ƙwararrun mafita akan abubuwan da suka haɗa da kankare, Wakilin Kumfa, Superplasticizer, CLC Blocks Additives, da injin kumfa.
(Yaya ake hana kankare daga zubar jini?)
Menene zubar jini na kankare?
Lamarin da ke kan nutsewa da ruwa mai zurfi a cikin tafiyar da sufuri, girgizawa, da kuma fitar da siminti ana kiransa zubar jini na kankare.
Zubar da jini wani muhimmin al'amari ne na iya aiki na sabo da kankare.
Gabaɗaya, maƙasudin da ke bayyana halayen simintin ruwa na siminti su ne adadin ruwan da aka ɓoye (wato matsakaicin adadin ruwan da aka ɓoye kowane yanki na siminti) da kuma adadin fitar ruwa (wato, gwargwadon adadin adadin ruwa). na ruwa da aka ɓoye zuwa abun cikin ruwa na cakuda kankare).
Bisa ka'idar zubar da jini na kankare da tsarin abubuwa daban-daban da ke shafar zubar jini na kankare, manyan hanyoyin magance zubar da jini su ne kamar haka.
1. Mix da rabo na kankare.
A kara yawan siminti yadda ya kamata, a inganta yashi na siminti, sannan a sanya ruwan simintin ya zubar da iska yadda ya kamata domin bai hadu da wasu kadarori ba.
A ƙarƙashin tsarin tabbatar da aikin ginin, rage yawan ruwan naúrar gwargwadon yiwuwa.
2. Kayan danye.
An zaɓi kayan siminti masu kyau da ingantattun ma'aikatan haɓaka iska.
3. Superplasticizer.
An zaɓi superplasticizer tare da ƙananan zubar jini da yawan ruwa na kankare.
A ce an daidaita rabon cakuda lokacin da daidaitattun buƙatun da amfani suka cika. A wannan yanayin, ana zaɓar adadin mai rage ruwa tare da ƙimar rage ruwan da ya dace don guje wa zubar da jini wanda ya haifar da yawan raguwar ruwa.
Lokacin da ake hadawa, dole ne a ƙara ƙananan kayan kamar su polyether rheological agents, ruwa mai hana ruwa, masu hana laka, da masu rage manne don sarrafa zubar da jini na siminti, inganta aikin kankare, ƙara haɗin kai, ruwa, da riƙe ruwa na kankare. da inganta karko na kankare.
4. Gina.
Tsananin sarrafa lokacin girgiza na kankare don guje wa overvibration.
Bugu da ƙari, don sarrafa aikin simintin simintin gyare-gyare, an zaɓi wuraren da ya dace don yin amfani da kulawa don rage zubar da jini na kankare.
A ce za a sarrafa iyakar abin da ke cikin iska. A wannan yanayin, ana iya zaɓar wurin sarrafawa a ƙofar ɗakin ajiya don rage tasirin asarar abun cikin iska akan ɓoyewar ruwa a cikin sufuri na kankare.
Lokacin da zub da jini ya riga ya bayyana a saman ɗakin ajiya, dole ne a kawar da shi cikin lokaci. Hanyar da ta fi dacewa ita ce shayar da ruwa ta hanyar motsa jiki, zana ruwa da hannu daga farfajiyar ɗakin ajiya, ko shayar da ruwa tare da abubuwan da ke sha sosai kamar soso, musamman idan an gama simintin; zubar da jini ya kamata a nutse cikin lokaci don sauƙaƙe saman simintin don tabbatar da ingancin simintin.
An haramta shi sosai don buɗe rami a cikin tsari, wanda ke haifar da asarar kayan siminti kuma yana shafar ingancin siminti.
Musamman a cikin siminti na siminti, ya kamata mu sha ruwan zub da jini cikin lokaci don sauƙaƙa da siminti.
5. Inganta zubar da jini na kankare ta hanyar siminti.
Concrete admixture (superplasticizer) gabaɗaya polymer ne na halitta.
Nauyin kwayoyin halittar polymers ko tsayin sarkar yana shafar kaddarorin su kai tsaye.
Idan nauyin kwayoyin superplasticizer ya fi girma kuma sassan kwayoyin sun fi tsayi, za a rage zubar da ruwa na kankare, amma a lokaci guda, rage yawan ruwa na superplasticizer ya ragu; idan nauyin kwayoyin ya kasance karami kuma sarkar kwayar halitta ta kasance gajere, za a kara yawan adadin simintin rage ruwa a lokaci guda.
Wasu superplasticizers suna da rassa sarƙoƙi akan babban sarkar kwayoyin halitta. Komai idan sassan sassan sassan manyan sarƙoƙi sun fi tsayi, za a rage yawan raguwar ruwa na kankare daidai. Idan babban sarkar ya kasance gajere kuma sarƙoƙi masu tsayi suna da tsayi, za a rage ɓoyewar ruwa, kuma adadin rage ruwa ba zai yi tasiri sosai ba.
Gabaɗaya, superplasticizer ba ya ƙunshi kwayoyin halitta masu nauyin kwayoyin halitta guda ɗaya amma cakuda kwayoyin halitta masu nauyin kwayoyin daban-daban.
A cikin yanayin rage fitar da ruwa da kuma tabbatar da raguwar ruwa, ya zama dole don inganta girman kwayoyin halitta na superplasticizer don cimma mafi kyawun haɗin kai tsakanin ƙananan ƙwayoyin cuta da macromolecular abubuwa.
Lokacin da ake hadawa, dole ne a ƙara ƙananan kayan kamar su polyether rheological agents, ruwa mai hana ruwa, masu hana laka, da masu rage manne don sarrafa zubar da jini na siminti, inganta aikin kankare, ƙara haɗin kai, ruwa, da riƙe ruwa na kankare. da inganta karko na kankare.
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(Yaya ake hana kankare daga zubar jini?)