Sashi da amfani da ruwa na polycarboxylate superplasticizer:

Polycarboxylate superplasticizeryana da halaye na ƙananan sashi da babban raguwar ruwa. Lokacin da adadin ya kasance 0.15-0.3%, ƙimar rage ruwa zai iya kaiwa 18-40%. Duk da haka, lokacin da rabon ruwa-da-daure yana da ƙananan (a ƙasa 0.4), sashi yana da mahimmanci fiye da lokacin da rabon ruwa ya yi girma. Yawan rage ruwa napolycarboxylate superplasticizerya bambanta da adadin siminti. A karkashin yanayi guda, yawan rage ruwa na adadin simintin da ke ƙasa da 3 bai wuce 400kg / m3 ba, kuma ana watsi da wannan bambanci cikin sauƙi. Duk da haka, a cikin aiwatar da amfani, za a gano cewa wannan al'ada empirical hanya ba dace daPolycarboxylate superplasticizer, musamman sabodaPolycarboxylate superplasticizersun fi kula da shan ruwa fiye da na gargajiya superplasticizers. Lokacin da aka rage yawan amfani da ruwa, ba za a iya samun aikin da ake tsammani na kankare ba; lokacin da yawan ruwa ya yi yawa, ko da yake raguwa ya zama mafi girma, za a sami zubar da jini mai yawa har ma da ɗan rabewa, wanda yana da mummunar tasiri a kan aikin simintin gaba ɗaya. Wannan zai haifar da matsala mai yawa a ainihin ginin wurin. Zazzabi yana da tasiri mai girma akan adadinpolycarboxylate superplasticizer. A aikace, an gano cewa adadin admixture da ake amfani da shi a cikin samar da al'ada a lokacin rana yana da ƙasa da dare (zazzabi yana da ƙasa da 15 ℃), kuma slump yakan faru "Koma zuwa babba", har ma da zubar da jini da rabuwa.

Kankare yana da ɗabi'a sosai game da ma'aunin jikewa da amfani da ruwa na wakili na rage ruwa. Da zarar yawan adadin ya wuce, simintin zai bayyana abubuwan da ba su dace ba kamar su rabuwa, zub da jini, slurry gudu, tauri da wuce kima abun ciki na iska.

(1) Ya kamata a sake yin gwajin gwajin gwajin gwaji tare da sauye-sauyen albarkatun kasa don daidaita sashi don cimma sakamako mafi kyau;

(2) Yawan adadinpolycarboxylate superplasticizerkuma dole ne a kula da yawan ruwa na kankare yayin amfani;

(3) A cikin gwajin kankare na wakili na rage ruwa don albarkatun kasa, yi ƙoƙarin daidaita ma'aunin rage ruwa zuwa nau'in "sluggish" don cimma manufar rashin kulawa da albarkatun kasa da amfani da ruwa.