala mara kyau.
Don kammalawa, kankare frothing wakilan da defoamers wakiltar 2 adawa duk da haka kamar mahimman dabarun sarrafa iska a cikin tsarin siminti.
Yayin da ma'aikatan kumfa ke gabatar da iska da gangan don cimma nauyi mai nauyi da kuma kare gidaje, defoamers kawar da maras so iska don bunkasa ƙarfin hali da kuma surface yankin high quality.
Gane nau'ikan sunadarai daban-daban, na'urori, kuma sakamakon yana ba da damar injiniyoyi da masana'antun su haɓaka aikin kankare don gine-gine iri-iri, m, da kyawawan bukatun.
Mai bayarwa
Cabr-Concrete shine mai samar da Kankare Admixture tare da kari 12 shekaru na gwaninta a cikin nano-ginin makamashi kiyayewa da nanotechnology ci gaban. Yana karɓar biyan kuɗi ta Katin Kiredit, T/T, West Union da Paypal. TRUNNANO zai jigilar kaya ga abokan ciniki a ketare ta hanyar FedEx, Farashin DHL, ta iska, ko ta teku. Idan kana neman babban ingancin Concrete Admixture, da fatan za a ji daɗin tuntuɓar mu kuma ku aiko da tambaya.
Tags: kankare mai kumfa,kankare farashin wakili mai kumfa,wakili mai kumfa don kankare
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