Kodi calcium formate imathandizira kukhazikitsa ndi kuumitsa konkriti kumatanthauza chiyani?

Calcium formatendi ufa woyera kapena wachikasu pang'ono, womwe ukhoza kufulumizitsa liwiro la hydration la simenti ndikupewa vuto la kuthamanga kwapang'onopang'ono m'nyengo yozizira kapena kutentha kochepa komanso konyowa, kuti apititse patsogolo mphamvu zoyamba zamatope. Lero ndikuuzani zacalcium formate kufulumizitsa kukhazikitsa ndi kuumitsa konkire ndi chiyani kwenikweni?

Calcium formate imathandizira kukhazikitsa ndi kuumitsa konkriti ndi:

1. Kufupikitsa nthawi yokhazikitsa koyamba

2. Yesetsani kuyika simenti pang'onopang'ono pansi pa kutentha kochepa

3. Wonjezerani kukula kwa mphamvu zoyambirira

4. Kufupikitsa nthawi yotseka mu gawoli popanga magawo opangidwa ndi konkriti

5. Kufupikitsa nthawi konkire kufika katundu wake mphamvu

Mwachitsanzo, simenti ya Portland nthawi zambiri imagwiritsidwa ntchito mumatope owuma, omwe amadziwika ndi mphamvu zochepa m'mayambiriro oyambirira ndi mphamvu zambiri pamapeto pake, ndipo kuwonjezera kuchuluka kwa calcium formate kumapindulitsa kupititsa patsogolo mphamvu zoyamba za mankhwala.

Mu dongosolo la simenti la Portland,calcium formate ali ndi zotsatira zolimbikitsa coagulation ndi mphamvu oyambirira, chifukwa ma ion formate mu HCOO- amatha kupanga zofanana za AHt ndi AFm (C₃A·3Ca (HCOO)₂·30H₂OC₃A·Ca(HCOO)·10H₂0, etc.), zomwe zimachepetsa kwambiri nthawi yoyika simenti.

Kuphatikiza apo,calcium formateimatha kulimbikitsa hydration ya calcium silicate, chifukwa ma HCOO- ions amafalikira mwachangu kuposa ma ions a Ca2 +, ndipo amatha kulowa mumtundu wa C3S ndi C2S, kuthamangitsa mpweya wa Ca (OH)₂ndi kuwonongeka kwa calcium silicate. Ma HCOO-ion amathanso kumangirira maatomu a silicon kuti agwirizane ndi OH-kupyolera muzochita za mankhwala, kuti athe kugwirizanitsa magulu a silicate oyandikana nawo, kulimbikitsa mapangidwe a CSH gel, ndi kupititsa patsogolo kuuma kwa matope a simenti.