Ama-Admixtures kakhonkolo

Ama-admixtures kakhonkolo ayizithako ezikhethekile ezingezwe ku-conkcrete mix ngesikhathi sokuxuba noma ukuxuba ukuguqula izakhiwo zayo noma ukuthuthukisa ukusebenza kwawo. Lezi zinhlamvu zingenza ngcono izici ezahlukahlukene zikakhonkolo, kufaka phakathi umsebenzi, amandla, ukuqina, ukusetha isikhathi, kanye nokumelana namakhemikhali noma izimo zemvelo. Nazi ezinye izinhlobo ezijwayelekile ze-admixtures kakhonkolo:

1. Ukuncipha kwamanzi okunciphisa amanzi:

• Ukuncipha kwamanzi okunciphise amanzi, eyaziwa nangokuthi amapulasitiki noma ama-superplastimizer, asetshenziselwa ukunciphisa inani lamanzi adingekayo ekuhlanganiseni ukhonkolo ngenkathi kusebenza.
• Bathuthukisa ukuhamba nokusebenza kokhonkolo, okwenza kube lula ukubeka futhi baqede.
• Ama-Superplastizers angahlukaniswa njengobubanzi obuphezulu noma phakathi kwamahlandla asuselwa kumandla abo okunciphisa okuqukethwe kwamanzi futhi akhuphule ukuncipha.

2. Setha ukubuyisa ama-admixtures:

• Setha i-Retarding Omustard admixtures asetshenziselwa ukubambezela isikhathi sokubeka ukhonkolo, okuvumela ukubekwa okwengeziwe nokuqeda izikhathi.
• Zinenzuzo ezimweni zezulu ezishisayo noma lapho uhambisa ukhonkolo amabanga amade.
• Lawa ma-admixtures nawo angasiza ukuvikela amalunga okubandayo futhi athuthukise ubuhlobo phakathi kokuthululwa kokhonkolo okulandelanayo.

3. Ukusheshisa ama-admixtures:

• Ukusheshisa ama-advixtures angezwa kukhonkolo ukusheshisa ukusetha nokuthuthukiswa kwamandla kusenesikhathi.
• Zilusizo ezimeni zezulu ezibandayo noma lapho kudingeka amashejuli asheshayo wokwakha.
• I-calcium chloride iyinhlangano evamile yokusheshisa, yize ukusetshenziswa kwayo kungaholela ekunciphiseni kwensimbi eqinisiwe kanye ne-efferescence.

4. Ama-admixtures afaka umoya:

• I-Admixtures efaka umoya isetshenziselwa ukwethula ama-bubble e-microscopic ku-conkcrete mix.
• Lawa ma-bubble amoya athuthukisa ukuqina kokhonkolo ngokunikeza ukumelana nemijikelezo ye-freeze-thaw, ukunciphisa ukopha nokuhlukaniswa, kanye nokwenza ngcono ukukwenziwa komzimba.
• Ama-admixture afaka umoya asetshenziswa kakhulu ezimweni sezulu ezibandayo kanye nokhonkolo ovezwa usawoti we-de-icing.

I-5. Ukubuyela emuva kanye nokunciphisa amanzi okunciphise:

• Lawa ma-admixturetures ahlanganisa izakhiwo zokubuyisa kabusha kanye nokunciphisa amanzi okunciphisa amanzi.
• Babambezela isikhathi sokubekwa kokhonkolo ngenkathi kuthuthukiswa ngasikhathi sinye ukusebenziseka futhi kunciphisa okuqukethwe kwamanzi.
• Ukubuyela emuva kanye nokunciphisa amanzi ama-admixtures kuvame ukusetshenziswa ezimweni zezulu ezishisayo ukuvikela ukulungiswa okusheshayo nokulahleka kwe-slump.

I-6.

• I-Admixtureturetures evinjelwe i-cororion-inhibititing ingeziwe kukhonkolo ukuvikela ukuqiniswa kwensimbi okufakwe ku-corrolusion.
• Bakha ungqimba oluvikelayo ebusweni bokuqiniswa, ukuvimbela ukungena kwama-chlorides namanye ama-ejenti awonakalisayo.
• Lezi zinhlamvu zilusizo ikakhulukazi ezindaweni zasolwandle noma izakhiwo ezivezwa usawoti we-de-icing.

7. Shrinkage-ukunciphisa ama-admixtures:

• I-Shrinkage-encishise ama-admixtures asetshenziselwa ukunciphisa ukomisa i-shrinkage kanye nokuqhekeka ngokhonkolo.
• Basebenza ngokunciphisa ukungezwani kwamanzi kwamanzi amakhulu, okuvumela ukomiswa okufana nokunciphiswa kanye nokunciphisa i-shrinkage.
• Lezi zinhlamvu zinenzuzo ekubekeni okukhulu kokhonkolo, izinto eziqonde ngqo kokhonkolo, kanye nokuxubana kokhonkolo okuphezulu.

Ama-Admixtures adlala indima ebalulekile ekuthuthukiseni ukusebenza nokuqina kukakhonkolo kuzicelo ezahlukahlukene. Ngokukhetha ngokucophelela futhi kufaka phakathi i-admixtures efanelekile ku-concrete mix, onjiniyela kanye nosonkontileka bangathola izakhiwo ezifunwayo njengokusebenza okuthuthukile okungcono, amandla, ukuqina, kanye nokumelana nezimo ezingezinhle zemvelo. Kubalulekile ukulandela izincomo zomkhiqizi kanye nemihlahlandlela yemithamo lapho usebenzisa ama-admixture ukuqinisekisa ukusebenza kahle kanye nokuhambisana nokuhlanganiswa kokhonkolo.