Hnub Tim: 27, Jun, 2022
4. Retarder
Retarders tau muab faib ua cov organic retarders thiab inorganic retarders. Feem ntau ntawm cov organic retarders muaj dej txo cov nyhuv dej, yog li lawv tseem hu ua cov retarders thiab reducers. Tam sim no, peb feem ntau siv organic retarders. Organic retarders feem ntau maj mam ua kom qeeb ntawm C3A, thiab Lignosulfonates kuj tseem tuaj yeem ncua lub qhov dej ntawm c4af. Cov qoob loo sib txawv ntawm Lamposulfonates yuav nthuav tawm cov khoom sib txawv thiab qee zaum ua rau muaj kev tsis tseeb ntawm cov cement.
Cov teeb meem hauv qab no yuav tsum tau them sai sai thaum siv Retarder hauv kev lag luam pob zeb:
A. Ua tib zoo saib xyuas kom haum nrog cov khoom noj kom zoo nkauj thiab lwm yam tshuaj admixtures.
B. Ua tib zoo saib xyuas qhov ntsuas kub nyob ib puag ncig
C. Ua tib zoo saib kev tsim kho thiab kev thauj mus los deb
D. Ua tib zoo mloog rau qhov yuav tsum tau ua ntawm txoj haujlwm
E. Kev saib xyuas yuav tsum tau them nyiaj rau kev saib xyuas thaum
Cov teeb meem hauv qab no yuav tsum tau them sai sai thaum siv Retarder hauv kev lag luam pob zeb:
A. Ua tib zoo saib xyuas kom haum nrog cov khoom noj kom zoo nkauj thiab lwm yam tshuaj admixtures.
B. Ua tib zoo saib xyuas qhov ntsuas kub nyob ib puag ncig
C. Ua tib zoo saib kev tsim kho thiab kev thauj mus los deb
D. Ua tib zoo mloog rau qhov yuav tsum tau ua ntawm txoj haujlwm
E. Kev saib xyuas yuav tsum tau them nyiaj rau kev saib xyuas thaum
Surium sulfate yog hmoov dawb, thiab cov tshuaj haum zoo yog 0.5% rau 2.0%; Lub zog thaum ntxov ua yog tsis zoo li ntawm CACL2. Lub zog thaum ntxov ntawm sluag Caas pob zeb ua yog qhov tseem ceeb dua, tab sis lub zog tom qab tsawg me ntsis. Qhov ntau npaum li cas ntawm sodium sulium sulfate tus neeg sawv cev ntxov hauv prestine countressed qauv yuav tsum tsis pub dhau 1%; Cov tshuaj ntawm cov khoom siv hluav taws xob txhawb zog hauv cov qauv hauv cov chaw noo noo yuav tsum tsis pub tshaj 1.5%; Qhov ntau npaum li cas noj yuav tsum tau nruj me ntsis.
Deterioration; "Hoarfrost" ntawm cov qhob saum npoo, cuam tshuam cov tsos thiab ua tiav. Ib qho ntxiv, sodium sulfate cov neeg sawv cev ntxov yuav tsis siv hauv cov phiaj xwm hauv qab no:
a. Cov qauv sib chwv nrog galvanized steel los yog cov hlau hlau thiab cov qauv sib txawv nrog cov hlau nplaum qhov chaw tsis muaj kev tiv thaiv.
b. Siv zog ua pob zeb ua vaj tse ntawm cov teeb meem thiab cov chaw thauj hluav taws xob siv DC lub zog.
c. Qhob lug muaj cov qauv sib xyaw ua ke.
Lub Sijhawm Post: Jun-27-2022
