Tsiku Lotumiza:30,Jan,2023
The anatengera ndi zosemphana pakati otchedwa konkire admixture ndi simenti akhoza kuganiziridwa motere: Pamene kupanga konkire (kapena matope), malingana ndi specifications luso konkire admixture ntchito, admixture ena kuti anayendera kukumana mfundo zofunika akhoza kuwonjezeredwa ku malamulo.Ngati simenti yogwiritsira ntchito kusakaniza kwa mitundu yosiyanasiyana imatha kupanga zomwe mukufuna, simentiyo imagwirizana ndi kusakaniza.M'malo mwake, ngati zotsatira zake sizinapangidwe, simenti ndi zosakaniza sizili Zoyenera.Mwachitsanzo, superplasticizer ya konkire imawonjezedwa ku konkire yokonzedwa kuchokera ku simenti zisanu za Portland (zoyesedwa kuti zikwaniritse zofunikira zazitsulo zochepetsera madzi, ndi zina zonse ndizofanana, pali Konkire imodzi yokonzedwa kuchokera ku simenti ili ndi kuchepa kwakukulu mu Mlingo wochepetsera madzi.Masimenti ena alibe vutoli.Choncho, zitha kuganiziridwa kuti simenti iyi si yoyenera kwa superplasticizer, ndi simenti zina.Njira yochepetsera madzi yopambana kwambiri ndiyoyenera.Mwachitsanzo, konkire ikakonzedwa mu simenti ina imasakanizidwa ndi coagulant yothamanga (yoyesedwa kuti ikwaniritse miyezo yoyenera), koma zotsatira zofulumira sizipezeka, Kuonjezera retarders sapeza zotsatira zochepetsetsa, zonse zabwino zimaganiziridwa kuti sizigwirizana pakati pa admixtures ndi simenti.
Tinthu tating'ono ting'onoting'ono ta simenti timakhala ndi ma adsorption amphamvu ku mamolekyu ochepetsa madzi.Mu simenti slurry ndi madzi kuchepetsa wothandizila, bwino simenti particles, yaikulu yeniyeni pamwamba m'dera, ndiko kuti, madzi kuchepetsa wothandizira mamolekyu.Kuchuluka kwa adsorption ndikokulirapo.Chifukwa chake, ngati kuchuluka komweko kwa wochepetsera madzi, mphamvu ya pulasitiki imakhala yoyipa kwambiri kwa simenti yokhala ndi zabwino zambiri.
Tsopano ena opanga simenti amakonda kupititsa patsogolo mphamvu ya simenti.Pakuti fineness simenti, kuti tikwaniritse bwino plasticizing zotsatira, m'pofunika kuonjezera kuchuluka kwa madzi kuchepetsa wothandizira.Mwatsopano ndi kutentha kwa simenti ndi kwatsopano, ndi plasticizer wa madzi kuchepetsa wothandizila Kusiyana kofanana ndi koipa.Izi zili choncho chifukwa mphamvu yamagetsi ya simenti yatsopano imakhala yamphamvu ndipo mphamvu yochepetsera madzi ndiyokulirapo.Kukwera kwa kutentha kwa simenti, kumapangitsanso kuti pulasitiki ikhale yochepetsera madzi.The slump imfa ndi mofulumira.Choncho, pamene zomera zina zopangira konkire zamalonda zimagwiritsa ntchito konkire yomwe yangophwanyidwa ndikutaya kutentha, kuchepetsa madzi kumakhala kotsika ndipo kutayika kwamadzi kumathamanga kwambiri.Ngakhale kuoneka mu blender Chang condensation zina zotero, tiyenera kulabadira ndi kupewa.
Nthawi yotumiza: Jan-30-2023