Tsiku Lolemba:15, Jan,2024
1.
Zomwe zimapangidwa ndi simenti ndi cemements ndizovuta komanso zosasinthika. Kuchokera pakuwona kwamakina obalalitsa, ndizosatheka kupeza wothandizira madzi omwe ali oyenera pa chilichonse. NgakhalePolycaxtlate Wogulitsa madzi ali ndi zosintha kwambiri kuposa mndandanda wa Naphthalene, komabe akhoza kukhalabe osasinthika ndi simenti ena. Kusintha kumeneku kumaonekera bwino kwambiri mu: kuchepa kwa madzi kuchepetsedwa kwa madzi ndikuwonjezera kuchepa. Ngakhale itakhala simenti yomweyo, zotsatira za kuchepetsa madzi kukhale kosiyana ndi mpira wosinthana bwino.
PHOMENEN:Malo osakanikirana amagwiritsa ntchito simenti ina ya P-042.5R m'dera lakomweko kuti ipeze konkriti ya C50 ku malo omanga. Imagwiritsa ntchito APolycarboxtlatesuperplastizerwothandizira madzi. Mukamapanga ranrio yosakaniza konkriti, imapezeka kuti kuchuluka kwa mankhwala ochepetsa madzi omwe amagwiritsidwa ntchito mu simenti ndi kokha pang'ono kuposa sitepe zina, koma nthawi yosakanikirana ya fakitale ya fakitaleyo idayesedwa kuti ikhale 212. Nditapita ku tsamba lomanga kuti ndikatsikire kagalimoto konkriti, ndinapeza kuti galimotoyo sinathe kutsitsa konkriti. Ndinadziwitsa fakitale kuti nditumize mbiya. Pambuyo pochepetsa madzi atawonjezeredwa ndikusakanikirana, kuwoneka komwe kaonedwe kali ndi 160mm, zomwe zimakumana ndi zofuna kupondereza. Komabe, panthawi yotsitsa, zimawoneka kuti sizingatulutsidwe. Track ya konkritiyo idabwezeretsedwanso ku fakitole, ndipo madzi ambiri ndi ochepa ochepetsa adawonjezeredwa. Wothandizira madziwo sanatulutsidwe ndipo pafupifupi adakhazikika mu galimoto yosakanizira.
Kusanthula Mwachidule:Sitinaumire kuyesa mayeso osinthira ndi ma Admixtives pa chingwe chilichonse musanatsegule.
Kupewa:Khazikitsani mayeso ophatikizira ndi zomangamanga zosakanikirana pagawo lililonse lisanatsegulidwe. Sankhani ma Adminires oyenera. "GAngae" monga kuphatikizika kwa simenti sikusintha kwambiri kusinthidwa kwa polycarboxtlate superplastizerMankhwala ochepetsa madzi, choncho pewani kugwiritsa ntchito.
2.Sality amadzamwa madzi
Chifukwa cha kugwiritsa ntchitoPolycaxtlate Madzi ochepetsa madzi, kumwa kwa sizete kumachepa kwambiri. Kumwa madzi konkire imodzi konkriti nthawi zambiri kumakhala ndi 130-165kg; Chiwerengero cha madzi ndi 0.3-0.4, kapena ochepera 0,3. Pankhani ya kugwiritsa ntchito madzi otsika, kusinthasintha m'madzi kumatha kusintha kwakukulu pakutsika, ndikupangitsa kusakaniza konkriti kuti muwonjezere mwadzidzidzi ndikutulutsa magazi.
PHOMENEN:Malo osakanikirana amagwiritsa ntchito P-032.5R simenti kuchokera ku fakitale inayake kuti akonzekere simenti ya C30. Mgwirizanowu umafuna kuti kutsika kwa malo omanga ndi 150mm: T30mm. Chumacho chitatulutsa fakitale, choyenga chimayesedwa ndi 180mm. Atapita kumalo omanga, konkriti imayesedwa pamalo omanga. Kulumala kunali kwa 21om, ndipo magalimoto a konkriti adabwezeretsedwa motsatizana. Pobwerera ku fakitaleyo, zidatsimikiziridwa kuti kutsika kwake kunali kwa 21mm, ndipo kunali magazi ndi kufooka.
Chifukwa:Sime iyi ili ndi kusinthasintha kwa mankhwala ochepetsa madzi awa, ndipo kuchuluka kwa mankhwala ochepetsa madzi kumakhala kokulirapo pang'ono. Nthawi yosakanikirana sikokwanira, ndipo kutsika kwa konkriti mukasiya makinawo siwotsika kwenikweni chifukwa cha nthawi yayifupi.
Kupewa:Kwa simenti yomwe imakhudzidwa ndi mlingo wa polycarboxtlatesuperplastizerKuchepetsa masilidwe amadzi, mlingo wa akwati ayenera kukhala woyenera ndipo muyeso wolondola uyenera kukhala wokwera. Kukulitsa nthawi yosakanikirana. Ngakhale ndi mapasa osakanizika, nthawi yosakanikirana siyenera kukhala yochepera masekondi 40, makamaka masekondi 60.
Post Nthawi: Jan-15-2024
