Cellulose ether chinhu chinowanzo shandiswa muzvinhu zvekuvaka, chinoshandiswa kuwedzera mashandiro ekuvaka uye hunhu hwemakanika edhaka. Kupfava ndechimwe chezvinhu zvakakosha zvecellulose ether, zvinoreva kupararira kwayo kwehukuru hwezvidimbu.
Hunhu uye mashandisirwo e cellulose ether
Cellulose ether inonyanya kusanganisira hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC), nezvimwewo. Mabasa avo makuru mukuvaka dhaka anosanganisira:
Kuchengetwa kwemvura: nekuderedza kupwa kwemvura, kuwedzera nguva yekunyoroveswa kwesimende, uye kuwedzera simba redhaka.
Kukora: Wedzera kusimba kwedhaka uye kuvandudza mashandiro ekuvaka.
Kuvandudza kusimba kwekuputika: Hunhu hwekuchengetedza mvura hwe cellulose ether hunobatsira kudzora kupwanyika kwesimende, nokudaro zvichideredza kupwanyika kwekuputika mudhaka.
Kupfava kwe cellulose ether kunokanganisa kupararira kwayo, kunyungudika kwayo uye kushanda kwayo zvakanaka mudura, nokudaro zvichikanganisa mashandiro ese edura.
Mhedzisiro yekusimba kwe ether ye cellulose pakuvaka dhaka inogona kuongororwa kubva pane zvinotevera:
1. Mwero wekunyungudika uye kupararira
Mwero wekunyungudika kwe cellulose ether mumvura wakabatana zvikuru nekupfava kwayo. Zvidimbu zve cellulose ether zvine kupfava kwakanyanya zvinonyungudika nyore nyore mumvura, nokudaro zvichiita kuti zvive zvakafanana nekukurumidza. Kupararira uku kwakafanana kunogona kuona kuti mvura inochengetwa zvakanaka uye inokora mu mortar system yese, kukurudzira kufambira mberi kwakafanana kwe hydration ye simende, uye kuvandudza simba rekutanga remortar.
2. Kugona kuchengetedza mvura
Kupfava kwe cellulose ether kunokanganisa mashandiro ayo ekuchengetedza mvura. Zvidimbu zve cellulose ether zvine kupfava kwakanyanya zvinopa nzvimbo yakakura yepamusoro, nokudaro zvichigadzira zvivakwa zvakawanda zvinochengetedza mvura mumortar. Ma micropores aya anogona kuchengetedza mvura zvinobudirira, kuwedzera nguva yekuita kwe hydration ye simende, kukurudzira kuumbwa kwezvigadzirwa zve hydration, uye nokudaro kuwedzera simba remortar.
3. Kubatana kweinterface
Nekuda kwekupararira kwadzo zvakanaka, zvidimbu zve cellulose ether zvine hutete hwakanyanya zvinogona kuumba jira rekubatanidza rakafanana pakati pe dhaka ne aggregate, uye kuvandudza kubatana kwedhaka. Izvi zvinobatsira dhaka kuchengetedza plasticity yakanaka pakutanga, kuderedza kuitika kwekutsemuka kwe shrinkage, uye nokudaro kuvandudza simba rose.
4. Kukurudzirwa kwemvura inonyungudika nesimende
Munguva yekunyorovesa simende, kugadzirwa kwezvigadzirwa zvekunyorovesa kunoda huwandu hwakati hwemvura. Cellulose ether ine hunyoro hwakanyanya inogona kugadzira mamiriro akafanana ekunyorovesa mudhaka, kudzivirira dambudziko rekusakwana kana kuwanda kwehunyoro hwemunharaunda, kuve nechokwadi chekufambira mberi kwakazara kwekuita kwemvura, uye nokudaro kuvandudza kusimba kwedhaka.
Chidzidzo chekuedza uye ongororo yemhedzisiro
Kuti vaone kuti kusimba kwe cellulose ether musimbi kunoenderana here nekushanda kwemortar, dzimwe ongororo dzakaongorora kusimba kwe cellulose ether uye dzakaedza hunhu hwayo hwemortar musimbi dzakasiyana.
Dhizaini yekuedza
Kuedza uku kunowanzo shandisa sampuli dze cellulose ether dzine hutete hwakasiyana uye dzinodziisa mu cement mortar zvakateerana. Nekudzora zvimwe zvinhu (zvakadai se water-cement ratio, aggregate ratio, mixing time, nezvimwewo), hutete hwe cellulose ether hunongochinjwa chete. Miedzo yesimba yakatevedzana, kusanganisira compressive strength uye flexural strength, inozoitwa.
Mhedzisiro yekuyedza inowanzoratidza:
Samples dze cellulose ether dzine hutete hwakanyanya dzinogona kuvandudza simba rekudzvanya uye simba rekuchinjika kwedhaka pakutanga (senge mazuva matatu nemazuva manomwe).
Nekuwedzera kwenguva yekupisa (senge mazuva makumi maviri nemasere), cellulose ether ine hunyoro hwakanyanya inogona kuramba ichipa mvura yakanaka uye kubatana, ichiratidza kukura kwakasimba kwesimba.
Semuenzaniso, mukuyedza, simba rekudzvanya rema cellulose ethers ane hunyoro hwema mesh 80, mesh 100, uye mesh 120 mumazuva 28 raive 25 MPa, 28 MPa, uye 30 MPa, zvichiteerana. Izvi zvinoratidza kuti hunyoro hwe cellulose ether hwakakwira, simba rekudzvanya remortar rinokura.
Kushandiswa kwakanaka kwekugadzirisa kunaka kwe ether ye cellulose
1. Gadzirisa zvinoenderana nemamiriro ekuvaka
Pakuvaka munzvimbo yakaoma kana pasi pemamiriro ekupisa kwakanyanya, cellulose ether ine hunyoro hwakanyanya inogona kusarudzwa kuti iwedzere kuchengetedza mvura mudhaka uye kuderedza kurasikirwa kwesimba kunokonzerwa nekubuda kwemvura.
2. Shandisa pamwe chete nezvimwe zvinowedzerwa
Cellulose ether ine hunyoro hwakanyanya inogona kushandiswa pamwe chete nezvimwe zvinowedzerwa (zvakaita sezvinoderedza mvura uye zvinopinza mweya) kuti zviwedzere kushanda zvakanaka kwedhaka. Semuenzaniso, kushandiswa kwezvinoderedza mvura kunogona kuderedza chiyero chemvura nesimende uye kuwedzera huwandu hwedhaka, nepo cellulose ether ichipa kuchengetedza mvura uye kusimbisa simba. Kusanganiswa kwezviviri izvi kunogona kuvandudza zvakanyanya simba redhaka.
3. Kugadzirisa maitiro ekuvaka
Munguva yekuvaka, zvakakosha kuve nechokwadi chekuti cellulose ether yakanyungudutswa zvizere uye yakapararira. Izvi zvinogona kuitwa nekuwedzera nguva yekusanganisa kana kushandisa michina yakakodzera yekusanganisa kuti ive nechokwadi chekuti kunaka kwe cellulose ether kwashandiswa zvizere.
Kupfava kwe cellulose ether kune simba guru pakusimba kwemortar. Cellulose ether ine kupfava kwakanyanya inogona kuita basa rekuchengetedza mvura, kukora uye kuvandudza kubatana kweinterface, uye kuvandudza simba rekutanga uye hunhu hwemakanika hwemortar kwenguva refu. Mukushandiswa kwakakodzera, kupfava kwe cellulose ether kunofanirwa kusarudzwa zvine musoro uye kushandiswa zvichienderana nemamiriro chaiwo ekuvaka uye zvinodiwa kuti zvivandudze mashandiro emortar uye kuvandudza mhando yeprojekiti.
Nguva yekutumira: Chikumi-24-2024