Hnub Kawg:4,Dec,2023

Dab tsi yog cov yam ntxwv ntawmPCE-raws li admixtures?

High water-txo cov khoom:Raws li PCE cov khoom xyaw pab txo cov dej los ntawm kev tso cai rau cov pob zeb ua kom nws ua haujlwm tau zoo thaum txo cov dej haus. Qhov no yog ua tiav los ntawm kev siv cov txheej txheem ntau dua ntawm cov cement thiab lwm yam khoom siv los tsim kom muaj kev sib xyaw denser.

PCE superplasticizers feem ntau yog siv rau hauv cov ntawv npaj sib xyaw ua ke uas yuav tsum muaj kev ua haujlwm siab thiab ua haujlwm ntev.

Kev ua haujlwm siab: Cov khoom ua haujlwm tsis zoo ntawm cov khoom sib xyaw ua kom cov pob zeb tiv thaiv sulfate nres, khov-thaw kev puas tsuaj thiab alkali-silica cov tshuaj tiv thaiv.

Slump Maintenance: Raws li kev siv dej txo qis,PCE tshuaj tuaj yeem pab txo cov ntsiab lus dej uas yuav tsum tau ua kom ua tiav qhov kev poob qis los ntawm kev txhim kho kev ua haujlwm ntawm cov pob zeb sib tov. Qhov no feem ntau yog ua tiav los ntawm kev txo cov dej-cement piv thiab ua kom cov particle loj faib. Yog li, qhov no yuav pab tiv thaiv kom tsis txhob muaj dej ntau dhau thaum lub sijhawm sib xyaw, uas tuaj yeem ua rau poob qis.

Qhov zoo ntawmPCE-raws li Admixture:

Txhim kho kev ua haujlwm:Raws li PCE cov khoom xyaw muab kev sib xyaw ua ke zoo dua nrog lub zog siab dua thiab ua haujlwm nrawm dua yam tsis muaj kev cuam tshuam qhov chaw teeb tsa. Nws kuj tseem txhim khu kev ua haujlwm ntawm cov pob zeb tshiab, ua kom yooj yim rau cov twj tso kua mis thiab qhov chaw.

 Txo permeability: Cov khoom sib xyaw tuaj yeem txo cov permeability ntawm pob zeb, yog li txo qhov kev pheej hmoo ntawm ya raws nkag mus rau hauv cov pob zeb.

 Kev sib xyaw ua ke zoo: Perchloroethylene-based admixtures ua rau cov khoom sib xyaw ua ke zoo heev nrog kev txhim kho cov cement hydration thiab pouring zog. Qhov no txhim kho lub zog thiab zoo ntawm cov pob zeb.

 Txo qhov shrinkage: Cov khoom sib xyaw ua ke tuaj yeem txo qhov shrinkage ntawm pob zeb, uas yuav pab txo qis kev pheej hmoo ntawm kev tawg thiab lwm yam kev puas tsuaj. Cov admixtures muab cov pob zeb sib tov nrog ib qho kev kho sab hauv. Lub xub ntiag ntawm polycarboxylate ethers tso cai rau cov khoom sib xyaw kom nqus thiab khaws cov dej hauv cov pob zeb sib xyaw.

 Txhim kho tiav:Raws li PCE cov khoom xyaw tuaj yeem txhim kho qhov ua tiav ntawm cov pob zeb, ua kom nws smoother, ntau aesthetically pleasing thiab nrog ib tug zoo sib xws nto. Kev txhim kho tiav pab ua kom lub zog ntawm cov pob zeb ua kom zoo. Qhov sib tov no tseem muab cov qauv sib xyaw ua ke ntau dua thiab txo qhov kev nyiam rau shrinkage cracking. Tsis tas li ntawd, nws tuaj yeem pab txo qhov nqus dej thiab nres cov dej seepage.