Tsiku Lotumiza:15, Jan,2024
1. Kugwiritsa ntchito simenti:
Mapangidwe a simenti ndi zida za simenti ndizovuta komanso zosinthika.Kuchokera pamalingaliro a adsorption-dispersion mechanism, ndizosatheka kupeza chotsitsa madzi chomwe chili choyenera chilichonse.Ngakhalepolycarboxylate wochepetsera madzi ali ndi kusinthasintha kokulirapo kuposa mndandanda wa naphthalene, akadali Osatha kusinthika ndi simenti.Kusinthasintha uku kumawonekera kwambiri: kuchepetsa kuchepa kwa madzi komanso kutsika kwamadzi.Ngakhale ndi simenti yomweyo, zotsatira za madzi kuchepetsa wothandizira adzakhala osiyana pamene mpira milled kuti fineness osiyana.
Chochitika:Malo osakaniza amagwiritsa ntchito simenti inayake ya P-042.5R m'deralo kuti apereke konkire ya C50 kumalo omanga.Amagwiritsa ntchito apolycarboxylatesmakina apamwamba kwambiri apulasitikiwothandizira kuchepetsa madzi.Popanga konkriti kusakaniza chiŵerengero, anapeza kuti kuchuluka kwa madzi kuchepetsa wothandizila ntchito simenti ndi Ndiko pang'ono kuposa simenti ena, koma pa kusanganikirana kwenikweni, kugwa kwa fakitale osakaniza konkire anali zowoneka anayeza kukhala 21Omm.Pamene ndinapita kumalo omangako kukatsitsa galimoto yopopera konkire, ndinapeza kuti galimotoyo sinathe kutsitsa konkire.Ndinadziwitsa fakitale kuti itumize mbiya.Pambuyo powonjezera madzi ochepetsa madzi adawonjezeredwa ndikusakanikirana, kutsika kowoneka kunali 160mm, komwe kumakwaniritsa zofunikira zopopera.Komabe, mkati mwa ntchito yotsitsa, zikuwoneka kuti sizingatsitsidwe.Galimoto ya konkire idabwezeredwa nthawi yomweyo kufakitale, ndipo madzi ochulukirapo komanso ochepetsera pang'ono adawonjezedwa.The madzi wothandizila anali movutira kutulutsidwa ndipo pafupifupi olimba mu chosakanizira galimoto.
Kusanthula zifukwa:Sitinaumirire kuyesa kusinthasintha ndi zosakaniza pagulu lililonse la simenti tisanatsegule.
Kupewa:Chitani mayeso ophatikiza ndi chiŵerengero chosakanikirana cha zomangamanga pagawo lililonse la simenti musanatsegule.Sankhani zosakaniza zoyenera."Gangue" ngati chophatikizira cha simenti sichikhoza kusinthika ku polycarboxylate smakina apamwamba kwambiri apulasitikizochepetsera madzi, choncho pewani kugwiritsa ntchito.
2.Kukhudzidwa ndi kumwa madzi
Chifukwa chogwiritsa ntchitopolycarboxylate kuchepetsa madzi, kumwa madzi konkire kumachepetsedwa kwambiri.Kumwa madzi konkire imodzi kumakhala 130-165kg;madzi-simenti chiŵerengero ndi 0.3-0.4, kapena ngakhale kuchepera 0.3.Pogwiritsa ntchito madzi otsika, kusinthasintha kwa madzi owonjezera kungayambitse kusintha kwakukulu, zomwe zimapangitsa kuti konkire yosakaniza ichuluke mwadzidzidzi ndikutuluka magazi.
Chochitika:Malo osanganikirana amagwiritsa ntchito simenti ya P-032.5R yochokera kufakitale ina ya simenti kukonza konkire ya C30.Mgwirizanowu umafuna kuti kutsetsereka kwa malo omangako ndi 150mm:t30mm.Konkire ikachoka pafakitale, kutsika koyezera ndi 180mm.Pambuyo potumizidwa kumalo omanga, konkire imayesedwa pamalo omangapo.Kutsika kunali 21Omm, ndipo magalimoto awiri a konkire adabwezedwa motsatizana.Nditabwerera kufakitale, zidatsimikiziridwa kuti kugwa kukadali 21Omm, ndipo kunali kukha mwazi ndi kutayika.
Chifukwa:Simenti iyi imakhala yabwino kusinthasintha kwa wochepetsera madzi, ndipo kuchuluka kwa mankhwala ochepetsera madzi ndikokulirapo pang'ono.Kusakaniza nthawi sikokwanira, ndipo kugwa kwa konkire pamene kusiya makina si kugwa kwenikweni chifukwa cha nthawi yochepa kusakaniza.
Kupewa:Kwa simenti yomwe imakhudzidwa ndi mlingo wa polycarboxylatesmakina apamwamba kwambiri apulasitikizosakaniza zochepetsera madzi, mlingo wa admixtures uyenera kukhala woyenera ndipo kulondola kwa muyeso kuyenera kukhala kwakukulu.Moyenera onjezerani nthawi yosakaniza.Ngakhale ndi mapasa-shaft kukakamiza chosakanizira, nthawi yosakaniza siyenera kukhala yochepera masekondi 40, makamaka kuposa masekondi 60.
Nthawi yotumiza: Jan-15-2024