Zotsatira za HPMC ndi CMC pa Kachitidwe ka Konkire

Hydroxypropyl methylcellulose (HPMC) ndi carboxymethyl cellulose (CMC) onse ndi ma ether a cellulose omwe amagwiritsidwa ntchito ngati zowonjezera popanga konkriti. Amagwira ntchito zosiyanasiyana ndipo amatha kukhala ndi zotsatirapo zazikulu pakuchita konkriti. Nazi zotsatira za HPMC ndi CMC pakuchita konkriti:

1. Kusunga Madzi: Onse HPMC ndi CMC ndi othandiza posungira madzi. Amapangitsa kuti konkriti yatsopano isagwire ntchito bwino pochedwetsa kutuluka kwa madzi panthawi yokhazikitsa ndi kuchiritsa. Kusungidwa kwa madzi kwa nthawi yayitali kumathandizira kuonetsetsa kuti tinthu tating'ono ta simenti timakhala ndi madzi okwanira, kumalimbikitsa kukula kwamphamvu kwamphamvu komanso kuchepetsa chiopsezo cha kusweka kwa shrinkage.
2. Kugwira ntchito: HPMC ndi CMC zimagwira ntchito ngati zosintha za rheology, kupititsa patsogolo kugwira ntchito komanso kuyenda kwa zosakaniza za konkriti. Amathandizira kugwirizanitsa ndi kutsekemera kwa kusakaniza, kumapangitsa kuti zikhale zosavuta kuziyika, kugwirizanitsa, ndi kumaliza. Kuchita bwino kumeneku kumathandizira kuphatikizika bwino ndikuchepetsa mwayi wa voids kapena zisa mu konkire yowumitsidwa.
3. Kumatira: HPMC ndi CMC zimathandizira kumamatira kwa konkire ku magawo osiyanasiyana, kuphatikiza zophatikizira, ulusi wolimbitsa, ndi malo opangira mawonekedwe. Amalimbitsa mgwirizano pakati pa zida za simenti ndi zophatikizira, kuchepetsa chiopsezo cha delamination kapena debonding. Kumamatira kowonjezereka kumeneku kumathandizira kuti konkriti ikhale yolimba komanso yokhazikika.
4. Kulowetsedwa kwa Mpweya: HPMC ndi CMC zitha kukhala ngati othandizira mpweya zikagwiritsidwa ntchito muzosakaniza za konkriti. Amathandizira kuyambitsa tinthu ting'onoting'ono ta mpweya mumsanganizo, zomwe zimapangitsa kuti madzi azizizira komanso kuti azikhala olimba polola kusintha kwa mawu chifukwa cha kusinthasintha kwa kutentha. Kulowetsedwa bwino kwa mpweya kungalepheretse kuwonongeka kwa chisanu ndi kukwera m'malo ozizira.
5. Kukhazikitsa Nthawi: HPMC ndi CMC zitha kukhudza nthawi yokhazikika ya zosakaniza za konkriti. Mwa kuchedwetsa hydration reaction ya simenti, amatha kukulitsa nthawi yoyambira ndi yomaliza, kupereka nthawi yochulukirapo yoyika, kuphatikiza, ndi kumaliza. Komabe, kuchulukitsidwa kwa mlingo kapena makonzedwe enaake kungayambitse nthawi yochulukira, zomwe zimafuna kusintha mosamalitsa kuti zikwaniritse zofunikira za polojekiti.
6. Crack Resistance: HPMC ndi CMC zimathandizira kukana ming'alu ya konkire yowumitsidwa pokulitsa mgwirizano wake, ductility, ndi kulimba kwake. Amathandiza kuchepetsa kupangika kwa ming'alu ya shrinkage ndikuchepetsa kufalikira kwa ming'alu yomwe ilipo, makamaka m'malo oletsa kapena opsinjika kwambiri. Kukaniza ming'alu kumeneku kumawonjezera kulimba kwa nthawi yayitali komanso magwiridwe antchito a konkriti.
7. Kugwirizana: HPMC ndi CMC zimagwirizana ndi mitundu yosiyanasiyana ya konkriti ndi zowonjezera, kulola zosankha zosinthika. Atha kugwiritsidwa ntchito molumikizana ndi zosakaniza zina monga superplasticizers, accelerators, retarders, ndi zowonjezera cementitious zipangizo kukwaniritsa zolinga zenizeni ntchito ndi kusungabe kugwirizana ndi bata.

HPMC ndi CMC zimagwira ntchito zofunika kwambiri popititsa patsogolo ntchito ya konkire pokonza kusungirako madzi, kugwira ntchito, kumamatira, kulowetsa mpweya, kukhazikitsa nthawi, kukana ming'alu, komanso kugwirizanitsa. Makhalidwe awo osunthika amawapangitsa kukhala zowonjezera zowonjezera zokometsera zosakaniza za konkriti ndikukwaniritsa mawonekedwe omwe amafunidwa pamapangidwe osiyanasiyana omanga.