Umhla wokuThumela:23,Sep,2024
1)Umxube
I-dosage ye-admixture encinci (0.005% -5% yobunzima besamente) kwaye umphumo ulungile. Kufuneka ibalwe ngokuchanekileyo kwaye impazamo yokulinganisa akufanele idlule kwi-2%. Uhlobo kunye nedosi ye-admixtures kufuneka igqitywe ngovavanyo olusekwe kwizinto ezifana neemfuno zekhonkrithi yokusebenza, ulwakhiwo kunye neemeko zemozulu, izinto eziphathekayo eziphathekayo kunye nemilinganiselo yokuxuba. Xa isetyenziswe ngendlela yesisombululo, umthamo wamanzi kwisisombululo kufuneka ufakwe kwisixa esipheleleyo sokuxuba amanzi.
Xa usetyenziso oludibeneyo lwezongezo ezimbini okanye ngaphezulu zibangela i-flocculation okanye imvula yesisombululo, izisombululo kufuneka zilungiswe ngokwahlukileyo kwaye zongezwe kumxube ngokulandelanayo.
(2) I-arhente yokunciphisa amanzi
Ukuze kuqinisekiswe ukuxuba okufanayo, i-arhente yokunciphisa amanzi kufuneka yongezwe ngendlela yesisombululo, kwaye isixa sinokunyuswa ngokufanelekileyo njengoko ukushisa kuphakama. I-arhente yokunciphisa amanzi kufuneka yongezwe kumxube ngexesha elifanayo namanzi okuxuba. Xa uthutha ikhonkrithi kunye neloli yokuxuba, i-agent yokunciphisa amanzi inokudibaniswa ngaphambi kokukhulula, kwaye izinto eziphathekayo zikhutshwe emva kokuvuselela imizuzwana engama-60-120. Imixube eqhelekileyo yokunciphisa amanzi ifanelekile kulwakhiwo lwekhonkrithi xa ubushushu bemihla ngemihla bungaphezulu kwe-5℃. Xa ubushushu bemihla ngemihla bungaphantsi kwe-5℃, kufuneka zisetyenziswe ngokudityaniswa ne-admixtures yamandla okuqala. Xa usebenzisa, nikela ingqalelo kwi-vibrating kunye ne-degassing. Ikhonkrithi exutywe kunye ne-arhente yokunciphisa amanzi kufuneka iqiniswe kwinqanaba lokuqala lokunyanga. Ngexesha lokunyangwa komphunga, kufuneka ifikelele kumandla athile ngaphambi kokuba ifudunyezwe. Uninzi lwee-agent eziphezulu zokunciphisa amanzi zinelahleko enkulu ye-slump xa isetyenziswe kwikhonkrithi. Ilahleko ingaba yi-30% -50% kwimizuzu engama-30, ngoko kufuneka kuthathelwe ingqalelo ngexesha lokusetyenziswa.
(3) I-arhente yokungenisa umoya kunye ne-ejenti yokunciphisa amanzi yokungenisa umoya
Ikhonkrithi eneemfuno zokumelana ne-freeze-nyibiliki ephezulu kufuneka ixutywe kunye ne-air-entraining agents okanye ii-agent zokunciphisa amanzi. Ikhonkrithi egxininisiweyo kunye nekhonkrithi ye-steam akufanele isebenzise i-air-entraining agents. I-agent-entraining agent kufuneka yongezwe ngendlela yesisombululo, okokuqala ifakwe emanzini okuxuba. I-ejenti yokungenisa umoya ingasetyenziswa kunye ne-ejenti yokunciphisa amanzi, i-arhente yamandla kwangethuba, i-retardant, kunye ne-antifreeze. Isisombululo esilungisiweyo kufuneka sichithe ngokupheleleyo. Ukuba kukho i-flocculation okanye imvula, kufuneka itshiswe ukuze inyibilike. Ikhonkrithi kunye ne-ejenti yokungenisa umoya kufuneka ixutywe ngomatshini, kwaye ixesha lokuxuba kufuneka libe likhulu kunemizuzu engama-3 kwaye ngaphantsi kwemizuzu emi-5. Ixesha ukusuka ekukhupheni ukuya ekuthululeni kufuneka lifinyezwe kangangoko kunokwenzeka, kwaye ixesha lokungcangcazela akufanele lidlule imizuzwana engama-20 ukuphepha ukulahlekelwa ngumxholo womoya.
(4) Iarhente yonciphiso lwamanzi abuyiswayo kunye nasemva
Kufuneka yongezwe ngendlela yesisombululo. Xa zininzi izinto ezinganyibilikiyo okanye ezinganyibilikiyo, kufuneka zixutywe ngokulinganayo phambi kokusetyenziswa. Ixesha lokuvuselela lingandiswa ngemizuzu eyi-1-2. Ingasetyenziswa ngokudibanisa nezinye izixube. Kufuneka incenkceshelwe kwaye iphiliswe emva kokuba ikhonkrithi ibekwe ekugqibeleni. Iretha akufunekanga isetyenziswe kulwakhiwo lwekhonkrithi apho ubuncinci bobushushu bemihla ngemihla bungaphantsi kwe-5℃, kwaye akufuneki isetyenziswe yodwa ukwenza ikhonkrithi kunye nekonkrithi enyangelwe ngumphunga eneemfuno zamandla kwangethuba.
Ixesha lokuposa: Sep-23-2024
