Tsiku Lotumiza:30,Jan,2023
The anatengera ndi zosemphana pakati otchedwa konkire admixture ndi simenti akhoza kuganiziridwa motere: Pamene kupanga konkire (kapena matope), malinga ndi specifications luso konkire admixture ntchito, admixture ena amene anayendera kuti akwaniritse mfundo zoyenera angathe. 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 zochepetsera madzi, ndi zina zonse ndizofanana, pali Konkire imodzi yokonzedwa kuchokera ku simenti ili ndi kuchepa kwakukulu mu Kuchepetsa madzi simenti alibe vutoli Choncho, tingaone kuti simenti si koyenera kwa superplasticizer, ndi simenti mkulu-mwachangu kuchepetsa madzi. Mwachitsanzo, pamene konkire yokonzedwa mu simenti ina imasakanizidwa ndi coagulant yofulumira (yoyesedwa kuti ikwaniritse miyezo yoyenera), koma zotsatira zofulumira sizipezeka, Kuonjezera retarders sapeza zotsatira zoyenera, zonse zabwino zimaganiziridwa. zosagwirizana pakati pa zosakaniza 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 wothandizira, ndi bwino simenti particles, yaikulu yeniyeni pamwamba m'dera, ndiko kuti, madzi kuchepetsa wothandizira mamolekyu. Kuchuluka kwa adsorption ndikokulirapo. Chifukwa chake, pankhani ya kuchuluka komweko kwa wochepetsera madzi, kupangika kwa pulasitiki kumakhala koyipa 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 imakhalanso mofulumira. Choncho, pamene zomera zina zopangira konkire zamalonda zimagwiritsa ntchito konkire yomwe yangophwanyidwa ndipo imataya kutentha, kuchepetsa madzi kumakhala kochepa ndipo kutayika kwamadzi kumathamanga kwambiri. Ngakhale kuoneka mu blender Chang condensation zina zotero, tiyenera kulabadira ndi kupewa.
Nthawi yotumiza: Jan-30-2023
