Usuku lwePost: 26, Aug, 2024
1. Ukwakheka kwamaminerali
Izici eziphambili zokuqukethwe kwe-C3A ne-C4AF. Uma okuqukethwe kwalezi zingxenye kuphansi, ukuhambisana kosimende kanye nokunciphisa amanzi kuzoba kuhle, phakathi kwalo i-C3A inethonya elinamandla ekuguqukeni. Lokhu kungenxa yokuthi amanzi anciphise ama-adederors alungisa ama-adederbs C3A ne-C4AF. Ngaphezu kwalokho, izinga le-hydrate le-C3A linamandla kunaleso se-C4AF, futhi likhuphuka ngokwanda kobuciko besilo. Uma izakhi eziningi ze-C3A zitholakala ku-cell, kuzoholela ngqo kwinani elincane lamanzi elichithwe ku-sulfate, okuholela ekwehliseni inani le-sulfate ion ekhiqizwayo.
2. Ubumsulwa
Uma usimende muhle, indawo yayo eqondile engaphezulu izoba yinkulu, futhi umphumela we-floccation uzoba sobala ngokwengeziwe. Ukuze ugweme lesakhiwo se-floccution, inani elithile lokunciphisa lamanzi lidinga ukungezwa kulo. Ukuze uthole umphumela olwanele ukugeleza, kuyadingeka ukwandisa ukusetshenziswa kwamanzi okunciphisa amanzi ngezinga elithile. Ngaphansi kwezimo ezijwayelekile, uma usimende ulungile, indawo ethile engaphezulu kasimende iphakeme kakhulu, futhi ithonya lokunciphisa amanzi ngenani eligcwele u-cutel lizokwanda, lizokwenza kube nzima ukuqinisekisa ukufutheka kukakhonkolo. Ngakho-ke, kwinqubo yangempela yokuhlela ngokhonkolo ngesilinganiso esiphakeme samanzi, isilinganiso samanzi ukuya endaweni kufanele silawulwe ngokucophelela ukuze siqinisekise ukuthi amasimende namanzi okunciphisa amanzi anokuvumelana okuqinile.
3. Ukufakwa kwezinenda
Ithonya lezinhlayiyana kasimende eziguqulweni kosesiko ngokomusi ikakhulukazi likhonjiswa umehluko kokuqukethwe kwe-powder elungile, ikakhulukazi okuqukethwe izinhlayiya ezingaphansi kwama-micron, okunomphumela oqondile kakhulu kwi-adsorption yokuncibilikisa amanzi. Okuqukethwe izinhlayiya ezingaphansi kwama-micron ayi-3 ku-centsis kuyahlukahluka kakhulu ngabakhiqizi be-ceyili ehlukene, futhi kuvame ukusatshalaliswa phakathi kuka-8-18%. Ngemuva kokusebenzisa uhlelo oluvulekile lokugeleza kwamanga, indawo ethile yoseyili ithuthukisiwe kakhulu, enomthelela oqondile kakhulu ekuguqukeni kwamasimende nakumanzi.
4. Ukujikeleza kwezinhlayiyana kosimende
Kunezindlela eziningi zokuthuthukisa ukuzuliswa kukasimende. Esikhathini esedlule, izinhlayiya zikasimende zazivame ukuba zibe yindawo yokugwema imiphetho yokugaya namakhona. Kodwa-ke, kwinqubo yangempela yokusebenza, inani elikhulu lezinhlayiya ezinhle ze-powder lithambekele ukuvela, elinomthelela oqondile ekusebenzeni kuka usimende. Ukuze uxazulule le nkinga ngempumelelo, ubuchwepheshe bokugaya insimbi eyindilinga bungasetshenziswa ngqo, okungathuthukisa kakhulu ukuguquguquka kwezinhlayiya zensimbi, kunciphise ukulahleka okusebenzayo, nesikhathi sokugaya usimende. Ngemuva kokujikeleza kwezinhlanzi zikasimende kuyathuthuka, yize imiphumela emthanjeni ogcwele amanzi anciphisa kakhulu, ingathuthukisa uketshezi lokuqala lukasenti lokunamathisela kosimende ngezinga elikhulu. Le nto izoba sobala ngokwengeziwe lapho inani lokunciphisa amanzi elisetshenzisiwe lincane. Ngaphezu kwalokho, ngemuva kokuthuthukisa ukuzungeza kwezinhlayiya kasimende, uketshezi lokunamathisela kosimende lungathuthukiswa ngezinga elithile.
5. Izinto ezihlanganisiwe
Ekusetshenzisweni kwamanje kukaseyili ezweni lami, ezinye izinto zivame ukuxutshwa ndawonye. Lezi zinto ezihlanganisiwe zivame ukufaka phakathi i-blast delace Slag, Fly Ash, ama-Gaal Gang, i-limestone, i-limestone, njll. Ngemuva kokuncipha kwamanzi futhi i-Fly ASHLE zitholakale. Uma umlotha wentaba-mlilo kanye neqembu lamalahle asetshenziswa njengezinto ezixubile, kunzima ukuthola ukuvumelana nezimo okuhle. Ukuze uthole umphumela ongcono wokunciphisa amanzi, kudingeka amanzi amaningi okunciphisa amanzi. Uma u-fly ash noma i-zeolite ifakiwe kwezinto ezixubile, ukulahleka kokulahla ngokuvamile kuhlobene ngqo nobunzima bomlotha wentaba-mlilo. Ukulahleka okuncane kokulahla, amanzi amaningi adingekayo, futhi akhuphuka impahla yomlotha wentaba-mlilo. Ngemuva kokuzijwayeza okuningi, kuye kwafakazelwa ukuthi ukuguquguquka kwezinto ezihlanganisiwe ku-Cement kanye ne-Agent enciphisa amanzi kuboniswa ikakhulukazi ezicini ezilandelayo: isilinganiso sokushintsha. Uma umlotha we-fly usetshenziselwa ngqo ukufaka unamathisela usimende, uxhaso lwayo lokuqala ungancishiswa kakhulu ngemuva kokuthi impahla efakwe esikhundleni idlula ama-30%. Uma uZeolite esetshenziselwa ngqo ukufaka usimende, kulula ukudala ufforidity wokuqala wokuqala we-paste. Ngaphansi kwezimo ezijwayelekile, ngokwanda kwezinga lokufakwa esikhundleni se-SLAG, ukugcinwa kwe-flow kasimende unamathisela. Lapho umlotha we-fly ekhuphuka, izinga lokulahleka kwe-paste lizokwanda libe ngezinga elithile. Lapho isilinganiso sokufakwa esikhundleni se-zeolite sidlula i-15%, ukulahleka kokugeleza kokunamathisela kuzobonakala kakhulu.
I-6. Umphumela wohlobo lokuhlanganiswa ku-fluidity ka usimende unamathisela
Ngokungeza isilinganiso esithile se-admixtures ku-ukhonkolo, amaqembu we-hydrophobic we-admixtures azobe ekhishwa ama-adsorbed ngaphezulu kwezinhlayiya zensimbi, futhi amaqembu e-hydrophilic azokhomba kwikhambi, ngaleyo ndlela akha ifilimu ye-adsorption. Ngenxa yomphumela oqondisayo we-adsorption wokuhlanganiswa, ingaphezulu lezinhlayiya zokwenza usimende zizoba namacala esibonakaliso esifanayo. Ngaphansi komphumela wamacala afana namacala aphindiselane, usimende uzokwakha ukusakazwa kwesakhiwo esisezingeni eliphezulu esigabeni sokuqala sokungezwa kwamanzi, ukuze isakhiwo se-flocculent sikhishwe emanzini, ngaleyo ndlela sithuthukise uketshezi lomzimba wamanzi ukuze akwenze okuthile isilinganiso. Uma kuqhathaniswa nezinye ama-admixtures, isici esiyinhloko se-polyhydroxy acid admixtures ukuthi bangakha amaqembu anemiphumela ehlukene ku-main chain. Ngokuvamile, ama-hydroxy acid admixtureturetures anomthelela omkhulu ebusweni bukashukela. Enqubweni yokulungiselela ukhonkolo onamandla aphezulu, engeza isilinganiso esithile se-polyhydroxy acid admixtures ingathola imiphumela yokulungiselela kangcono. Kodwa-ke, kwinqubo yokusebenzisa i-polyhydroxy acid admixtures, inezidingo eziphakeme ngokusebenza kwezinto zokwenziwa kosimende. Ekusetshenzisweni kwangempela, ingxube ithambekele ekuboneni nasekunamathela ezansi. Ekusetshenzisweni kwakamuva kwesakhiwo, futhi kuthambekele ekhasini lamanzi kanye nokuqina. Ngemuva kokudilizwa, futhi kuthambekele kubulukhuni, imigqa yesihlabathi, nezimbobo zomoya. Lokhu kuhlobene ngokuqondile nokungalingani kwe-polyhydroxy acid admixtures nge usimende nama-mineral admixtures. Ama-polyhydroxy acid admixtures angama-admixtures angama-admixtures ngokuvumelana okubi kakhulu ku-cement phakathi kwazo zonke izinhlobo zama-admixture.
Isikhathi Seposi: Aug-26 26-2024
