1. Impembelelo yomxube:
I-concrete ephezulu yokusebenza ine-slag efanelekileyo kunye nomthamo omkhulu we-fly ash kwi-admixture, kodwa utshintsho kwi-fineness kunye nomgangatho we-admixture inempembelelo enkulu ekusebenzenii-agent yokunciphisa amanzi e-polycarboxylate.Umgangatho we-admixtures ongahambelani neemfuno uya kuchaphazela kakhulu imeko yekhonkrithi entsha. Ngokuqhelekileyo, ukuguquguquka kwe powder yamaminerali kulungile, kodwa umlinganiselo wokuxuba mkhulu kakhulu kwaye kulula ukopha. Uthuthu lwe-fly kufuneka lulawulwe ngokungqongqo ukuhlangabezana neemfuno zenqanaba lesibini nangaphezulu, kunye nenqanaba lesibini lothuthu lunokunciphisa ngokuphawulekayo izinga lokunciphisa amanzi e-admixtures.
2. Iimpembelelo zedosi yokunciphisa amanzi kunye nokusetyenziswa kwamanzi:
Kwizicelo ezisebenzayo, kukho ingxaki yedosi echanekileyo yayo nayiphi na i-arhente yokunciphisa amanzi. I-dosage ekhethiweyo ixhomekeke kuhlobo lwesamente, ubungakanani besamente kunye nomgangatho we-admixture. Phambi kokusetyenziswa kobunjineli, kuyafuneka ukuba kufunyaniswe elona thamo liphezulu kunye nokusetyenziswa kwamanzi ngokufanelekileyo (umlinganiselo wokubopha amanzi)polycarboxylicsi-agent yokunciphisa amanzi ye-uperplasticizerngokuxuba ukuvavanya ngokuphindaphindiweyo ngokwemiqathango yesamente kunye ne-admixtures. Kwisicelo sobunjineli, qaphela ingqalelo kwi-glue Guqula izinto eziphathekayo, kwaye ulungelelanise i-dosage kancinane ngokwenguqu, ukwenzela ukuba ikhonkrithi entsha ifikelele kwisimo esifunekayo.
3. Iimpembelelo ze-aggregate:
Isalathisi sodaka lwesanti sinempembelelo enkulu ekusebenzeni kwe-ejenti yokunciphisa amanzi, ngokukodwa umxholo wodaka lwesanti. Xa umxholo wodaka ungaphezu kwe-3%, ukusebenza kwe-arhente yokunciphisa amanzi kuyancipha kakhulu. Kunzima ukufumana ulwelo olwanelisayo ngokunyusa ngokufanelekileyo umxholo. Kwi-C30 i-cast-in-place imfumba ikhonkrithi yeprojekthi eJinan, xa umxholo wepolycarboxylicsi-agent yokunciphisa amanzi ye-uperplasticizer(i-nofas) yi-1.0%, inokuhlangabezana ne-fluidity kunye nokwandiswa okufunwa yiprojekthi. Nangona kunjalo, kwizicelo ezisebenzayo, ngenxa yodaka oluphezulu lwesanti kunye negrabile (ingakumbi isanti), ubumanzi bekhonkrithi budla ngokuhla xa kuxutywa. Ngokuqhelekileyo, le ngxaki ingasombululwa ngokunyusa ngokufanelekileyo umxholo we-agent yokunciphisa amanzi. Kodwa xa umxholo we-ejenti yokunciphisa amanzi inyuka kwixabiso elithile, isengakwazi ukuhlangabezana neemfuno. Ezinye izenzo zokwakha zibonisa ukuba xa umxholo wodaka ungaphezulu kwe-3%, impembelelo kwi-arhente yokunciphisa amanzi ibonakala, kodwa xa umxholo wodaka ukhulu kune-5%, ukwandisa nje umxholo we-arhente yokunciphisa amanzi ayikwazi ukucombulula. ingxaki.
Ukongezelela, impembelelo yokuhlelwa kwamatye kunye nomthamo wee-flakes ezifana nenaliti kwipolycarboxylicsiplasticizernayo icacile. Ngaphantsi komlinganiselo ofanayo, umthamo onjengenaliti yelitye uyanda, okunciphisa umbane kunye nokwandiswa kwekhonkrithi, kwaye ulungele ukuphuma kwegazi kunye neengxaki zokwahlula. Ukongeza ekuhlengahlengiseni ngokugqithisileyo umlinganiselo wokuxuba wekhonkrithi, kunzima ukufezekisa iziphumo ezanelisayo kuphela ngokuguqula umxholo okanye umxholo womoyai-agent yokunciphisa amanzi e-polycarboxylate.
Ixesha lokuposa: Jan-05-2022
