Ingaba icalcium ifomathi ikhawulezisa ukusetwa kunye nokuqina kwekhonkrithi kuthetha ukuthini?

Ifomati yecalciumngumgubo wolwelo omhlophe okanye otyheli kancinane, onokukhawulezisa isantya sokugalela amanzi kwisamente kwaye uthintele ingxaki yesantya esicothayo sokucwangcisa ebusika okanye ubushushu obuphantsi kunye neemeko ezimanzi, ukuze kuphuculwe amandla okuqala odaka. Namhlanje ndiza kukuxelelaicalcium formate ukukhawulezisa ukusetwa kunye nokuqina kwekhonkrithi yintoni ethile?

Ifomati yecalcium ikhawulezisa ukusetwa kunye nokuqina kwekhonkrithi ngokuthi:

1. Nciphisa ixesha lokuqala lokuseta

2. Ukulungelelanisa ukuseta okucothayo kwesamente phantsi kweemeko zobushushu obuphantsi

3. Ukunyusa izinga lokukhula kwamandla okuqala

4. Nciphisa ixesha lokuvala kwimodyuli ekuveliseni iindawo zekhonkrithi ezenziwe ngaphambili

5. Nciphisa ixesha lokuba ikhonkrithi ifikelele kumthamo wayo womthwalo

Ngokomzekelo, i-samente yasePortland isetyenziswa ngokubanzi kumdaka owomileyo, obonakaliswa ngamandla aphantsi kwinqanaba lokuqala kunye namandla aphezulu kwinqanaba elilandelayo, kwaye ukongeza inani elifanelekileyo le-calcium formate kunenzuzo ekuphuculeni amandla okuqala emveliso.

Kwinkqubo yesamente yasePortland,icalcium formate inempembelelo yokukhuthaza ukudibanisa kunye namandla okuqala, kuba ii-ion ze-formate kwi-HCOO- zinokwenza ukufana kwe-AHt kunye ne-AFm (C₃A·3Ca(HCOO)₂·30H₂OC₃A·Ca(HCOO)·10H₂0, njl.), enciphisa kakhulu ixesha lokumisela i-samente.

Ukwengeza,icalcium formateinokukhuthaza i-hydration ye-calcium silicate, kuba i-HCOO-ion isasazeka ngokukhawuleza kune-Ca2 + ion, kwaye inokungena kwi-hydration layer ye-C3S kunye ne-C2S, ikhawuleza imvula ye-Ca (OH)₂kunye nokubola kwe-calcium silicate. I-HCOO-ion inokuphinda ibophe ii-athomu ze-silicon ukuba zisabele kunye ne-OH- ngokusebenzisa isenzo sekhemikhali, ukwenzela ukuba idibanise amaqela e-silicate asondeleyo, ukukhuthaza ukubunjwa kwejeli ye-CSH, kunye nokuphucula amandla okuqina kwe-cement mortar.