Izithasiselo zikakhonkolo ezingasindi | Ama-ejenti Akhipha Amagwebu Asebenza Kakhulu Wokhonkolo Weselula
I-ejenti yokunciphisa amanzi ye-polycarboxylate iyi-graft copolymer enesakhiwo samangqamuzana esifana nekamu., iketango eliyinhloko iketango le-alkyl carbon elineqembu elisebenzayo le-carboxyl, kanti iketango elisemaceleni liyi polyoxyethylene (kanye/noma i-polyoxypropylene) iyunithi yesakhiwo enobude obuhlukile.
Iqembu le-carboxyl ochungechungeni oluyinhloko lwe-polycarboxylate superplasticizer likhangwa ukukhanga kwe-electrostatic kanye nezinhlayiya zikasimende.,Amayunithi e-Polyoxyethylene anobude obuhlukene eketangeni elihlangothini avimbela ezinye izinhlayiya zikasimende ukuthi zingasondeli ngokuvinjelwa kwe-steric futhi zifinyelele ukuhlakazwa kwazo kukasimende.Uma kuqhathaniswa nezinciphisi zamanzi ezisekelwe ku-naphthalene, ama-polycarboxylate superplasticizers anekhono elinamandla lokuhlakaza usimende futhi abonisa izinga eliphezulu lokunciphisa amanzi ngokhonkolo.Izinga lawo lokunciphisa amanzi seliphelile 40%, okunganciphisa kakhulu inani lamanzi okuxuba ukhonkolo.
Ukusetshenziswa kwamanzi kokhonkolo kunganquma isilinganiso samanzi-to-binder (isilinganiso samanzi nosimende), kanye nesilinganiso samanzi-to-binder (isilinganiso samanzi nosimende) ithinta ngokuqondile izici zemishini zikakhonkolo.Umthetho wesilinganiso samanzi nosimende ubheka ukuthi amandla okucindezela kakhonkolo angama-28d alingana ngokuqondile nokuvumelana kwesilinganiso samanzi nosimende.Ukuze kuqinisekiswe amandla okucindezela kakhonkolo., ochwepheshe bokukhiqiza ngokuvamile basebenzisa isilinganiso esincane samanzi ukuya ku-binder.
Ukuze kuthuthukiswe umnotho wekhonkrithi, ukunciphisa ukusetshenziswa kwamanzi kokhonkolo kuyindlela ephumelela kakhulu yokunciphisa isilinganiso samanzi-to-gel sikakhonkolo.
Ukuncishiswa kwamanzi okuxuba ukhonkolo kuzothinta ukusebenza kokhonkolo omusha, kanye ne-ejenti yokunciphisa amanzi e-polycarboxylate ingaqinisekisa ngempumelelo ukusebenza kwengxube kakhonkolo.Ngaphezu kwalokho, ubunye bezinto eziphilayo ze-polycarboxylic acid enciphisa amanzi kanye nokusetshenziswa kwamanzi okukhonkolo kuyabonakala.
Ushintsho ekusetshenzisweni kwamanzi kokhonkolo alugcini nje ngokunquma isilinganiso sekhonkrithi samanzi-to-binder, kodwa futhi kuthinta isilinganiso sekhonkrithi-kuya-slurry sikakhonkolo.Njengesilinganiso sokuhlanganisa amanzi, isilinganiso se-slurry-to-bone siyisici esibalulekile okufanele sicatshangelwe ekwakhiweni kwesilinganiso sokuxuba ukhonkolo.Isilinganiso se-slurry nengxube kakhonkolo isilinganiso senani eliphelele lamanzi okuxuba kanye ne-cementitious material kumthamo ophelele we-aggregate.. Ukuguqulwa kwesilinganiso se-slurry kuya kukhonkolo kuthinta ukusebenza kanye nokuzinza kwevolumu yekhonkrithi.Uma kuqhathaniswa nokuminyana kwezinto zikasimende (usimende: mayelana 3.0 g/cm3; fly umlotha: 1.9 ku 2.4 g/cm3; i-mineral powder: mayelana 2.6 g/cm3), ukuminyana kwamanzi (1.0 g/cm3) incane kakhulu kunabo,
Endabeni yenqwaba efanayo, ushintsho ekusetshenzisweni kwamanzi lunomthelela omkhulu kunani eliphelele le-slurry.Ngaphansi kwesimo sokuthi inani eliphelele lempahla yerabha ligcinwa lingashintshi., ukuncishiswa kokusetshenziswa kwamanzi kuzoholela nakanjani ekwehleni komthamo we-slurry yengxube, okuthinta ukusebenza kukakhonkolo omusha.Ngakho-ke, lapho unciphisa isilinganiso samanzi-to-binder ngokunciphisa ukusetshenziswa kwamanzi kokhonkolo, inani eliphelele lerabha kufanele lilungiswe ukuze kuqinisekiswe ukuthi isilinganiso se-slurry kuya kukhonkolo sihlala njalo.Nokho, abasebenzi abakhiqiza ukhonkolo bavame ukungawunaki umphumela wokusetshenziswa kwamanzi esilinganisweni se-slurry nethambo, okubangela ukuthi umthamo we-slurry uhluke kakhulu ngokushintsha kokusetshenziswa kwamanzi.
Ukuze kuqinisekiswe ukusebenza kokhonkolo, izisebenzi ezikhiqiza ukhonkolo zibeke phambili izidingo zobuchwepheshe eziphakeme zokunciphisa amanzi e-polycarboxylate. I-ejenti yokunciphisa amanzi ye-polycarboxylate ayigcini nje ngokuba nekhono eliqinile lokuhlakaza usimende., kodwa futhi udinga ukuba nekhono elihle le-plasticizing lengxube kakhonkolo, ukuze ukusebenza kukakhonkolo kuncike kakhulu ekusebenzeni kwe-ejenti yokunciphisa amanzi ye-polycarboxylate.
I-Cie-China.org ingumhlinzeki oholayo wezithasiselo zikakhonkolo wegwebu ohlinzeka nge-ejenti yokugwedla ukhonkolo, superplasticizer,isithuthukisi samandla kakhonkolo wegwebu kukhonkolo ongasindi, Amabhulokhi e-CLC. Uma ufuna superplasticizer, sicela ukhululeke Xhumana nathi.