Chidule:
Ntchito yomanga imathandiza kwambiri kuti dziko lamakono liziyenda bwino, ndipo simenti ndiyo maziko ake.Kwa zaka zambiri, akatswiri ofufuza ndi mainjiniya akhala akuyang'ana njira zowonjezerera kuti simenti ikhale yabwino komanso yogwira ntchito.Njira imodzi yodalirika imaphatikizapo kuwonjezera zowonjezera, zomwe calcium formate yakhala wosewera wodziwika bwino.
dziwitsani:
Simenti ndi gawo lofunika kwambiri pomanga ndipo imafuna kuwongolera kosalekeza kuti ikwaniritse zosowa zamakampani.Zowonjezera zowonjezera zatsimikizira kuti ndi njira yabwino yopititsira patsogolo mbali zosiyanasiyana za simenti.Calcium formate, mankhwala opangidwa ndi calcium oxide ndi formic acid, akopa chidwi chifukwa cha kuthekera kwake kupititsa patsogolo zinthu za simenti.Nkhaniyi ikufuna kufotokoza momwe calcium imakhudzira ubwino ndi ntchito ya simenti.
Calcium formate Chemical properties:
Musanafufuze za zotsatira za calcium formate pa simenti, ndikofunikira kumvetsetsa chemistry ya chowonjezera ichi.Calcium formate ndi ufa wa crystalline woyera wokhala ndi mankhwala Ca (HCOO)2.Imasungunuka m'madzi ndipo imakhala ndi hygroscopic.Kuphatikizika kwapadera kwa calcium ndi ayoni a formate kumapangitsa kuti pawiriyo ikhale yeniyeni, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito mosiyanasiyana, kuphatikiza kukonza simenti.
Njira:
Kuphatikizika kwa kashiamu mu zosakaniza za simenti kumayambitsa njira zingapo zomwe zimathandizira kuti ntchitoyo ikhale yabwino.Njira imodzi yayikulu imakhudza kuthamangitsidwa kwa simenti.Calcium formate imagwira ntchito ngati chothandizira, kulimbikitsa mapangidwe a hydrates monga calcium silicate hydrate (CSH) ndi ettringite.Kuthamanga uku kumabweretsa nthawi yokhazikika komanso kuwonjezeka kwamphamvu koyambirira.
Kuphatikiza apo, calcium formate imagwira ntchito ngati malo opangira mpweya wa hydrate, zomwe zimakhudza microstructure ya matrix a simenti.Kusintha kumeneku kumapangitsa kuti hydrate ikhale yowonjezereka komanso yofanana kwambiri, zomwe zimathandiza kuti zikhale zolimba komanso kuchepetsa kutsekemera.
Kuphatikiza apo, calcium formate imatenga nawo gawo mu pozzolanic reaction, pomwe imakhudzidwa ndi calcium hydroxide kupanga gel owonjezera a CSH.Izi sizimangowonjezera kukulitsa mphamvu komanso zimachepetsa chiopsezo cha kuchedwa kwa ettringite mapangidwe (DEF), chinthu chomwe chingasokoneze kulimba kwa simenti kwa nthawi yayitali.
Kupititsa patsogolo ubwino wa simenti:
Kukula kwa Mphamvu Zoyambirira:
Kuthekera kwa calcium formate kufulumizitsa simenti ya simenti kumatanthawuza kusintha kwakukulu pakukula kwamphamvu koyambirira.Izi ndizofunikira kwambiri pama projekiti omanga pomwe mphamvu zimafunika kupezedwa mwachangu.Kuthamanga kwa nthawi yokhazikika komwe kumalimbikitsidwa ndi calcium formate kumatha kupangitsa kuti ntchito yomanga ikhale yofulumira komanso kupita patsogolo mwachangu.
Kukhazikika kwamphamvu:
Calcium formate amawonjezeredwa kuti asinthe mawonekedwe a simenti, zomwe zimapangitsa kuti pakhale chinthu cholimba.Kuchulukirachulukira komanso kugawa kofanana kwa ma hydrate kumathandizira kukulitsa kukana kuukira kwamankhwala, kuzizira kwamadzi, komanso kuvala.Chifukwa chake, mawonekedwe a simenti opangidwa ndi calcium formate amawonetsa moyo wautali wautumiki.
Chepetsani permeability:
Chimodzi mwazinthu zazikulu zomwe zimakhudza kulimba kwa konkriti ndi kuthekera kwake.Calcium formate imachepetsa permeability pokhudza mapangidwe a pore a matrix a simenti.Mapangidwe a matrix owundana okhala ndi ma pores abwino kwambiri amachepetsa kulowa kwa madzi ndi zinthu zaukali, potero kumawonjezera kukana kwa konkriti kuti zisawonongeke.
Kuchepetsa kwa Alkali Silica Reaction (ASR):
Kafukufuku wapeza kuti calcium formate imatha kuchepetsa chiopsezo cha alkali-silika reaction, njira yovulaza yomwe ingayambitse kutupa kwa gel osakaniza ndi kusweka kwa konkire.Pokhudza mapangidwe a pore ndi mankhwala a simenti slurry, calcium formate imathandizira kuchepetsa kuthekera kwa kuwonongeka kwa ASR.
Zowonjezera machitidwe:
Kuwongolera makina:
Mmene kashiamu formate pa simenti hydration ali ndi zotsatira zabwino pa workability wa mwatsopano konkire.Kufulumizitsa nthawi yoikika komanso kukhathamiritsa kwa hydration kinetics kumathandizira kusintha mawonekedwe, kuwongolera kuyika komanso kuphatikizika kwa konkriti.Izi ndizopindulitsa makamaka pamene kuyika kwake kuli kofunika kwambiri.
kuwongolera kutentha:
Kugwiritsiridwa ntchito kwa calcium formate mu simenti kumathandiza kuchepetsa zotsatira za kutentha kwakukulu panthawi yochiritsa.Kufulumizitsa nthawi zoikika zomwe zimapangitsa kuti calcium ipangidwe kumatha kufulumizitsa kukula kwamphamvu ndikuchepetsa kusatetezeka kwa konkriti kumavuto okhudzana ndi kutentha monga kung'ambika kwamafuta.
Malingaliro okhazikika:
Calcium formate ili ndi zinthu zomwe zimakwaniritsa zolinga zokhazikika zamakampani omanga.Pozzolanic reactivity yake imathandizira kagwiritsidwe ntchito ka zinyalala, ndipo kukhudzika kwake pakukhalitsa ndi moyo wautali kumathandizira kuchepetsa kuwononga chilengedwe komwe kumakhudzana ndikusintha ndi kukonza zokalamba.
Mavuto ndi malingaliro:
Ngakhale kuti phindu lophatikizira kashiamu mu simenti ndi lodziwikiratu, mavuto omwe angakhalepo ndi zolepheretsa ziyenera kuganiziridwa.Izi zingaphatikizepo kuchuluka kwa mtengo, kuyanjana komwe kungachitike ndi zosakaniza zina, komanso kufunikira kowongolera mosamala mlingo kuti mupewe zotsatira zoyipa.Kuphatikiza apo, kugwira ntchito kwanthawi yayitali komanso kulimba kwa konkriti yokhala ndi calcium yothira pansi pazikhalidwe zinazake kumafuna kufufuza kwina ndi maphunziro akumunda.
Pomaliza:
Kuphatikizira mawonekedwe a kashiamu mu simenti ndi njira yodalirika yopititsira patsogolo luso ndi magwiridwe antchito ofunikirawa.Kupyolera mu kachitidwe kake kazinthu zambiri, calcium formate imathandizira hydration, imapangitsa kuti microstructure ipangidwe komanso imathandizira kuzinthu zosiyanasiyana zofunika, kuphatikizapo kukula kwamphamvu koyambirira, kukhazikika kolimba komanso kuchepetsa kutsekemera.Pamene ntchito yomanga ikupitabe patsogolo, ntchito ya zowonjezera monga calcium formate pakukonza simenti ikuyenera kukhala yofunika kwambiri.Kufufuza kwina ndi kugwiritsa ntchito moyenera mosakayikira kudzawonetsanso kuthekera kokwanira komanso koyenera kwa calcium formate popanga simenti, ndikutsegulira njira yokhazikika komanso yokhazikika.
Nthawi yotumiza: Dec-05-2023