Umhla wokuThumela:27,Juni,2023

1. Umba wokusetyenziswa kwamanzi
Kwinkqubo yokulungiselela ikhonkrithi ephezulu yokusebenza, ingqalelo kufuneka ihlawulwe ekukhetheni i-slag efanelekileyo kunye nokongeza inani elikhulu le-fly ash. I-fineness ye-admixture iya kuchaphazela i-ejenti yokunciphisa amanzi, kwaye kukho iingxaki ngomgangatho we-admixture, oya kuchaphazela ngokuqinisekileyo ukusebenza kwekhonkrithi. Ukuba ukulungelelaniswa kwe-slag kulungile, umlinganiselo we-admixture akufanele ube mkhulu kakhulu, ngaphandle koko kunokwenzeka ukuba kubangele iingxaki zokuphuma kwegazi. Kuyimfuneko ukulawula umlinganiselo we-fly ash kwikhonkrithi ukuqinisekisa ukuba i-arhente yokunciphisa amanzi idlala indima engcono.

2. Umba wemali yokuxuba
Ukwabiwa okufanelekileyo kwe-fly ash kunye ne-slag kunokuphucula ukusebenza kwekhonkrithi, ukunciphisa ukusetyenziswa kwesamente kulwakhiwo lobunjineli, kunye nokunciphisa iindleko zezinto eziphathekayo. Ubuhle kunye nomgangatho we-admixture uya kuchaphazela ukusebenza kwe-arhente yokunciphisa amanzi. Ukuphucula ukusebenza kwekhonkrithi kufuna iimfuno ezithile zokulunga kunye nomgangatho we-admixture. Kwinkqubo yokumisela ikhonkrithi ephezulu, ukusetyenziswa kwe-slag powder kwi-admixture kunokuphucula ukusebenza kwayo. Isixa se-admixture kufuneka siqwalaselwe ngokufanelekileyo ngokwemeko yobunjineli bokwenene, kwaye idosi kufuneka ilawulwe.

3. Umba wedosi ye-arhente yokunciphisa amanzi
Ukusetyenziswa kwee-arhente zokunciphisa amanzi kwikhonkrithi yezorhwebo kufuna ukuqonda ngokwesayensi ubungakanani be-agent yokunciphisa amanzi esetyenzisiweyo kunye nokulawulwa okufanelekileyo komlinganiselo wabo. Khetha iintlobo ezahlukeneyo zokunciphisa amanzi ngokusekelwe kuhlobo lwesamente kwikhonkrithi. Kwiiprojekthi zokwakha, idosi yee-arhente zokunciphisa amanzi kufuneka imiselwe emva kovavanyo oluninzi ukufumana elona lizwe lilungileyo.

4.Imiba edityanisiweyo
Ii-aggregates ezisetyenziswa kwikhonkrithi kufuneka zivavanywe kwiimbono ezininzi, kunye nezalathi zovavanyo eziphambili ezibandakanya imilo, ukuhlelwa kwamasuntswana, ubume bomphezulu, umxholo wodaka, umxholo wodaka lwekhonkrithi, kunye nezinto ezinobungozi eziqulethwe. Ezi zalathi ziya kuba nempembelelo ethile kumgangatho wee-aggregates, kwaye ingqalelo ekhethekileyo kufuneka ihlawulwe kumxholo wodaka. Umxholo weebhloko zodaka kwikhonkrithi awukwazi ukudlula i-3%, ngaphandle koko nangona i-agent yokunciphisa amanzi yongezwa, umgangatho wekhonkrithi awukwazi ukuhlangabezana nomgangatho. Ngokomzekelo, iprojekthi ethile yokwakha isebenzisa i-C30 ye-cast-in-place ye-concrete ye-concrete. Ngethuba lenkqubo yokuxuba ukuvavanya kwekhonkrithi, xa umlinganiselo we-ejenti yokunciphisa amanzi yi-1%, unokuhlangabezana neemfuno zobunjineli, kubandakanywa umbane, ukwanda kwe-slump, njl. iimfuno zobunjineli okanye ukuhlangabezana nemigangatho echaziweyo. Emva kokuhlolwa kweengcali kunye nokuhlalutya, kwagqitywa ukuba isizathu esona sizathu salo mcimbi kukuba umxholo wodaka kwi-fine aggregate idlula i-6%, echaphazela umphumo wokunciphisa amanzi. Ukongeza, iimilo ezahlukeneyo zamasuntswana ahlanganisiweyo adibeneyo zinokuchaphazela umphumo wokunciphisa amanzi we-arhente yokunciphisa amanzi. Ubumanzi bekhonkrithi buya kuncipha ngokunyuka kwezixhobo kunye neeaggregates ezirhabaxa. Emva kohlalutyo lwesayensi, akwanele ukuthembela kuphela kwii-agent zokunciphisa amanzi ukuphucula umphumo osebenzayo wekhonkrithi kunye nokwandisa amandla ayo. Kuyimfuneko ukunyusa umxube wekhonkrithi ukuze kuphunyezwe iziphumo ezilungileyo.