5. Iingxaki kunye ne-dosage ye-polycarboxylate yokunciphisa amanzi

Idosi ye-ejenti yokunciphisa amanzi ye-polycarboxylate iphantsi, izinga lokunciphisa amanzi liphezulu, kwaye i-slump igcinwe kakuhle, kodwa ezi ngxaki zilandelayo ziyenzeka kwisicelo:

① Idosi inovakalelo kakhulu xa umlinganiselo wamanzi ukuya kwisamente umncinci, kwaye ubonisa izinga eliphezulu lokunciphisa amanzi. Nangona kunjalo, xa umlinganiselo wamanzi ukuya kwi-samente mkhulu (ngaphezu kwe-0.4), izinga lokunciphisa amanzi kunye noshintsho lwalo alubonakali kangako, olunokuthi ludibaniswe ne-polycarboxylic acid. Indlela yokusebenza ye-agent esekelwe kwi-asidi yokunciphisa amanzi ihambelana nokusabalalisa kwayo kunye nokugcinwa kwayo ngenxa yempembelelo yokuthintela i-steric eyenziwe yi-molecular structure. Xa umlinganiselo we-binder wamanzi umkhulu, kukho isithuba esaneleyo phakathi kweeamolekyu zamanzi kwi-sement dispersion system, ngoko ke isithuba phakathi kwe-polycarboxylic acid molecules I-steric hindrance effect incinci ngokwendalo.

② Xa ubuninzi bezinto ze-cementitious zikhulu, impembelelo yedosi ibonakala ngakumbi. Ngaphantsi kweemeko ezifanayo, umphumo wokunciphisa amanzi xa inani elipheleleyo le-cementitious material <300kg / m3 lincinci kunomlinganiselo wokunciphisa amanzi xa inani elipheleleyo le-cementitious material> 400kg / m3. Ngaphezu koko, xa umlinganiselo wamanzi-samente umkhulu kwaye ubuninzi bezinto ze-cementitious zincinci, kuya kuba nempembelelo ephezulu.

I-Polycarboxylate superplasticizer iphuhliswe kwikhonkrithi ephezulu yokusebenza, ngoko ukusebenza kwayo kunye nexabiso lifaneleke ngakumbi kwikhonkrithi ephezulu.

6. Ngokumalunga nokudityaniswa kwee-agent ze-polycarboxylic acid zokunciphisa amanzi

Iipolycarboxylate zokunciphisa amanzi azikwazi ukudibanisa kunye ne-naphthalene-based based-reduction agents. Ukuba ii-agent ezimbini zokunciphisa amanzi zisetyenziswe kwisixhobo esifanayo, ziya kuba nefuthe ukuba azihlambulukanga ngokucokisekileyo. Ke ngoko, kudla ngokufuneka ukuba kusetyenziswe isethi eyahlukileyo yezixhobo zokunciphisa amanzi esekwe kwi-polycarboxylic acid.

Ngokwemeko yokusetyenziswa kwangoku, ukuhambelana komkhompompi wearhente yokungenisa umoya kunye nepolycarboxylate kulungile. Isizathu esona sizathu kukuba inani le-ejenti yokungenisa umoya liphantsi, kwaye "inokuhambelana" kunye ne-polycarboxylic acid-based based-agent-agent agent ukuze ihambelane ngakumbi. , ehambelanayo. Isodium gluconate kwiretarder nayo inokuhambelana kakuhle, kodwa ayihambelani kakuhle nezinye izongezo zetyuwa ezingaphiliyo kwaye kunzima ukuzidibanisa.

7. Ngokumalunga nexabiso le-PH ye-polycarboxylic acid yokunciphisa amanzi

Ixabiso le-pH le-polycarxylicciclic acid-esekwe emanzini liphantsi kunelinye lamanzi aphezulu okunciphisa amanzi aphezulu, ezinye zazo ziyi-6-7 kuphela. Ngoko ke, kufuneka zigcinwe kwi-fiberglass, iplastiki kunye nezinye izitya, kwaye azikwazi ukugcinwa kwiibhotile zentsimbi ixesha elide. Kuya kubangela ukuba i-agent ye-polycarboxylate yokunciphisa amanzi ihlambuluke, kwaye emva kokubola kwexesha elide le-asidi, iya kuchaphazela ubomi besitya sesinyithi kunye nokhuseleko lwenkqubo yokugcina kunye nokuthutha.