Inhloso evamile usimende we-portland

Inhloso evamile I-Portland Cement iwuhlobo lukasimende olusebenza ngogesi olusetshenziswa kakhulu ekwakheni. Yenziwa ngokugaya i-clinker, okuwuhlobo lwe-limestone eye yashiswa kwamazinga okushisa aphakeme kakhulu futhi yahlanganiswa ne-gypsum. Le ngxube ibe isigaywa ibe impushana, esetshenziselwa ukwenza ukhonkolo, udaka nezinye izinto zokwakha.

Enye yezinzuzo eziyinhloko zenhloso evamile usimende wasePortland ukuguquguquka kwayo. Ingasetshenziselwa izinhlelo eziningi ezahlukene, kusukela ekwakheni izakhiwo ezinkulu kuya ekudaleni amaphrojekthi amancane asekhaya. Futhi ishibhile, okwenza kube ukukhetha okudumile kubo bobabili osonkontileka abangochwepheshe kanye nabenza ngokwakho.

Enye inzuzo yenhloso evamile ye-Portland usimende amandla ayo. Uma ixutshwe namanzi, yenza unamathisele oqina ngokuhamba kwesikhathi, ube yimpahla eqinile, eqinile. Lokhu kuyenza ilungele ukusetshenziswa ezinhlelweni ezinokucindezeleka okuphezulu, njengezisekelo zokwakha, amabhuloho, nezinye izakhiwo ezidinga ukumelana nemithwalo esindayo.

Ngaphezu kwamandla ayo, inhloso evamile usimende wasePortland ubuye umelane kakhulu nesimo sezulu kanye nokulimala kwamakhemikhali. Ingamelana nokuchayeka ezimweni ezinzima zemvelo, okuhlanganisa imvula, umoya, namazinga okushisa aphezulu, ngaphandle kokulahlekelwa ubuqotho bayo besakhiwo. Lokhu kwenza kube ukukhetha okudumile kumaphrojekthi angaphandle, njengama-patio, imigwaqo yaseceleni, nezindonga zokugcina.

Inhloso evamile usimende wasePortland ungenziwa ngokwezifiso ukuze uhlangabezane nezidingo ezithile zephrojekthi. Isibonelo, ingaxutshwa nezithasiselo ezihlukahlukene, ezifana nomlotha wempukane noma i-silica fume, ukuthuthukisa amandla ayo, ukuqina, noma ukusebenza kahle. Lokhu kuvumela osonkontileka ukuthi balungise usimende ukuze uhlangabezane nezidingo ezihlukile zamaphrojekthi abo.

Kodwa-ke, kukhona futhi imikhawulo ethile enjongweni jikelele usimende wasePortland. Enye yezingqinamba eziyinhloko umthelela wayo kwezemvelo. Ukukhiqizwa kukasimende kuwumthombo omkhulu wokukhishwa kwekhabhoni, futhi ukumbiwa nokuthuthwa kwezinto ezingavuthiwe kungaba nomthelela omkhulu emvelweni. Ngenxa yalokhu, kunomnyakazo okhulayo obheke ekusebenziseni izinto zokwakha ezisimeme, njengokhonkolo ogaywe kabusha, ukunciphisa umthelela wokwakhiwa kwemvelo.

Enye inselele ngenhloso evamile usimende wasePortland amandla ayo okuqhekeka nokushwabana. Uma usimende woma, uba nenqubo ebizwa ngokuthi i-hydration, engase ibangele ukuthi inciphe kancane. Ngokuhamba kwesikhathi, lokhu kushwabana kungabangela usimende ukuba uqhekeke noma ube brittle, okungase kuphazamise ubuqotho bawo besakhiwo. Ukuvimbela lokhu, osonkontileka kungase kudingeke basebenzise izithasiselo ezikhethekile noma izinto zokuqinisa, njengezinsimbi zensimbi, ukuze kuqinisekiswe ukuthi usimende uhlala uqinile futhi uzinzile.

Sengiphetha, inhloso evamile usimende wase-Portland uyimpahla yokwakha eguquguqukayo, ehlala isikhathi eside, futhi engabizi esetshenziswa kabanzi ekwakheni. Nakuba inokulinganiselwa okuthile, okuhlanganisa umthelela wayo kwezemvelo kanye namandla okuqhekeka nokuncipha, isalokhu iyisinqumo esithandwayo ezinhlobonhlobo zamaphrojekthi wokwakha. Njengoba imboni yezokwakha iqhubeka nokuthuthuka futhi izinzile, kungenzeka ukuthi izinto ezintsha kanye nobuchwepheshe kuzovela ukuze kuthuthukiswe ukusebenza nokusimama kwenhloso evamile usimende wase-Portland.