Konkire admixture ndi mankhwala mankhwala amene anawonjezera mu ndondomeko kusakaniza konkire, mlandu zosakwana 5% ya simenti, ndipo akhoza kwambiri kusintha ntchito konkire.Makhalidwe a konkriti admixtures ndi mitundu yambiri ndi mlingo waung'ono, womwe umakhala ndi chikoka chachikulu pa ntchito ya konkire, ndipo uli ndi makhalidwe a ndalama zochepa, zotsatira zachangu, komanso phindu lalikulu laukadaulo ndi zachuma.Ndi kupita patsogolo kosalekeza kwa sayansi ndi luso lamakono, zosakaniza zakhala zikugwiritsidwa ntchito mochulukira, ndipo zosakaniza zakhala gawo lachisanu lofunika la konkire kuwonjezera pa zigawo zinayi zofunika.

Zosakaniza zimatha kupititsa patsogolo ntchito ya anti-carbonation ya konkire pamlingo wina.Pali mgwirizano wina wa mzere pakati pa kuya kwa carbonation ndi porosity ya konkire.Admixtures ali ndi chikoka chachikulu pa chisanu kukana konkire.Lili ndi ntchito yabwino, koma kuwonjezera limodzi kwa wothandizila oyambirira kulibe mphamvu pa chisanu kukana konkire.

Kutengera ntchito ya konkriti admixtures, imatha kugawidwa motere:
1) Chemical admixtures kusintha rheological katundu wa konkire zosakaniza.Kuphatikizira othandizira osiyanasiyana ochepetsera madzi, ma air etraining agents ndi ma pumping agents, etc.
(2) Chemical admixtures kuti kusintha koika nthawi ndi kuumitsa katundu konkire.Kuphatikizira ma retarders, othandizira mphamvu zoyambirira ndi ma accelerator.
(3) Chemical admixtures kupititsa patsogolo kulimba kwa konkire.Kuphatikizapo air-entraining agent, antifreeze agent, waterproof agent ndi dzimbiri inhibitor, etc.
(4) Chemical admixtures kuti apititse patsogolo zinthu zina za konkire.Kuphatikizira ma air-entraining agents, zowonjezera zowonjezera, zopaka utoto, ndi zina.

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