Calcium Formate (Ca(HCOO)₂) hauv Cement Hydration: Cov teebmeem thiab cov txheej txheem

Calcium formate (Ca(HCOO)₂), ib yam khoom seem ntawm polyol tsim tawm, yog siv dav hauv cov cement ua cov khoom siv ua kom sai, cov roj nplua nyeem, thiab cov khoom ua kom muaj zog thaum ntxov, ua rau lub sijhawm tawv thiab ua kom tawv sai dua.

Hauv cov cement Portland ib txwm, Ca(HCOO)₂ txhawb kev ua kom C3S (tricalcium silicate) noo thiab ua rau muaj kev tsim ntawm ettringite (AFt), yog li ua kom muaj zog thaum ntxov. Txawm li cas los xij, nws cov kev cuam tshuam rau kev ua kom sulphoaluminate cement (SAC) noo tseem tsis tau tshawb nrhiav.

Hauv kev tshawb fawb no, peb tau tshawb nrhiav qhov cuam tshuam ntawm Ca (HCOO) ₂ rau kev ua kom SAC noo thaum ntxov los ntawm kev tshuaj xyuas:

• Teem sijhawm
• Kev kub ntawm dej
• XRD (X-ray diffraction)
• TG-DSC (thermogravimetric-differential scanning calorimetry)
• SEM (kev siv tshuab hluav taws xob luam theej duab)

Cov kev tshawb pom no muab kev nkag siab txog cov txheej txheem ua haujlwm ntawm Ca (HCOO) ₂ hauv SAC hydration, pab txhawb rau kev nkag siab tob dua txog nws cov kev ua tau zoo hauv lwm cov cement systems.

Nyem qhov no kom tau txais tus nqi luv nqi rau calcium formate.

Lub sijhawm txuag nyiaj rau kev yuav khoom Calcium formate!
Koj puas muaj cov xaj uas yuav los txog? Cia peb kaw cov nqe lus zoo.