Ukusetshenziswa kwe-Hydroxypropyl Methylcellulose (HPMC) ekwakheni i-Grouting

I-Hydroxypropyl Methylcellulose (HPMC)iyi-non-ionic cellulose ether, esetshenziswa kabanzi ezintweni zokwakha, ikakhulukazi ezintweni zokwakha ezisekelwe kusimende, okuye kwaheha ukunakwa okwengeziwe. Njengesengezo se-polymer esisebenza kahle kakhulu, i-HPMC ingathuthukisa kakhulu ukusebenza kokwakhiwa kanye nokusebenza kokugcina kwezinto zokwakha, ithuthukise ukugcinwa kwamanzi, ukugeleza, ukuhambisana kanye nokunamathela kwayo, ngaleyo ndlela iqinisekise ikhwalithi yokwakha kanye nokuphepha kobunjiniyela.

1. Incazelo kanye nezidingo zokusebenza kwe-grouting yesakhiwo

I-grouting yokwakha isetshenziswa kakhulu ukugcwalisa izikhala phakathi kwezingxenye zesakhiwo, ukulungisa izisekelo zemishini, ukulungisa amaphutha esakhiwo, ukuvala imifantu, njll. Izinto ezivamile ze-grouting zifaka izinto ze-grouting ezisekelwe kusimende, izinto ze-grouting ezinganciphi, izinto ze-grouting eziguqulwe nge-polymer, njll. Izidingo zayo zokusebenza zifaka phakathi:

Ukugeleza okuhle kanye nezakhiwo ezizigelezela ngokwazo, ukuze izinto zokuhlanganisa zikwazi ukugcwalisa kahle izikhala eziyinkimbinkimbi noma ezincane;

Ukugcinwa kwamanzi okuphezulu ukuvimbela ukushwabana kusenesikhathi kanye nokuqhekeka okubangelwa ukulahleka kwamanzi;

Ukunamathela okufanele kanye nokuthuthukiswa kwamandla ukuqinisekisa ukubopha okuqinile nesisekelo noma imigoqo yensimbi;

Ukumelana okuhle nokuqhekeka nokuqina ukuze kuhlangatshezwane nokuphepha kwesakhiwo kokusetshenziswa kwesikhathi eside.

Izinto zokugaya zendabuko zivame ukuba nokugeleza okungekuhle, ukuhlukaniswa kanye nokuphuma kwamanzi, ukushwabana kanye nokuqhekeka ekusetshenzisweni okungokoqobo, ngakho-ke kuyadingeka ukwethula izithasiselo ezithuthukisa ukusebenza-i-HPMC.

2. Izici zokusebenza ze-HPMC

I-HPMC iyi-ether ye-cellulose eguquliwe eyenziwe nge-cellulose yemvelo enama-molecule amaningi ngokusebenzisa ukusabela kwe-etherification, enezici ezilandelayo ezibalulekile:

2.1. Ukugcinwa kwamanzi okuhle kakhulu

I-HPMC ingagcina amanzi ngempumelelo ngesikhathi sokumuncwa kwesamente, ibambezele ukulahleka kwamanzi, iqinisekise ukumuncwa okuphelele kwesamente, ithuthukise amandla okuqala futhi inciphise ukuqhekeka.

2.2. Ukwanda kokugeleza kanye nokuthamba

Ukwengeza inani elifanele le-HPMC kungathuthukisa kakhulu ukugeleza kanye nokushelela kokwakhiwa kwezinto zokugaya, okwenza kube lula ukuthulula, ukugcwalisa nokudlidliza.

2.3. Ukungaguquguquki okuzinzile kanye nokulwa nokuhlukaniswa

I-HPMC yakha isakhiwo senethiwekhi ohlelweni lwe-grouting, iqinisa ukusatshalaliswa kwe-slurry, futhi ivimbela ukuna kwezinhlayiya, ukuhlukaniswa kanye nokuphuma kwamanzi.

2.4. Ukusebenza okuthuthukisiwe kokubopha

Izakhiwo zayo zokwakha ifilimu kanye nomphumela wokumanzisa ku-substrate kungathuthukisa ukubopha phakathi kwezinto zokugaya kanye nezindawo eziyisisekelo ezifana nokhonkolo, imigoqo yensimbi, kanye nokwakhiwa kwamatshe, futhi kuthuthukise ubuqotho besakhiwo.

2.5. Ukusebenza okuthuthukisiwe kokwakha kanye nesikhathi sokusebenza

I-HPMC inemiphumela emihle kakhulu yokugcina amanzi kanye nokulibazisa, okusiza ukwandisa isikhathi sokusebenza, ukuthuthukisa ukuguquguquka kokwakha, kanye nokuzivumelanisa nezimo zokwakha eziyinkimbinkimbi.

3. Umphumela wokusetshenziswa kwe-HPMC ekwakheni i-grouting

3.1. Ukusetshenziswa kwe-grouting yesisekelo semishini

Ukufaka isisekelo semishini kudinga amandla aphezulu, akukho ukuncibilika, kanye nokugeleza okuphezulu. Ngemva kokufaka i-HPMC, izinto zokufaka i-grouting zingagcina ukugeleza okuhle ngaphandle kokwandisa isilinganiso samanzi nosimende, zigweme ukopha nokuhlukaniswa, futhi ngesikhathi esifanayo zithuthukise ubuningi bokugcwalisa ukuqinisekisa ukuzinza kokusebenza kwesikhathi eside kwemishini.

3.2. Ukusetshenziswa kwe-grouting yokulungisa isakhiwo

Lapho kulungiswa imifantu ezakhiweni zekhonkrithi noma ezindaweni ezimbozwe uju, izinto zokugaya zidinga ukugcinwa kwamanzi amaningi kanye nokubopha okuphezulu. I-HPMC ithuthukisa ngempumelelo ukuhlangana kwezinto zokugaya kanye nokunamathela kwayo ebusweni besisekelo, ngenkathi ilawula ukuncibilika futhi igwema ukuqhekeka kwesibili.

3.3. Ukusetshenziswa kwe-grouting ye-duct ecindezelwe ngaphambili

Ukufakwa kwe-grout ecindezelwe kudinga ukuthi i-slurry ibe nokugeleza okuphezulu kanye nezakhiwo zokugcwalisa ukuvimbela imbobo ukuthi ishiywe ingenalutho kanye nentambo yensimbi ukuthi ibole. I-HPMC ingavimbela i-slurry ukuthi ihlale futhi ihlukanise, iqinisekise ukuthi i-slurry igcwele ngokuphelele, futhi ithuthukise ukuqina.

4. Izincomo zokusetshenziswa kwe-HPMC kufomula yokuhlanganisa

Uma usebenzisa i-HPMC ezintweni zokuhlanganisa, imodeli kanye nomthamo kufanele kukhethwe ngokufanele:

Ukukhetha imodeli: Khetha izinga le-viscosity elifanele (ngokuvamile 50,000~100,000 mPa·s) ngokwesilinganiso samanzi-usimende kanye nezidingo zokwakha zesistimu ye-grouting;

Inani lokwengeza: Ngokuvamile u-0.1% ~ 0.5% wesisindo sikasimende, okungathuthukiswa ngokuhlolwa ngokwezidingo ezithile;

Indlela yokwengeza: I-HPMC kufanele ihlakazwe ngokulinganayo engxubeni eyomile, bese kufakwa amanzi ukuze kuxutshwe futhi kuxutshwe ukuze kugwenywe ukuhlangana futhi kuthinte umphumela.

I-Hydroxypropyl methylcellulose (HPMC), njengesithako sokwakha esisebenza kahle kakhulu, idlala indima engenakuphindwa ekwakheni izinto zokubopha izinsimbi. Akugcini nje ngokuthuthukisa kakhulu ukusebenza kokwakhiwa kanye nezakhiwo zemishini zezinto zokubopha izinsimbi, kodwa futhi kuthuthukisa ikhwalithi yokubopha izinsimbi kanye nokuqina kobunjiniyela. Njengoba amaphrojekthi okwakha eqhubeka nokuthuthukisa izidingo zawo zokusebenza kahle kokwakha kanye nekhwalithi yezinto zokwakha, i-HPMC izosetshenziswa kabanzi futhi ithuthukiswe emkhakheni wezinto zokubopha izinsimbi kanye nezinye izinto zokwakha. Kubakhiqizi bezinto zokubopha izinsimbi, ukwazi ukusebenzisa ubuchwepheshe be-HPMC ngendlela efanele kuzoba esinye sezihluthulelo zokuthuthukisa ukuncintisana okuyinhloko kwemikhiqizo.