CHITSUTSO CHA MADZI CHAMBIRI (SMF)ndi chida chamagetsi chosungunuka m'madzi cha anion chokhala ndi polima yambiri. SMF ili ndi mphamvu yoyamwa madzi komanso mphamvu yogawa simenti. SMF ndi imodzi mwa zitsime zomwe zili mu simenti yomwe ilipo. Zinthu zazikulu ndi izi: yoyera, mphamvu yochepetsera madzi yambiri, mtundu wosakhala ndi mpweya wabwino, kuchuluka kwa ma ion a chloride kochepa sikuli ndi dzimbiri pazitsulo zachitsulo, komanso kusinthasintha bwino ndi simenti zosiyanasiyana. Pambuyo pogwiritsa ntchito chida chochepetsera madzi, mphamvu yoyambirira ndi kulowa kwa simenti kunakula kwambiri, mphamvu yomangira ndi kusunga madzi zinali bwino, ndipo kukonza nthunzi kunasinthidwa.
Mu kugwa kwa konkriti, mkhalidwe womwewo ukhoza kuchepetsa kwambiri kusakaniza kwa madzi kosakanikirana kotchedwa wothandizira wochepetsera madzi wochita bwino kwambiri. Pankhani yomweyi, kugwa kwa konkriti komweko, kusakaniza ndi kugwiritsa ntchito madzi kumatha kuchepetsedwa ndi oposa 15%.
Chitukuko mbiri:Mbadwo woyamba wa mankhwala ochepetsa madzi amphamvu kwambiri komanso superplasticizer yochokera ku amine resin unapangidwa kumayambiriro kwa zaka za m'ma 1960. Chifukwa cha ntchito ya mankhwala ochepetsa madzi wamba ndi lignesulfonate yomwe idapangidwa kumapeto kwa zaka za m'ma 1930, imadziwikanso kuti superplasticizer. Mbadwo wachiwiri wa mankhwala ochepetsa madzi amphamvu kwambiri ndi amino sulfonate, ngakhale kuti motsatira nthawi pambuyo pa mbadwo wachitatu wa superplasticizer - polycarboxylic acid series. Copolymer ya graft yokhala ndi sulfonic acid ndi carboxylic acid ndiyo yofunika kwambiri m'badwo wachitatu wa mankhwala ochepetsa madzi amphamvu kwambiri, ndipo ntchito yake ndi yabwino kwambiri yochepetsera madzi amphamvu kwambiri.
Mitundu ikuluikulu:Kuchuluka kwa madzi komwe kumachepetsa mphamvu ya madzi kumatha kufika pa 20%. Ndi mndandanda wa naphthalene, mndandanda wa melamine ndi wothandizira wochepetsera madzi, womwe ndi mndandanda waukulu wa naphthalene, womwe ndi 67%. Makamaka, mankhwala ambiri ochepetsera madzi omwe amagwira ntchito bwino kwambiri amachokera ku naphthalene ngati chinthu chachikulu chopangira. Malinga ndi kuchuluka kwa Na2SO4 mu naphthalene series superplasticizer, imatha kugawidwa m'magulu azinthu zokhala ndi kuchuluka kwakukulu (Na2SO4 <3%), zinthu zokhala ndi kuchuluka kwapakati (Na2SO4 3%-10%) ndi zinthu zokhala ndi kuchuluka kochepa (Na2SO4> 10%). Mafakitale ambiri opanga naphthalene superplasticizer ali ndi kuthekera kowongolera kuchuluka kwa Na2SO4 pansi pa 3%, ndipo mabizinesi ena apamwamba amatha kuwongolera kuchuluka kwa NA2SO4 pansi pa 0.4%.
Naphthalene series of water reduction agent ndiyo yaikulu kwambiri m'dziko lathu, ndi yomwe imagwiritsidwa ntchito kwambiri pochepetsa madzi (yomwe imaposa 70% ya kuchuluka kwa madzi), yomwe imadziwika ndi kuchuluka kwa madzi (15% ~ 25%), mpweya wopanda mpweya, nthawi yoikika imakhala yochepa, simenti imatha kusinthasintha bwino, ingagwiritsidwe ntchito ndi zinthu zina zowonjezera, mtengo wake ndi wotsika mtengo. Naphthalene superplasticizer nthawi zambiri imagwiritsidwa ntchito pokonza konkriti yokhala ndi kuyenda kwakukulu, mphamvu zambiri komanso magwiridwe antchito apamwamba. Kutayika kwa konkriti ndi naphthalene superplasticizer kumathamanga kwambiri. Kuphatikiza apo, kusinthasintha kwa naphthalene series water reduction agent ndi simenti ina kuyenera kukonzedwa.
Katundu:Chothandizira kuchepetsa madzi bwino kwambiri chimakhala ndi mphamvu yofalikira kwambiri pa simenti, chimatha kusintha kwambiri kayendedwe ka simenti ndi kugwa kwa simenti, pomwe chimachepetsa kwambiri kugwiritsa ntchito madzi, chimathandizira kwambiri kugwira ntchito kwa simenti. Koma superplasticizer ina imathandizira kutayika kwa simenti, kusakaniza kwambiri kumachotsa madzi m'thupi. Chothandizira kuchepetsa madzi bwino kwambiri sichisintha nthawi yokhazikitsa simenti, ndipo chimakhala ndi mphamvu yochedwetsa pang'ono pamene mlingo uli waukulu (kuphatikiza mlingo wochulukirapo), koma sichichedwetsa kukula kwa mphamvu koyambirira kwa simenti yolimba.
Zingachepetse kwambiri kugwiritsa ntchito madzi ndikuwonjezera mphamvu ya simenti pazaka zosiyanasiyana. Mphamvu ikasungidwa nthawi zonse, simenti imatha kusungidwa ndi 10% kapena kuposerapo.
Kuchuluka kwa ayoni ya chloride ndi kochepa, palibe zotsatira za dzimbiri pa chitsulo. Kungawonjezere kusalowa madzi, kukana kuzizira ndi kusungunuka komanso kukana dzimbiri kwa konkire, komanso kulimbitsa kulimba kwa konkire.
NTCHITO:
1, Yoyenera mitundu yonse ya zomangamanga zamafakitale ndi zapakhomo, kusamalira madzi, mayendedwe, doko, kukonza konkire ya municipal engineering ndi konkire yolimbikitsidwa.
2, Yoyenera konkire yamphamvu kwambiri, yolimba kwambiri komanso yapakatikati, komanso yolimba kwambiri, yolimba pang'ono, komanso yolimba kwambiri.
3, Yoyenera kugwiritsidwa ntchito popanga konkriti yokonzedwa kale kuti igwiritsidwe ntchito pokonza nthunzi.
4, Yoyenera mitundu yosiyanasiyana ya zinthu zolimbitsa thupi zomwe zimachepetsa madzi (Master Batch).
Kulongedza: 25kg/Chikwama
Kusunga: Sungani pamalo otsekedwa bwino, osapsa ndi kuwala, komanso chitetezeni ku chinyezi.
Nthawi yotumizira: Marichi-06-2023