Usuku lwePost: 30, Sep, 2024
(5) Umenzeli wamandla wakuqala kanye namanzi okuqala anciphise i-ejenti
Ezinye zingezwa ngqo njengabapondo owomile, kanti abanye kufanele baxutshwe zibe izixazululo futhi basebenzise ngokuya ngemiyalo yokusetshenziswa. Uma ixutshwe ngendlela ye-powder eyomile, kufanele ihlanganiswe nosimende nokuhlanganisa kuqala, bese wengeza amanzi, nesikhathi sokuxuba akufanele kube ngaphansi kwemizuzu engu-3. Uma isetshenziswa njengesixazululo, amanzi ashisayo ku-40-70 ° C angasetshenziswa ukusheshisa ukuchithwa. Ngemuva kokuthela, kufanele imbozwe ngefilimu yepulasitiki yokuyelapha. Ezindaweni eziphansi zokushisa, kufanele zimbozwe ngezinto zokufakelwa. Ngemuva kokuhlelwa kokugcina, kufanele kuniselwe futhi kuthathwe ngokushesha ukuze kuvulwe. Lapho kusetshenziselwa i-Steam Pring ukuze ukhonkolo exutshwe ne-ejenti yamandla okuqala, uhlelo lokulashwa lweSteam kumele lunqunywe ngocwaningo.
(6) Antifreeze
U-Antifreeze ucacisile amazinga okushisa angu -5 ° C, -10 ° C, -15 ° C nezinye izinhlobo. Lapho uyisebenzisa, kufanele ikhethwe ngokuya ngamazinga okushisa aphansi nsuku zonke. Ukhonkolo oxutshwe no-antifreeze kufanele usebenzise i-portland cement noma usimende ojwayelekile we-portland cement enebanga lamandla angaphansi kwama-42.5MPA. Ukusetshenziswa kosimende omkhulu we-alumina akuvunyelwe ngokuphelele. I-Chloride, i-nitrite kanye ne-nitrate antifrees anqatshelwe ngokuphelele ekusetshenzisweni kwamaphrojekthi kakhonkolo afakwe phambili. Izinto zokwenziwa ngokhonkolo kufanele zifudumale futhi zisetshenziswe, futhi izinga lokushisa le-mixender akumele libe ngaphansi kuka-10 ° C; Inani le-antiforeeze kanye nesilinganiso samanzi-usimende kumele alawulwe ngokuqinile; Isikhathi sokuxuba kufanele kube ngu-50% isikhathi eside kunokuxuba okushisa okujwayelekile. Ngemuva kokuthelula, kufanele imbozwe ngefilimu yepulasitiki kanye nezinto zokwenziwa, futhi akukho ukuthambisa okufanele kuvunyelwe ngesikhathi sokulungisa amazinga okushisa angemuhle.
(7) Umenzeli okhulayo
Ngaphambi kokwakha, ukuhlanganiswa kwecala kufanele kwenziwe ukunquma umthamo futhi uqinisekise inani lokunwetshwa elinembile. Ukuxubana kwemishini kufanele kusetshenziswe, isikhathi sokuxuba akufanele sibe ngaphansi kwemizuzu engu-3, futhi isikhathi sokuxuba kufanele kube yimizuzwana engama-30 isikhathi eside ngaphandle kokhonkolo ngaphandle kokhonkolo ngaphandle kokhonkolo ngaphandle kokhonkolo ngaphandle kokhonkolo ngaphandle kwama-conkste. I-Shrinkage-inxephezela ukhonkolo kufanele iboshwe ngomshini ukuze iqinisekise ukuxabana; Ukudlidliza okwenziwe ngomshini akumele kusetshenziselwe ukugcwalisa ngokhonkolo kokwandiswa nge-slump ngenhla kwe-150mm. Ukhonkolo ovelayo kufanele welaphe esimweni esinomswakama isikhathi esingaphezu kwezinsuku eziyi-14, futhi lokhu okulandelayo kufanele kwenziwe kwelaphe ngokufafaza umenzeli olapha.
(8) Ukusheshisa umenzeli
Lapho usebenzisa ukusheshisa ukusetha ama-ejenti, kufanele kubhekwe ngokugcwele ekuguqukeni kwesimende, kanye nemibandela yokusebenzisa kanye nokusetshenziswa kufanele kwenziwe kahle. Uma okuqukethwe kwe-C3A nama-C3S ku-CEAND, ingxube ekhonkolo ye-accelerator kumele ithululwe noma ichafazwe kungakapheli imizuzu engama-20. Ngemuva kokuthi ukhonkolo yakhelwe, kufanele ifakwe umswakama futhi inakekelwe ukuvikela ukomisa nokuqhekeka.
Isikhathi sePosi: Oct-09-2024
