Idethi yokuthunyelwe:20,May,2024

7. Uma i-polycarboxylic acid admixture ixubene nesilingo (ekukhiqizeni), lapho kuphela umthamo oyisisekelo ufinyelelwa, ukusebenza kokuqala kokukhonkolo kuzokwaneliswa, kodwa ukulahlekelwa ukhonkolo kuzoba kukhulu; ngakho-ke, ngesikhathi sokuxuba ukuhlolwa (ukukhiqiza), inani kufanele lenyuswe ngendlela efanele. Kuphela ngokulungisa umthamo (okungukuthi, ukufinyelela umthamo we-saturation) lapho inkinga yokulahlekelwa okukhulu kokuwohloka ingaxazululeka.

8.Ngemva kokunciphisa inani lezinto ze-cementitious, isilinganiso samanzi-samente kufanele siqinisekiswe ngokuqinile ngesikhathi senqubo yokukhiqiza. Uma ukulahlekelwa kwe-slump kukhulu, indlela kuphela yokwandisa inani le-admixture futhi wengeze i-admixture kabili. Ungangezi amanzi ukuxazulula inkinga, ngaphandle kwalokho kuzokwenza kalula ukwehla okukhulu kwamandla.

9. I-ejenti yokunciphisa amanzi ye-Polycarboxylate ingumkhiqizo onezinga eliphezulu lokunciphisa amanzi kanye nokuhlakazeka okuphezulu. Ekulawuleni ukukhiqiza, inkomba ye-fluidity (ukunwetshwa) kokhonkolo kufanele isetshenziselwe ukukala ukusebenza kukakhonkolo. I-Slump ingasetshenziswa kuphela njengenani lereferensi.

10. Amandla kakhonkolo anqunywa ngokuyinhloko isilinganiso se-water-binder. I-ejenti yokunciphisa amanzi ye-Polycarboxylate inezici zezinga eliphezulu lokunciphisa amanzi, elinganciphisa kalula ukusetshenziswa kwamanzi esilinganisweni sokuxuba sokukhiqiza, ngaleyo ndlela kufezeke inhloso yokunciphisa isilinganiso sokuhlanganisa amanzi nokunciphisa amandla kakhonkolo. izindleko eziphelele. Njengoba izinto zokusetshenziswa zishintshashintsha kakhulu ngesikhathi sokukhiqiza kunangesikhathi sokuhlolwa, ukuze kusetshenziswe kangcono ukusebenza kwemikhiqizo ye-polycarboxylate superplasticizer, izingxube kufanele zilungiswe ngesikhathi ngokuhambisana nomthelela wezimo zempahla eluhlaza, ukushintsha kwezinga lokushisa elizungezile, njll. ukhonkolo ngesikhathi sokukhiqiza. Isikali.

11. Ama-agent okunciphisa amanzi e-Polycarboxylic acid awakwazi ukuhlanganiswa nama-agent asekelwe ku-naphthalene okunciphisa amanzi. Uma usebenzisa i-polycarboxylic acid enciphisa amanzi, i-mixer neloli ye-mixer esebenzise ama-ejenti anciphisa amanzi e-naphthalene kufanele iwashwe ihlanzeke, ngaphandle kwalokho i-ejenti yokunciphisa amanzi ye-polycarboxylic ingase yonakaliswe. I-ejenti yokunciphisa amanzi ilahlekelwa umphumela wayo wokunciphisa amanzi.

12. I-polycarboxylate superplasticizer kufanele igweme ukuthintana isikhathi eside nezinto zensimbi. Njengoba imikhiqizo ye-ejenti yokunciphisa amanzi ye-polycarboxylate ivamise ukuba ne-asidi, ukuthintana kwesikhathi eside nemikhiqizo yensimbi kuzodala ukusabela kancane, okungase kube mnyama noma kube mnyama umbala, okuholela ekwehleni kokusebenza komkhiqizo. Kunconywa ukusebenzisa amabhakede epulasitiki e-polyethylene noma amabhakede ensimbi engagqwali ukuze ugcinwe ukuze uqinisekise ukuzinza kokusebenza.