Hnub Kawg:27,Nov,2023

Retarder yog ib qho khoom siv feem ntau siv hauv kev tsim kho engineering. Nws lub luag haujlwm tseem ceeb yog txhawm rau ncua qhov tshwm sim ntawm qhov kub siab ntawm cov cement hydration, uas yog qhov zoo rau kev thauj mus los ntev, qhov kub thiab txias thiab lwm yam kev mob ntawm pob zeb, cement mortar thiab lwm yam khoom siv hauv tsev. Khaws plasticity nyob rau hauv tej yam kev mob, yog li kev txhim kho qhov zoo ntawm pob zeb pouring; thaum cuam tshuam los ntawm lwm yam xwm txheej tshwj xeeb xws li huab cua lossis kev tsim kho raws li lub sijhawm yuav tsum tau ua, ib qho retarder kuj yuav tsum tau ntxiv, uas tuaj yeem txhim kho kev ua haujlwm ntawm cov pob zeb ua haujlwm, txuas ntxiv lub sijhawm ntawm cement, thiab tseem txo cov kev tsim kho tawg. Yuav ua li cas xaiv hom thiab ntau npaum li cas ntawm retarder cuam tshuam rau kev ua tau zoo ntawm cement pob zeb yog ib lo lus nug tsim nyog ntawm kev kawm.

1.Effect on Clotting Time

Tom qab ntxiv retarder, lub sij hawm pib thiab zaum kawg ntawm cov pob zeb ua tau ntev heev. Cov retarders sib txawv muaj qhov sib txawv ntawm cov pob zeb teeb tsa lub sijhawm ntawm tib qhov ntau npaum li cas, thiab cov retarders sib txawv muaj qhov cuam tshuam sib txawv ntawm cov pob zeb. Ib tug zoo retarder yuav tsum muaj ib tug zoo retarding nyhuv thaum nws npaum li cas me me. Ib qho zoo tshaj plaws retarder yuav tsum ncua lub sij hawm pib ntawm kev ua vaj tse thiab txo lub sij hawm zaum kawg. Qhov ntawd yog hais tias, qhov pib thiab qhov kawg qhov chaw nruab nrab ntawm cov pob zeb yuav tsum tau luv kom ntau li ntau tau.

 2.Qhov cuam tshuam rau kev ua haujlwm ntawm qhov sib tov

Hauv kev xyaum ua engineering, txhawm rau hloov mus rau kev thauj mus los thiab ua tau raws li kev tsim kho, retarder feem ntau ntxiv rau cov pob zeb los txhim kho kev ua haujlwm ntawm cov pob zeb sib xyaw thiab txo qis kev poob thaum lub sijhawm. Qhov sib ntxiv ntawm retarder ho txhim kho cov uniformity thiab stability ntawm cov sib tov, tswj cov yas rau lub sij hawm ntev ntawm lub sij hawm, txhim kho qhov zoo ntawm cov pob zeb siv, thiab zoo tiv thaiv cov kab nrib pleb tshwm sim los ntawm thaum ntxov shrinkage ntawm pob zeb.

3.Effect ntawm pob zeb muaj zog

Qhov sib ntxiv ntawm retarder tuaj yeem ua kom muaj dej txaus rau cov cement hais, uas yog qhov zoo los ua kom muaj zog ntawm cov pob zeb hauv nruab nrab thiab theem nrab. Txij li qee cov retarders kuj muaj qee yam dej-txo ua haujlwm, nyob rau hauv qhov tsim nyog ntau npaum li cas, yog tias qhov ntau npaum li cas, cov dej-cement piv ntawm cov pob zeb sib xyaw yuav me dua, uas yuav pab txhim kho lub zog ntawm cov pob zeb. Nyob rau hauv qhov tseeb tej yaam num, vim ntau npaum li cas ntawm retarder, lub pob zeb yuav tsis teem rau lub sij hawm ntev, thiab cov pob zeb ua kom muaj zog yuav tsis ua tau raws li qhov yuav tsum tau tsim thaum lub sij hawm txais qhov project. Yog li ntawd, peb yuav tsum xyuam xim rau kev xaiv ntawm retarder ntau yam thiab nruj me ntsis tswj qhov ntau npaum ntawm retarder. Nyob rau tib lub sijhawm, peb kuj yuav tsum tau xav txog qhov sib txuam thiab kev hloov pauv ntawm cov khoom siv rov qab thiab cov khoom ua vaj tse.