Hnub tim: 2, Sep, 2025

Hom hom admixtures thiab lawv lub luag hauj lwm nyob rau hauv npaj-mixed pob zeb:

Concrete admixtures yog ib qho tseem ceeb rau kev txhim kho kev ua tau zoo ntawm cov pob zeb, thiab ntau hom admixtures muaj lub luag haujlwm sib txawv hauv cov pob zeb sib xyaw ua ke. Feem ntau hom admixtures yog dej reducers, accelerators, antifreeze agents thiab preservatives. Raws li cov khoom tseem ceeb hauv pob zeb, cov dej reducers tuaj yeem txo cov dej siv hauv pob zeb thiab txhim kho kev ua haujlwm thiab lub zog ntawm pob zeb. Kev siv cov dej reducers tuaj yeem ua kom cov pob zeb yooj yim rau kev tsim, fluidity zoo dua, thiab txhawb kev tawg ntawm cov cement zoo dua, yog li txhim kho lub zog thaum ntxov thiab tiv thaiv permeability ntawm pob zeb.

Accelerators tuaj yeem txhawb nqa kev ua kom tawv tawv sai sai thiab ua kom lub sijhawm pib lub sijhawm luv, uas yog tsim rau qhov kub thiab txias ib puag ncig lossis cov xwm txheej uas yuav tsum tau tsim kho sai. Kev txuas ntxiv ntawm lub sijhawm yas muaj qhov cuam tshuam loj rau kev txhim kho kev ua haujlwm ntawm pob zeb.

Antifros muaj kev ua haujlwm ntawm kev tiv thaiv cov pob zeb hauv qhov kub thiab txias, uas tuaj yeem ua kom cov pob zeb ua haujlwm ib txwm nyob rau hauv qhov chaw tsis muaj qhov kub thiab txias, thiab tiv thaiv cov pob zeb los ntawm kev sib zog qeeb qeeb vim qhov kub thiab txias, uas cuam tshuam rau kev loj hlob ntawm lub zog.

Preservatives yog siv los tiv thaiv corrosion nyob rau hauv ntau qhov chaw thiab txhim kho lub durability ntawm pob zeb.

Cov pob zeb sib xyaw ua ke no muaj lawv tus kheej cov yam ntxwv thiab kev siv. Kev xaiv kom raug thiab siv tau tuaj yeem txhim kho kev ua tau zoo ntawm cov pob zeb sib xyaw ua ke thiab txhim kho kev ua tau zoo thiab zoo ntawm tag nrho cov phiaj xwm. Nkag siab txog kev ua tau zoo thiab kev siv ntau yam admixtures yuav pab engineering txiav txim siab xaiv admixtures ntau scientific thiab tsim nyog thiab optimize engineering daim ntawv thov ntawm

npaj-mixed qhob.

Kev sib piv ntawm cov khoom sib txawv hauv cov pob zeb sib xyaw ua ke:

Dej reducer yog ib qho kev sib xyaw ua ke sib xyaw ua ke. Nws lub luag haujlwm tseem ceeb yog txo cov dej siv ntawm cov pob zeb tsis hloov qhov sib cais thiab kev sib xyaw ntawm cov pob zeb, yog li txhim kho kev ua haujlwm thiab lub zog ntawm cov pob zeb.Qhov txo qis ntawm cov dej siv hauv cov pob zeb sib xyaw ua ke muaj qhov cuam tshuam loj rau qhov zoo. Thawj qhov cuam tshuam yog kev txhim kho lub zog ntawm pob zeb. Qhov no yog vim hais tias cov dej xav tau rau cov cement hydration cov tshuaj tiv thaiv yog txo, yog li cov dej ntau tuaj yeem siv los tsim cov khoom hydration, yog li ua kom muaj kev sib raug zoo ntawm cov khoom theem thiab txhim kho lub zog. Kev siv cov dej reducer tuaj yeem txhim kho qhov ruaj khov ntawm cov pob zeb. Cov khoom tsim los ntawm cov cement hydration hauv cov pob zeb tuaj yeem sau qhov pores, txo qhov porosity, thiab txo qhov pore txuas, yog li txhim kho cov ntsuas qhov ntev ntawm cov pob zeb xws li impermeability thiab Frost tsis kam.