Izixube ezisheshisa ukhonkolo ziyizithasiselo zamakhemikhali ezisetshenziselwa ukusheshisa inqubo yokumisa nokuqina kokhonkolo.Lezi zixube ziwusizo ikakhulukazi emazingeni okushisa abandayo noma ezimeni lapho ukhonkolo udinga ukusethwa ngokushesha, njengalapho kulungiswa izimo eziphuthumayo noma amaphrojekthi wokwakha azwela isikhathi.

Kunezinhlobo ezimbili eziyinhloko zokusheshisa izixube zikakhonkolo: i-chloride-based and non-chloride-based.Izixube ezisekelwe ku-chloride, ngokuvamile eziqukethe i-calcium chloride noma i-sodium chloride, ziyinhlanganisela esheshisa kakhulu futhi esebenza ngempumelelo.Kodwa-ke, ngenxa yamandla abo okubangela ukugqwala kokuqiniswa kwensimbi, kufanele kusetshenziswe kuphela kukhonkolo engaqinisiwe noma ezimweni lapho ukuqinisa kuvikelwe ngokwanele.Izixube zokusheshisa ezingezona i-chloride, ngokuvamile eziqukethe i-calcium nitrate noma i-calcium formate, ziyindlela ephephile futhi ingasetshenziswa kukhonkolo eqinisiwe.

Indlela Okusheshisa Inhlanganisela Esebenza Ngayo

Izixube ezisheshayo zisebenza ngokwandisa izinga lokusabela kwamakhemikhali okwenzeka phakathi kukasimende namanzi kungxube kakhonkolo.Lokhu kusabela, okwaziwa nge-hydration, yikho okwenza ingxube iqine futhi ithole amandla.

Uma i-admixture esheshayo ingeziwe ekuxubeni kwekhonkrithi, yenza njenge-catalyst, isheshisa inqubo ye-hydration futhi ivumele ukhonkolo ukuthi usethe futhi uqine ngokushesha.Indlela eqondile esebenza ngayo izixube ezisheshayo iyahlukahluka kuye ngohlobo lwenhlanganisela esetshenzisiwe.Izixube ezisekelwe ku-chloride zisebenza ngokwehlisa indawo yokuqandisa yamanzi engxubeni kakhonkolo, iwavumele ukuthi azibeke futhi aqine emazingeni okushisa aphansi.Izixube ezingezona i-chloride zisebenza ngokusheshisa ukwakheka kwejeli ye-calcium silicate hydrate (CSH), okuyingxenye eyinhloko ebhekele amandla kakhonkolo.

Izinzuzo Zokusheshisa Izixuku

1. Ukusetha Okusheshayo Nokuqina

Inzuzo eyinhloko yokusheshisa izixube zekhonkrithi ukuthi zisheshisa inqubo yokumisa nokuqina kwengxube.Lokhu kuvumela izikhathi zokwakha ngokushesha kanye nokuqedwa ngokushesha kwamaphrojekthi azwela isikhathi.

2. Ukusebenza Kwesimo Sezulu Esibandayo Okuthuthukisiwe

Izixube ezisheshayo ziwusizo ikakhulukazi ezimweni zezulu ezibandayo, lapho ukhonkolo ungathatha isikhathi eside ukusetha nokuqina.Ngokusheshisa inqubo ye-hydration, lezi zingxube zivumela ukhonkolo ukuba uthululwe futhi ubekwe emazingeni okushisa aphansi.

3. Amandla Angeziwe

Ngaphezu kokusheshisa inqubo yokumisa kanye nokuqina, ezinye izixube ezisheshisayo zingabuye zithuthukise amandla okhonkolo ophelile.Lokhu kungenxa yokuthi bakhuthaza ukwakheka kwejeli ye-CSH, okuyingxenye eyinhloko ebhekele amandla kakhonkolo.

4. Izindleko Ezincishisiwe

Ukusebenzisa izixube ezisheshayo kungasiza ekwehliseni izindleko zizonke zamaphrojekthi wokwakha ngokusheshisa izikhathi zokwakha nokuvumela ukuqedwa kwamaphrojekthi ngokushesha.Lokhu kungaholela ekongeni ezindlekweni zabasebenzi nezinye izindleko ezihlobene nokwakha.

Imikhawulo Yokusheshisa Okuxubile

1. Ingozi Yokugqwala

Ukusetshenziswa kwe-chloride-based acceleratingizingxubeekukhoneni okuqinisiwe kungandisa ingozi yokugqwala kokuqiniswa kwensimbi.Lokhu kungenza buthaka isakhiwo sikakhonkolo futhi kubangele ukulungiswa okubizayo.

2. Ukunciphisa Ukusebenza

Ukwengeza ingxube esheshayo kukhonkolo kunganciphisa ukusebenza kwayo, kwenze kube nzima kakhulu ukuhlanganisa nokuthulula.Lokhu kungaholela ezindlekweni ezengeziwe zomsebenzi nemishini.

3. Impilo Yeshelufu Elinganiselwe

Izixube ezisheshayo zineshelufu elilinganiselwe lempilo futhi zingalahlekelwa ukusebenza kwazo ngokuhamba kwesikhathi.Lokhu kungabangela isidingo se-admixture eyengeziwe yokwengezwa kumxube wekhonkrithi, okungandisa izindleko.

4. Amathuba okuqhekeka

Ukusheshisa izingxube kungabangela ukhonkolo ukuthi usethe futhi uqine ngokushesha, okungandisa ingozi yokuqhekeka uma ingxube ingelashwa kahle futhi iqiniswa.

Isiphetho

Izixube ezisheshisa ukhonkolo ziyithuluzi elisebenzayo lokusheshisa ukumiswa kanye nenqubo yokuqina kakhonkolo.Ziwusizo ikakhulukazi emazingeni okushisa abandayo namaphrojekthi wokwakha azwela isikhathi, okuvumela izikhathi zokuqedwa ngokushesha kanye nokuncipha kwezindleko zomsebenzi.Kodwa-ke, ukusetshenziswa kwe-chloride-based admixtures kukhonkolo eqinisiwe kungandisa ingozi yokugqwala, futhi i-non-chloride-based admixtures inganciphisa ukusebenza kwengxube.Izixube ezisheshayo nazo zineshelufu elilinganiselwe futhi zingandisa ingozi yokuqhekeka uma ingxube ingelapheki kahle futhi iqiniswa.Naphezu kwale mikhawulo, ukusheshisa ukuhlanganiswa kwezingxube kusalokhu kuyithuluzi elibalulekile kosonkontileka nonjiniyela abafuna ukusheshisa inqubo yokwakha kanye nokwenza ngcono ukusebenza kwezakhiwo zikakhonkolo.