Tsiku Lotumiza:10,Apr,2023

(1) Chikoka pa kusakaniza konkire

Wothandizira mphamvu wamba amatha kufupikitsa nthawi yoyika konkire, koma ngati zomwe zili mu tricalcium aluminate mu simenti ndi zotsika kapena zotsika kuposa gypsum, sulphate imachedwetsa nthawi yoyika simenti. Kawirikawiri, mpweya wa konkire sudzawonjezedwa ndi kusakaniza koyambirira kwa mphamvu, ndipo mpweya wosakanikirana wochepetsera madzi umatsimikiziridwa ndi mpweya wa kuchepetsa madzi osakaniza. Mwachitsanzo, mpweya wa gasi sudzawonjezeka ukaphatikizidwa ndi calcium sugar water reducer, koma udzawonjezeka kwambiri ukaphatikizidwa ndi calcium wood water reducer.

(2) Kukhudza konkire

Wothandizira mphamvu woyambirira amatha kukulitsa mphamvu zake zoyambirira; Kukula kwa digiri yofananira yoyambira mphamvu kumadalira kuchuluka kwa wothandizila wamphamvu, kutentha kozungulira, kuchiritsa, chiŵerengero cha simenti yamadzi ndi mtundu wa simenti. Zomwe zimakhudzidwa ndi mphamvu ya nthawi yayitali ya konkire ndizosagwirizana, ndi zapamwamba komanso zochepa. Oyambirira mphamvu wothandizira ali ndi zotsatira zabwino pa mlingo wololera wa mlingo, koma pamene mlingo uli waukulu, udzakhala ndi zotsatira zoipa pa mphamvu pambuyo pake ndi kulimba kwa konkire. Oyambirira mphamvu yochepetsera madzi imakhalanso ndi zotsatira zabwino zoyamba za mphamvu, ndipo ntchito yake ndi yabwino kusiyana ndi ya wothandizira mphamvu yoyambirira, yomwe imatha kulamulira kusintha kwa mphamvu mochedwa. Triethanolamine imatha kulimbikitsa mphamvu yoyambirira ya simenti. Ikhoza kufulumizitsa hydration ya tricalcium aluminate, koma kuchedwetsa hydration wa tricalcium silicate ndi dicalcium silicate. Ngati zomwe zili pamwambazi, mphamvu ya konkire idzachepetsedwa.

Chokhalitsa sulphate oyambirira mphamvu wothandizila alibe mphamvu pa kulimbikitsa dzimbiri, pamene mankhwala enaake oyambirira mphamvu wothandizila lili lalikulu kuchuluka kwa ayoni kolorayidi, amene amalimbikitsa kulimbikitsa dzimbiri. Mlingo ukakhala waukulu, kukana kwa dzimbiri kwa mankhwala, kukana kuvala komanso kukana chisanu kudzachepetsedwa. Kwa konkire, kuchepetsa mphamvu yosinthika ya konkire ndikuwonjezera kutsika koyambirira kwa konkriti sikukhudza gawo lamtsogolo la konkire. Pakalipano, kugwiritsa ntchito zowonjezera zokhala ndi chloride kwaletsedwa muyeso yatsopano ya dziko. Pofuna kupewa zotsatira za mchere wa chloride pakuwonjezera dzimbiri, dzimbiri zoletsa ndi mchere wa chloride zimagwiritsidwa ntchito limodzi.

Pamene ntchito sulphate oyambirira mphamvu wothandizira, izo kuonjezera alkalinity wa konkire madzi gawo, choncho tisaiwale kuti pamene akaphatikiza lili yogwira silika, izo zimalimbikitsa anachita pakati pa alkali ndi akaphatikiza, ndi chifukwa konkire kuonongeka chifukwa cha zamchere. kukulitsa.