Umhla wokuThumela:19,Dec,2022

Superplasticizers inokunciphisa umthamo wamanzi asetyenziselwa ukuxuba i-concrete ubuncinane nge-10%, okanye inyuse kakhulu izinga lokuhamba kwekhonkrithi. Ngekhonkrithi eneminyaka engama-3 ubudala, amandla e-砼C30 anokunyuswa nge-69 mpa, kwaye amandla ekhonkrithi kwiintsuku ze-28 ubudala anyuswe ubuncinane kwi-87 mpa. Isetyenziswa ngokuqhelekileyosuperplasticizersikakhulu i-polyalkyl aryl sulfonates kunye ne-melamine yokunciphisa amanzi.

Iziphumo zesuperplasticizers kwindlela yokusebenza ebonakalayo ikakhulu ngolu hlobo lulandelayo:

1. Ngokubhekiselele kwiipropati zekhonkrithi esanda kuxutywa. Kwisiphumo sokunciphisa amanzi se-superplasticizer, ubungakanani bemolekyuli kunye nohlobo oluthile lwesakhiwo se-agent yokunciphisa amanzi esetyenzisiweyo kufuneka kuqwalaselwe. Umphumo womoya wegazi we-arhente yokunciphisa amanzi uchaphazeleka ngoxinzelelo oluphezulu lwesisombululo samanzi. Okukhona ukuncipha komthamo woxinzelelo kumphezulu, kokukhona kucaca ngakumbi isiphumo somoya esophayo. Ngokwexesha lokumisela ikhonkrithi, i-naphthalene kunye ne-melamine inokuqhubela phambili ixesha lokudibanisa ikhonkrithi, kwaye i-sulfamate superplasticizer inokucothisa ixesha lokumisela. Nangona i-superplasticizer ayinakulungelelaniswa neesamente ezahlukeneyo, ukusetyenziswa kwesuperplasticizers kunokunciphisa ulwahlulo kunye neziganeko zokopha. I-slump yekhonkrithi ingaphuculwa ngokongezwa kwe-superplasticizer. Ixesha elithile lokuthotywa kunye nobungakanani bumiselwa ngokukodwa ziiparamitha ezinjengodidi kunye nobungakanani bearhente yokunciphisa amanzi esetyenzisiweyo.

2. Umphumo kwiipropati zokuqina kwekhonkrithi. I-samente ebandakanya i-superplasticizer inokuphucula iqondo lokumanzisa. Ukunyanzeliswa kwekhonkrithi kunye namandla okugoba kuphuculwe.Superplasticizers kwakhona ukunciphisa umthamo wesamente ngokuguqula ixabiso le-shrinkage lekhonkrithi. Nangona kunjalo, utshintsho kwixabiso le-telescopic ngokubanzi aludluli ixabiso eliqhelekileyo le-1X10-4.

3. Impembelelo ekuqina kwekhonkrithi. I-agent ephezulu yokunciphisa amanzi ngokufanelekileyo

iphucula iipropathi zokunqanda umkhenkce kunye nokunyibilika kwekhonkrithi ngenxa yezinga eliphezulu lokunciphisa amanzi kunye nomkhondo womoya owophayo. Kwaye ukuncitshiswa kwamanzi okusebenzayo okuphezulu kunokuphucula ngokufanelekileyo amandla ekhonkrithi ukuxhathisa ukubola kwe-asidi ye-sulfuric. Iimvavanyo zibonise ukuba ukuchasana ne-sulfuric acid corrosion ye-superplasticizer ayibi kakhulu kunekhonkrithi engenanto.

4. Impembelelo yokukhusela i-anti-corrosion yeentsimbi zetsimbi. Ikhonkrithi ene-high-effect-efficiency reducer yamanzi inokubambisana kakuhle kunye nemivalo yensimbi, kunye nokunamathela kwentsimbi echanekileyo yesilayidi kwi-concrete ye-7D inokuphuculwa ukusuka kwi-1.2MPA ukuya kwi-8.5MPA. Ukunamathela kwentsimbi egobileyo kwi-concrete 7D kunokunyuswa ukusuka kwi-15MPA ukuya kwi-27.5MPA. I-superplasticizer inokukhusela ngokufanelekileyo intsimbi kwikhonkrithi.