Impembelelo ye-cellulose ether kwiipropati zekhonkrithi

I-cellulose ethers yiklasi ye-organic polymer compounds esetyenziswa ngokubanzi kwizinto zokwakha, ngakumbi kwikhonkrithi kunye nodaka. Njengesongezo, i-cellulose ether inempembelelo ebalulekileyo kwiipropati ezininzi zekhonkrithi, kubandakanywa nokusebenza, ukugcinwa kwamanzi, amandla, iipropati zokubambisana, njl.

1. Impembelelo ekusebenzeni

I-cellulose ethers inokuphucula kakhulu ukusebenza kwekhonkrithi, ngakumbi ngexesha lokuxuba kunye nokwakhiwa. I-ether ye-cellulose inefuthe elihle lokuqina kwaye inokunyusa i-viscosity kunye ne-rheology yekhonkrithi, okwenza kube lula ukusebenza kunye nokumila. Lo msebenzi ubaluleke kakhulu kwiindlela zokwakha ezifuna ukumanzi okuphezulu, okufana nekhonkrithi emponsiweyo kunye ne-shotcrete.

I-ether ye-cellulose inokuphucula i-lubricity yekhonkrithi kunye nokunciphisa ukungqubuzana phakathi kweengqungquthela ngexesha lenkqubo yokuxuba, ngaloo ndlela iphucula ukufana kunye nokusebenza kwekhonkrithi. Oku kunceda ikhonkrithi ifezekiseke ngcono ukubunjwa kunye nokugqiba umphezulu ngexesha lokwakha.

2. Impembelelo ekugcinweni kwamanzi

I-ether ye-cellulose inamandla okugcina amanzi kunye nesakhiwo sayo se-molecular iqulethe inani elikhulu lamaqela e-hydrophilic, anokuthi athathe ngokufanelekileyo kwaye agcine umswakama. Olu phawu luvumela i-cellulose ethers ukuba iphucule kakhulu ukugcinwa kwamanzi kwikhonkrithi, ngakumbi kwiindawo ezomileyo okanye ukwakhiwa kwe-thin-layer. I-cellulose ethers inokunciphisa ukuguquka kwamanzi ngokukhawuleza kwaye igweme iintanda kunye nokunciphisa amandla okubangelwa ukulahleka kwamanzi kwangaphambili kwikhonkrithi. .

Ngokwandisa ukugcinwa kwamanzi kwikhonkrithi, i-ether ye-cellulose inokwandisa ixesha lokuphendula i-samente, ivumela ukuba iinqununu ze-samente zibe ne-hydrated ngokupheleleyo, ngaloo ndlela iphucula amandla kunye nokuqina kwekhonkrithi. Ngokukodwa phantsi kweemeko zokwakha ezomileyo, ezifana nokwakhiwa kwehlobo okanye iindawo eziphakamileyo zokushisa, ukugcinwa kwamanzi kwe-cellulose ether kudlala indima ebalulekileyo ekusebenzeni kokugqibela kwekhonkrithi.

3. Impembelelo kumandla

I-ether ye-cellulose inempembelelo ethile ekuphuhliseni amandla ekhonkrithi, ngakumbi kumandla okuqala. Ekubeni i-cellulose ether iphucula ukugcinwa kwamanzi kwikhonkrithi, i-hydration reaction ye-cement particles iphelele ngakumbi, kwaye inani leemveliso ze-hydration zakuqala zanda, ngaloo ndlela ziphucula amandla okuqala ekhonkrithi. Ngelo xesha, i-cellulose ether inokuphucula kwakhona amandla ekhonkrithi kamva ngokuphucula ukufana kwesakhiwo sayo sangaphakathi.

Kufuneka kuqatshelwe ukuba idosi ye-cellulose ether kufuneka ifaneleke. Ukuba i-dosage inkulu kakhulu, nangona ukugcinwa kwamanzi kunye ne-rheology kuphuculwe, kunokuchaphazela amandla okugqibela ekhonkrithi, ngakumbi amandla kamva. Oku kungenxa yokuba i-ether yeselulosi engaphezulu inokuthintela ukuhanjiswa okuthe kratya kwamasuntswana esamente kwaye kunciphise ukuphucuka kwamandla abo kamva.

4. Impembelelo kwi-shrinkage kunye nokuqhekeka kwekhonkrithi

I-ether ye-cellulose inokunciphisa ngokufanelekileyo i-deformation ye-shrinkage yokuqala eyomileyo kunye ne-shrinkage cracks yekhonkrithi ngokuphucula ukugcinwa kwamanzi kwikhonkrithi. Ukuqhekeka kweentanda ngokuqhelekileyo kubangelwa kukugxininiswa koxinzelelo ngaphakathi kwekhonkrithi okubangelwa ukuphuphuma okugqithisileyo kwamanzi. Ukugcinwa kwamanzi e-cellulose ether kunokunciphisa le nkqubo, ukuvumela ikhonkrithi ukuba igcine imeko efumileyo ixesha elide kwindawo eyomileyo, ngaloo ndlela ngokufanelekileyo Ukunciphisa ukuvela kweentanda.

Umphumo wokuqina we-cellulose ether kwikhonkrithi unokuphucula amandla okubambisana kwekhonkrithi, ukwandisa ukudibanisa kunye nokunyaniseka kwesakhiwo sayo sangaphakathi, kunye nokunciphisa ngakumbi umngcipheko wokuqhekeka. Le propati inezicelo ezibalulekileyo kwikhonkrithi eninzi, udaka oluncinci okanye izinto ezisekelwe kwisamente.

5. Impembelelo ekuqina kwekhonkrithi

I-cellulose ethers ikhuthaza ukuqina kwekhonkrithi ngeendlela ezininzi. Okokuqala, i-cellulose ethers inokuphucula ukuxhathisa iqabaka kunye nokumelana nokukhukuliseka kwetyuwa kwikhonkrithi. Ngenxa yokuba i-cellulose ether inokunciphisa i-capillary pores ngaphakathi kwekhonkrithi kunye nokunciphisa indlela yokungena kwamanzi, ikhonkrithi ixhathisa ngakumbi ukuhlaselwa kwangaphandle kwiindawo ezibandayo okanye kwiindawo ezinetyuwa.

I-cellulose ethers iphucula ukuxinana kunye nokumelana nokuqhekeka kwekhonkrithi ngokuphucula ukugcinwa kwamanzi kunye nophuhliso lwamandla. Ezi zakhiwo ziluncedo kakhulu kubomi benkonzo yexesha elide lekhonkrithi, ngakumbi kwiibhulorho, iitonela kunye nezinye iiprojekthi ezichatshazelwa kakhulu kukukhukuliseka kwendalo. Ukongezwa kwe-cellulose ether kunokuphucula ukuqina kwekhonkrithi.

6. Impembelelo kwiipropati zokudibanisa eziphathekayo

I-ethers ye-cellulose nayo inefuthe elihle kwiipropati zokubambisana kwekhonkrithi, ngokukodwa kumandla okudibanisa phakathi kodaka kunye nomgangatho wesiseko. Ngenxa yokuba i-cellulose ether inokunyusa i-viscosity yekhonkrithi, kulula ukudibana ngokusondeleyo kunye nezixhobo ezisisiseko ngexesha lokwakha, ngaloo ndlela uphucula ukusebenza kokubambisana kwezi zibini. Olu phawu lubaluleke kakhulu kwizicelo ezifana nokutyabeka eludongeni kunye neeprojekthi zokulungisa ezifuna ukunamathela okuphezulu.

Njengomxube osebenza kakuhle, i-cellulose ether inefuthe elihle ekusebenzeni, ukugcinwa kwamanzi, amandla, ukuqhekeka kwe-shrinkage kunye nokuqina kwekhonkrithi. Ngokongeza isixa esifanelekileyo se-cellulose ether, ukusebenza ngokubanzi kwekhonkrithi kunokuphuculwa ngokufanelekileyo ukuhlangabezana neemfuno zeemeko ezahlukeneyo zokwakha ezizodwa. Nangona kunjalo, idosi ye-cellulose ether kufuneka ilawulwe ngokufanelekileyo ngokusekelwe kwiimfuno zobunjineli bokwenyani ukunqanda ukusetyenziswa okugqithisileyo okunokukhokelela ekunciphiseni amandla okanye ezinye iziphumo ezibi.