Usuku lwePost: 13, Jun, 2022
Ama-admixtures abhekisele ekilasini lezinto zokwakha ezingathuthukisa ngempumelelo izakhiwo eyodwa noma eziningi zikakhonkolo. Okuqukethwe kwalo ngokuvamile kungama-akhawunti angaphansi kuka-5% wokuqukethwe kosimende, kepha kungathuthukisa kakhulu ukuwa kokusebenza, amandla, ukuqina kokhonkolo noma ukulungisa isikhathi nokugcina usimende.
1. Ukuhlukaniswa kwama-admixtures:
I-Concrete Admixtures ngokuvamile ihlukaniswa ngokuya ngemisebenzi yazo eyinhloko:
a. Ama-Admixtures ukuthuthukisa izakhiwo ze-heroological zikakhonkolo. Kune-ejenti yokunciphisa amanzi, i-ejenti yokufaka umoya, umenzeli wokupompa nokunye.
b. Ama-admixtures okulungisa ukusetha nokuqina kwezakhiwo zikakhonkolo. Kukhona ikakhulukazi ama-retaarders, ama-accelerator, ama-ejenti wamandla okuqala, njll.
c. Ama-admixtures wokulungisa okuqukethwe komoya kokhonkolo. Kunezinceku zokufaka umoya, ama-ejenti angena emoyeni, ama-foaming agents, njll.
d. Ama-admixtures ukuthuthukisa ukuqina kokhonkolo. Kunama-ejenti wokufaka umoya, ama-ejenti angenamanzi, ukugqwala inhibitors nokunye.
e. Ama-Admixtures ahlinzeka ngezakhiwo ezikhethekile zikakhonkolo. Kune-antifreeze, i-ejenti yokwanda, onemibala, umenzeli ongenisa umoya kanye ne-ejenti yokupompa.
2. I-superplastizers evame ukusetshenziswa
Ukunciphisa amanzi okunciphisa amanzi kubhekisele ekuhlanganiseni okunganciphisa ukusetshenziswa kwamanzi okuxubana ngaphansi kwesimo esifanayo sokwenza ukhonkolo; Noma ingakhuphula ukuncipha kokhonkolo lapho isilinganiso sokhonkolo kanye nokusetshenziswa kwamanzi kuhlala kungashintshiwe. Ngokwamazwe wokunciphisa amanzi noma ukwanda kwesikhumba, kuhlukaniswe ngezigaba ezimbili: amanzi ajwayelekile anciphisa umenzeli kanye ne-ejenti yokunciphisa amanzi aphezulu.
Ngaphezu kwalokho, kukhona ama-ejenti ancishisiwe ancishisiwe amanzi, anjenge-agents angezelela komoya, anezinkinga zokunciphisa amanzi nemiphumela yokungena komoya; Ama-ejenti akhulisa amanzi okuqala anciphise amanzi anciphisa ukunciphisa amanzi futhi athuthukisa amandla okuthuthuka; Amanzi anciphisa i-ejenti, nawo anomsebenzi wokubambezela isikhathi sokusetha nokunye.
Umsebenzi oyinhloko wokunciphisa amanzi:
a. Kuthuthukisa kakhulu i-fluidity ngesilinganiso esifanayo sokuxuba.
b. Lapho ubisi lwe-fluidity kanye nomthamo wesemusi kungashintshiwe, ukunciphisa ukusetshenziswa kwamanzi, kunciphise isilinganiso samanzi, bese ukhulisa amandla.
c. Lapho ushukela namandla kuhlala kungashintshiwe, ukusetshenziswa kosimende kugcinwa futhi izindleko ziyancishiswa.
d. Thuthukisa ukusebenziseka kokhonkolo
e. Thuthukisa ukuqina kokhonkolo
f. Lungiselela amandla aphezulu kanye nokhonkolo ophezulu wokusebenza.
Uchungechunge lwe-Polysulfonate: kufaka phakathi i-Naphthalene sulfonate formaldehyde condensate (NSF), i-melamine sulfonate sulycondensate (MSF), i-P-Aminobenzene sulfondensate, i-POYSSTYENREE SULfonate, i-PolyStYerene Sulfonate kanye ne-Sulfoneted Ketone I-Aldehyde Remins, njll. Isibonelo, i-FDN yethu esetshenziswa kakhulu ingeyakwa-Naphthalene Sulfonate Formaldehyde Collen.
I-Polycarboxylate Series: Lawula ngempumelelo inqubo yokuqala ye-hydration futhi unciphise ukulahleka kokhonkolo.
Umehluko phakathi kokukhulisa i-ejenti ephakeme ngamanzi kanye ne-ejenti evamile yokunciphisa amanzi ngokukhethekile kuboniswa kulokho okukuhle kakhulu kokukhulisa amanzi kungakhulisa ngokuqhubekayo uketshezi olubanzi, noma ngokuqhubekayo ukunciphisa imfuno yamanzi. Uhla olusebenzayo lwamanzi ajwayelekile anciphisayo ancanyana.
Umphumela we-superplastizer emthanjeni omncane awukwazi ukusetshenziswa njengesisekelo sokwahlulela ukusebenza kwe-superplastizer. Lokhu kufanele kubhekwe lapho kukhethwa amanzi anciphisa amanzi. Umthamo omkhulu we-superplastizer kufanele anqunywe ngocwaningo, futhi akufanele asetshenziswe kuphela ngokuya ngomthamo womkhiqizi we-superplastizer.
Isikhathi sePosi: Jun-13-2022
