I-Ready-mix concrete (i-RMC) ikhiqizwa ezitshalweni zokubhaka njengokucaciswa kukakhonkolo bese idluliselwa ezindaweni zephrojekthi. Izitshalo zokuxuba ezimanzi zithandwa kakhulu kunezitshalo zokuxuba ezomile. Ezitshalweni zokuxuba ezimanzi, zonke izithako zikakhonkolo kufaka amanzi zixutshwe kumxube ophakathi bese zidluliselwa ezindaweni zeprojekthi ngamaloli we-agitator. Ngesikhathi sokuhamba, amaloli aqhubeka ngokuzungeza ngo-2 ~ 5 rpm ukugwema ukusethwa nokuhlukaniswa kokhonkolo. Konke ukusebenza kwesitshalo kulawulwa kusuka egumbini lokulawula. Izithako zikakhonkolo zilayishwa kusihlanganisi njengokuklanywa kokuxuba. Umklamo wokuxubana kakhonkolo uyindlela yokwenziwa kokhonkolo wemitha elilodwa. Idizayini yokuxuba kufanele iguqulwe ngokuhlukahluka kwamandla adonsela phansi kasimende, okuhlanganisiwe okuhlanganisiwe, nokuhlanganiswa okuhle; izimo zokuswakama kokuqoqiwe, njll. Isibonelo, uma amandla adonsela phansi we-coarse aggregate enyusiwe, isisindo se-coarse aggregate kufanele sikhuliswe ngokufanele. Uma ingqikithi iqukethe inani elengeziwe lamanzi ngaphezulu kwezimo ezomile zomhlaba ogcwele, inani lokuxuba amanzi lizoncishiswa ngokufanele. Esitshalweni se-RMC, i-Quality Control Engineer kufanele yenze uhlu lokuhlola ukuqinisekisa ikhwalithi yomkhiqizo.
I-RMC inezinzuzo eziningi kunokuxubana esizeni. I-RMC (i) ivumela ukwakhiwa okusheshayo, (ii) kunciphisa izindleko ezihambisana nezabasebenzi kanye nokugadwa, (iii) inokulawula okuphezulu kwekhwalithi ngokulawula okunembile nangekhompyutha kwezithako zikakhonkolo, (iv) kusiza ekunciphiseni ukumoshwa kukasimende, (v) ngaphandle kokungcola, (vi) kusiza ukuqedwa kwephrojekthi ngaphambi kwesikhathi, (vii) kuqinisekisa ukuqina kokhonkolo, (viii) kusiza ekongeni izinsiza zemvelo, futhi (ix) kuyindlela ephumelelayo yokwakha endaweni elinganiselwe.
Ngakolunye uhlangothi, i-RMC inokulinganiselwa okuthile futhi: (i) isikhathi sokuhamba sisuka esitshalweni sisiya endaweni yephrojekthi siyinkinga enkulu njengokonkethi obeka isikhathi futhi angeke usetshenziswe uma ukhonkolo usetha ngaphambi kokuthulula esizeni, (ii) amaloli we-agitator ukwengeza ukugcwala komgwaqo okwengeziwe, futhi (iii) imigwaqo ingonakala ngenxa yomthwalo osindayo othwalwa amaloli. Uma iloli lithwala ama-cubic metres ayi-9 kakhonkolo, isisindo seloli singaba ngamathani angama-30. Noma kunjalo, kunezindlela zokunciphisa lezi zinkinga. Ngokusebenzisa ukuhlanganiswa kwamakhemikhali, isikhathi sokusetha usimende singalulwa. Imigwaqo ingakhiwa ngokubheka isisindo samaloli we-agitator. I-RMC nayo ingadluliselwa ngamaloli amancane athwala amandla ekhilometre elilodwa kuya kweziyisikhombisa likakhonkolo. Uma ubheka izinzuzo ze-RMC ngokuxubana esizeni, i-RMC idumile emhlabeni wonke. Kungaziwa ukuthi cishe uhhafu wenani eliphelele likakhonkolo osetshenzisiwe emhlabeni jikelele likhiqizwa ezitshalweni ze-RMC.
Izithako ze-RMC usimende, okuhlanganisiwe okuhlanganisiwe, ukuhlanganiswa okuhle, amanzi, nokuhlanganiswa kwamakhemikhali. Ngaphansi kwamazinga wethu kasimende, izinhlobo ezingama-27 zikasimende zichaziwe. Uhlobo lwe-CEM I lusimende olususelwa ku-clinker kuphela. Kwezinye izinhlobo, ingxenye ye-clinker ithathelwa indawo ukuxubana kwamaminerali, okufana ne-fly ash, i-slag, njll. Ngenxa yesilinganiso esisheshayo sokuphendula kwamakhemikhali ngamanzi, isamente elisuselwa kwizimbiwa lingcono uma liqhathaniswa nosimende we-clinker kuphela. Usimende osuselwa ekubambeni usimende futhi ugcina ukhonkolo usebenze isikhathi eside. Iphinde inciphise ukuqoqwa kokushisa kukhonkolo ngenxa yokusabela okuhamba kancane ngamanzi.
Isikhathi Iposi: Jul-17-2020