Hnub Kawg: 18 Kaum Ib Hlis, 2024
4. Qhov teeb meem ntawm qeeb ntxov zog kev loj hlob ntawm pob zeb
Nrog rau kev nce qib sai ntawm thaj chaw industrialization hauv kuv lub tebchaws, qhov kev thov rau precast qhob Cheebtsam yog loj hlob. Yog li ntawd, kev txhim kho lub zog thaum ntxov ntawm cov pob zeb ua kom nrawm nrawm ntawm cov pwm hloov pauv, yog li txhim kho kev tsim khoom ntawm precast qhob Cheebtsam. Kev siv PCE los npaj cov khoom sib xyaw ua ke tuaj yeem txhim kho qhov zoo ntawm cov khoom, thiab vim yog qhov zoo tshaj plaws dispersibility ntawm PCE, nws siv nyob rau hauv zus tau tej cov high-strength precast Cheebtsam yuav muab tag nrho kev ua si rau nws dual zoo nyob rau hauv kev ua tau zoo thiab nqi. , yog li nws muaj dav daim ntawv thov kev cia siab.
5. Qhov teeb meem ntawm huab cua loj hauv cov pob zeb sib xyaw nrog PCE
Raws li ib tug surfactant, lub hydrophilic sab chains nyob rau hauv lub molecular qauv ntawm PCE muaj tsis tshua muaj zog cua nkag. Ntawd yog, PCE yuav txo qhov nro ntawm cov dej sib tov, ua kom yooj yim rau cov pob zeb ua kom paub thiab tsim cov npuas tsis sib xws thiab yooj yim rau kev sib sau thaum lub sijhawm sib xyaw. Yog tias cov npuas no tsis tuaj yeem tawm hauv lub sijhawm, lawv yuav cuam tshuam rau qhov zoo ntawm cov pob zeb thiab txawm tias ua rau muaj kev puas tsuaj rau lub zog ntawm cov pob zeb, yog li lawv yuav tsum tau saib xyuas txaus.
6. Qhov teeb meem ntawm kev ua haujlwm tsis zoo ntawm cov pob zeb tshiab
Cov khoom ua haujlwm ntawm cov pob zeb tshiab muaj xws li fluidity, cohesion thiab dej tuav. Fluidity yog hais txog lub peev xwm ntawm cov pob zeb sib xyaw kom ntws thiab sau cov formwork sib npaug thiab ntom ntom nyob rau hauv qhov kev txiav txim ntawm nws tus kheej qhov hnyav lossis kev vibration. Cohesion yog hais txog kev sib koom ua ke ntawm cov khoom sib xyaw ua ke, uas tuaj yeem zam kev sib cais thiab sib cais thaum lub sijhawm tsim kho. Kev tuav dej yog hais txog lub peev xwm ntawm cov pob zeb sib xyaw kom khaws cov dej, uas tuaj yeem tsis txhob los ntshav thaum lub sijhawm tsim kho. Hauv kev npaj tiag tiag ntawm pob zeb, ntawm ib sab, rau cov pob zeb uas muaj zog tsawg, cov khoom siv cementitious tsis siab thiab cov dej-binder ratio yog loj. Tsis tas li ntawd, kev sib sau ua ke ntawm cov pob zeb zoo li no feem ntau tsis zoo. Kev siv PCE nrog cov dej txo qis los npaj cov pob zeb zoo li no yog qhov ua rau muaj kev sib cais thiab los ntshav ntawm qhov sib tov; Ntawm qhov tod tes, cov pob zeb ua haujlwm siab tau npaj los ntawm kev siv lub zog qis qis, ua kom cov khoom siv cementitious thiab txo cov dej-binder piv yog qhov ua kom muaj viscosity siab, tsis zoo sib xyaw fluidity thiab qis qis. Yog li ntawd, tsawg dhau los yog siab viscosity ntawm cov pob zeb sib tov yuav ua rau cov pob zeb ua haujlwm tsis zoo, txo kev tsim kho kom zoo, thiab ua rau tsis zoo rau cov cuab yeej cuab tam thiab ua haujlwm ntawm cov pob zeb.
Post lub sij hawm: Nov-19-2024
