Umhla wokuPoswa:4,Disemba,2023

Ziziphi iimpawu zePCE-based admixtures?

Iimpawu eziphezulu zokunciphisa amanzi:PCE-based imixube ukunceda ukunciphisa amanzi ngokuvumela ikhonkrithi ukuba igcine ukusebenza kwayo ngelixa inciphisa ukusetyenziswa kwamanzi. Oku kufezwa ngokusebenzisa ulwakhiwo oluphezulu kancinci lwesamente kunye nezinye izixube ukwenza umxube oxineneyo.

PCE superplasticizers ziqhele ukusetyenziswa kwizicelo zekhonkrithi ezilungele ukuxuba apho ukusebenza okuphezulu kunye nokuqina kuyadingeka.

Ukuchasana okuphezulu: Iimpawu zokumelana ne-admixture zivumela ikhonkrithi ukuba imelane nokuhlaselwa kwesulfate, umonakalo owenziwe ngumkhenkce kunye nokuphendula kwe-alkali-silica.

Ukugcinwa kweSlump: Njengomxube osebenzayo wokunciphisa amanzi,PCE umxube inokunceda ukunciphisa umthamo wamanzi ofunekayo ukuphumeza ukuthotywa okunikiweyo ngokuphucula ukusebenza komxube wekhonkrithi. Oku kudla ngokufezekiswa ngokunciphisa umlinganiselo wamanzi-samente kunye nokwandisa ukusabalalisa ubungakanani bamasuntswana. Ngoko ke, oku kunceda ukukhusela amanzi amaninzi ngexesha lokuxuba, oku kunokukhokelela ekulahlekeni kwe-slump.

Izinto ezilungileyo zePCE-Isekwe Umxube:

Ukusebenza okuphuculweyo:PCE-based imixube bonelela ngemixube yekonkrithi esebenzayo ngakumbi ngamandla aphezulu kunye nokusebenza okukhawulezileyo ngaphandle kokubeka esichengeni iipropati zokumisela. Kwakhona kwandisa ukusebenza kwekhonkrithi entsha, okwenza kube lula ukumpompa kunye nokubeka.

 Ukunciphisa ukunyanzeliswa: I-Admixtures inokunciphisa ukunyanzeliswa kwekhonkrithi, ngaloo ndlela inciphisa umngcipheko wokungena kwamanzi kwikhonkrithi.

 Imixube yekhonkrithi ekumgangatho ophezulu: I-perchlorethylene-based admixtures ibangela imixube egqwesileyo yekhonkrithi kunye nokuphuculwa kwesamente kunye neempawu zokugalela. Oku kuphucula amandla kunye nomgangatho wekhonkrithi.

 Ukunciphisa i-shrinkage: I-concrete admixtures inokunciphisa i-shrinkage yekhonkrithi, enceda ukunciphisa umngcipheko wokuqhekeka kunye nomnye umonakalo. Ezi zixube zibonelela ngomxube wekhonkrithi kunye nenkqubo yangaphakathi yokunyanga. Ubukho be-polycarboxylate ethers buvumela i-admixture ukuba ifunxe kwaye igcine amanzi kumxube wekhonkrithi.

 Ukugqiba okuphuculweyo:PCE-based imixube inokuphucula ukugqitywa kwekhonkrithi, iyenze ibe lula, ithandeke ngakumbi kwaye ibe nomphezulu ongaguqukiyo. Ukugqitywa okuphuculweyo kunceda ukwandisa ukuqina kwendawo yekhonkrithi. Lo mxube ukwabonelela ngoyilo lomxube ofanayo kwaye unciphisa ukuthambekela kokuqhekeka kwe-shrinkage. Ukongeza, kunokunceda ukunciphisa ukufunxwa kwamanzi kunye nokumisa ukuphuma kwamanzi.