Polycarboxylate superplasticizer hmoov

Polycarboxylate superplasticizer (PCE) yog ib hom kev ua haujlwm siab dej-txo cov khoom siv hauv cov pob zeb thiab cov cement. Nws yog feem ntau muaj nyob rau hauv ob qho tib si kua thiab hmoov cov ntaub ntawv. Txawm li cas los xij, raws li kuv qhov kev hloov tshiab kawg rau lub Cuaj Hlis 2021, cov kua dej tau siv dav dua thiab muaj nyob hauv khw.

Polycarboxylate superplasticizers yog ntxiv rau cov pob zeb sib xyaw kom ua haujlwm tau zoo yam tsis muaj kev cuam tshuam lub zog. Lawv muaj zog dispersing nyhuv ntawm cov cement hais, uas txo cov dej xav tau hauv kev sib tov. Qhov txo qis hauv cov ntsiab lus dej ua rau muaj zog dua, txhim kho durability, thiab nce fluidity ntawm cov pob zeb sib tov.

Qhov zoo ntawm kev siv polycarboxylate superplasticizers hauv pob zeb muaj xws li:

1. Ua kom muaj peev xwm ua haujlwm ntxiv: Nws txhim kho qhov fluidity thiab yooj yim ntawm kev tuav cov pob zeb, ua kom yooj yim rau qhov chaw, compact, thiab ua tiav.

2. Lub zog siab: Txawm tias cov dej qis dua, cov pob zeb ua ke nrog cov superplasticizers tuaj yeem ua kom muaj zog compressive ntau dua vim tias txo cov porosity thiab txhim kho particle packing.

3. Txhim kho durability: Cov dej txo qis thiab txhim kho cov cement dispersion ua rau denser thiab impermeable pob zeb ntau dua, txhim kho nws cov kev tiv thaiv rau ntau hom kev deterioration.

4. Txhim kho kev sib koom ua ke: Nws txhim kho cov cohesiveness ntawm pob zeb, txo qhov kev pheej hmoo ntawm kev sib cais thiab los ntshav.

5. Txo qhov shrinkage thiab tawg: Cov khoom ntim tau zoo dua qub thiab txo cov dej hauv cov dej ua rau txo qis kom qhuav thiab tawg tsawg dua hauv cov pob zeb tawv tawv.

Nyob rau hauv daim ntawv hmoov, polycarboxylate superplasticizer yuav tsum tau tov kom zoo nrog dej los tsim ib qho kev daws teeb meem ua ntej ntxiv rau cov pob zeb sib tov. Cov txheej txheem ntau npaum li cas thiab kev sib xyaw yuav txawv nyob ntawm cov khoom tshwj xeeb thiab daim ntawv thov.

Raws li kev siv thev naus laus zis thiab cov khoom muaj hloov pauv lub sijhawm, nws muaj peev xwm hais tias polycarboxylate superplasticizers tam sim no muaj ntau dua nyob rau hauv daim ntawv hmoov. Yog li ntawd, kuv pom zoo kom kuaj nrog cov neeg muag khoom hauv zos lossis cov chaw tsim khoom kom paub meej tias muaj tam sim no ntawm polycarboxylate superplasticizer hmoov hauv koj cheeb tsam.