Kusakaniza kwa madzi kuchepetsa mankhwala kumapitilira kuchuluka kwa nthawi zingapo, ndipo mphamvu yake pakuchita konkriti iyenera kutsimikiza malinga ndi momwe zinthu ziliri malingana ndi zomwe zikuchitika.
Poyamba, mu konkriti-mphamvu-hardrete, chifukwa chivindikiro cha madzi ndi ≤0.3 kapena ngakhale otsika ngati 0,2, nthawi zambiri amawonetsa kuti malo a konkriti samvera kuchuluka kwamadzi kuchepetsa mankhwala. Kuti tikwaniritse madzi abwino, madzi amachepetsedwa. Mlingo wa wothandizirayo nthawi zambiri umakhala mlingo wabwinobwino, ndiye kuti, mlingo waPolycaxomyylic acidamafunikira kufikira 5% -8%. Kwa konkriti pansipa C50, zoterezi ndizodabwitsa. Komabe, zotsatirapo zake zikuwonetsa kuti kulimba kwa konkriti m'badwo uliwonse kumachitika bwino pamavuto kumeneku, ndipo mphamvu ya konkriti ya konkriti yakonzedwa ndi mphamvu yopitilira 100mpa.
Cholinga chake ndikuti: Kubalalika kwamadzi kuchepetsa mankhwalaPa simenti ndi ma adsorption chabe.Madzi kuchepetsa mankhwalamamolekyulu amapangika pamtunda wa simenti tinthu. Kudzera chododometsa ndi electrostatic utoto, kapangidwe kazinthu za simenti ndi madzi osagawika ndipo madzi aulere amamasulidwa. , Potero akuwonjezera madzimadzi a konkriti, komanso chifukwa cha mawonekedwe ake apadera,Polycaxomyylic acidzochokeramadzi kuchepetsa mankhwalaItha kuletsa tinthu tating'onoting'ono tomwe timayambiranso mkati mwa nthawi yayitali, chifukwa chake ili ndi magwiridwe antchito osungunuka. Kamodzi nthawi inayake yadutsa, chinthu cha simenti hydrate chidzakulungamadzi kuchepetsa mankhwalamamolekyulu osokoneza pamwamba pa tinthu tating'onoting'ono. Pambuyo pamadzi kuchepetsa mankhwalaMamolekyu amatetezedwa, kubalaku kutha kwathunthu, kenako sikuthandizanso kapena kukopa konkriti. Simenti nthawi zambiri imathirira mphamvu ya konkriti yomwe imamera.
Zachidziwikire, chifukwa cha zomwe zili pamwambamadzi kuchepetsa mankhwala, kupsinjika kwamadzi kuchepetsa mankhwalamamolekyu opezeka konkriti ndiakulu. Pambuyo mamolekyulu ena amaphimbidwa ndi zinthu zopatsa mphamvu za simenti, mamolekyu atsopano amapangidwira pa simenti othandizirana, kupewa simenti tinthu tambiri. Network imapangidwa, yomwe imafikitsa nthawi yokhala pamlingo wina, koma malo ambiri a Speamer sapitirira 24h.
Mlandu wachiwiri,madzi kuchepetsa mankhwalaIyokha ili ndi mpweya wabwino komanso wotaya katundu wina, ndipo kangapo kwa kuphatikiza pa intaneti kumatha kukhala ndi zovuta kwambiri pakuchita konkriti. Nthawi zambiri, kuchuluka kwa njira yobwezera kumatsimikizika malinga ndi kutentha, zofunikira zaukadaulo ndi mlingo wamadzi kuchepetsa mankhwala. Adsorky imakhudzanso hydration wa cemention. Mu nkhani yopepuka, nthawi yokhala nthawi imatenga nthawi yayitali, ndipo munjira yovuta kwambiri, konkritiyo sinakhazikike kwa masiku angapo kapena kwamuyaya. Nthawi zambiri, kwa konkriti yomwe yakhazikitsa masiku awiri kapena kuposerapo, chifukwa cha kuchedwa kwambiri kwa mankhwalawa hydration, mtundu ndi kuchuluka kwa zinthu za hydrate kudzasintha, zomwe zimapangitsa kuchepa kwadoko konkriti. Zachidziwikire, kwa milu yapansi panthaka (nthawi zambiri itakhala koyamba) ndi kungomanga konkire konkriti monga maziko a Pilo, zisoti, nditakhala nthawi yayitali. Nthawi zambiri, kulimba kumayenera kukulitsidwa moyenera panthawi yosakaniza. Onetsetsani kuti mphamvu 28 yokumana ndi zomwe amapanga.
Kutulutsa kwa mpweyamadzi kuchepetsa mankhwalandiwosakaniza kangapo. Mphepo yomwe ili ndi konkriti ili yoyenera kusakanikirana kosakanikirana, mpweya womwewo umawonjezeka kwambiri atasakanikirana kangapo. Konkriti yolemera ili ndi yolemera kwambiri, ndipo konkritiyo ndi yoyandama ndipo yoyandama ndi yoyaka, yomwe ili yovuta pomwe konkritiyo ndi yotayirira, mphamvu ya konkriti imachepetsedwa kwambiri.
Mu mlandu wachitatu, ngakhalemadzi kuchepetsa mankhwalaIyo yokha ilibe mtundu wowuma, utatha kuwirikiza, ngati kumwa madzi sikusinthidwa mu nthawi, kugwiritsidwa ntchito kwa konkriti yatsopanoyi kungaike bwino kwambiri, chifukwa cha kubereka kwakukulu. Madzi, kusankhana, kuyanjana, kuumitsa, ndi zina zambiri, komanso kufooka kwamkati ndi kukhazikika kwa chiwerengero cha masitima ozungulira, komanso kuchepa mphamvu , zomwe zimapangitsa kuti zitsulo zikhale zolimba kwambiri. Kuchuluka kwa magazi komwe kumachitika chifukwa chophatikizidwa kwambiri kumawonekeranso pamalo a konkriti ndi magawo omwe akukumana ndi mapangidwe ake, ndipo zilema zambiri zonga ming'alu, Zisa, ndi zisa zodziwika bwino zimawoneka ngati nkhungu itachotsedwa, zomwe zimapangitsa kuti mawonekedwe a konkriti athe kukana kukokoloka kwakukunja kumachepetsa konkriti.
Post Nthawi: Desic-02-2021
