Umhla wokuPoswa:2, Jan,2024
Ukusetyenziswa kwe-concrete admixtures kuphucula kakhulu iipropati zokuhamba kwekhonkrithi kunye nokunciphisa inani lezinto zesamente kwikhonkrithi.Ke ngoko, imixube yekhonkrithi isetyenziswa ngokubanzi.Kwinkqubo yokuvelisa ixesha elide, kuye kwafunyaniswa ukuba izikhululo ezininzi zokuxuba zinokungaqondani ekusebenziseni i-admixtures, okubangela ukungonelanga kwamandla ekhonkrithi, ukungasebenzi kakuhle, okanye iindleko ezixubeneyo zekhonkrithi ezigqithisileyo.
Ukuqonda ukusetyenziswa okuchanekileyo kwe-admixtures kunokunyusa amandla ekhonkrithi ngelixa ugcina iindleko zokuxuba zingatshintshi;okanye ukunciphisa iindleko zokuxuba ngelixa ugcina amandla ekhonkrithi;gcina umlinganiselo wamanzi-samente ungatshintshi , phucula ukusebenza kwekhonkrithi.
A.Ukungaqondi kakuhle okuqhelekileyo malunga nokusetyenziswa kwe-admixtures
(1) Thenga ii-admixtures ngamaxabiso aphantsi
Ngenxa yokhuphiswano oluqatha lwemarike, isikhululo sokuxuba sinolawulo olungqongqo lokuthengwa kwezinto ezikrwada.Izitishi zokuxuba zonke zinethemba lokuthenga izinto eziluhlaza ngexabiso eliphantsi, kwaye kuyafana nakwizinto ezixubeneyo zekhonkrithi.Izitishi zokuxuba ziqhuba ixabiso lokuthengwa kwee-admixtures, eziya kubangela ukuba abavelisi be-admixture banciphise umgangatho wabo.Ngokuqhelekileyo, imilinganiselo yokwamkelwa kwee-admixtures ayifane ichazwe kwiikontraka zokuthengwa kwezityalo zokuxuba.Nokuba kukho, kuhambelana kuphela neemfuno zomgangatho wesizwe, kwaye iimfuno zomgangatho wesizwe ngokuqhelekileyo ziyimigangatho ephantsi.Oku kukhokelela ekubeni xa abavelisi be-admixture bephumelela ibhidi ngexabiso eliphantsi, i-admixtures ababonelela ngayo ikumgangatho ophantsi kwaye ngokubanzi ihlangabezana neemfuno zomgangatho wesizwe, okwenza kube nzima ukuhlangabezana neemfuno zokusebenza zesikhululo sokuxuba ukusetyenziswa kwe imixube.
(2) Ukunciphisa inani lezongezo
Inqanaba lokuthatha isigqibo sesikhululo sokuxuba libeka esweni ngokungqongqo ixabiso lomxube wexabiso, kwaye lineemfuno ezicacileyo kwidosi yesamente kunye nedosi ye-admixture.Oku kuya kukhokelela ekubeni isebe lobuchwephesha lingabi nabuganga bokutyhoboza kuluhlu lokuthatha izigqibo's ubuninzi beemfuno zedosi yezongezo xa kuyilwa umlinganiselo womxube.
(3) Ukunqongophala komgangatho wokubeka iliso kunye nokuqinisekiswa kokulungiswa kwesilingo se-admixtures
Okwangoku, ukuhlolwa kokugcinwa kwee-admixtures, izikhululo ezininzi zokuxuba ziqhuba enye okanye ezimbini zezibonakaliso zezobugcisa ezifana nomxholo oqinileyo, izinga lokunciphisa amanzi, ukuxinana, kunye ne-fluidity ye-slurry ecocekileyo.Izikhululo zokuxuba ezimbalwa zenza iimvavanyo eziphathekayo.
Kwimveliso yokuvelisa, safumanisa ukuba nangona umxholo oqinileyo, izinga lokunciphisa amanzi, ubuninzi, ubuninzi kunye nezinye izibonakaliso zobugcisa ze-admixture ziyahlangabezana neemfuno, uvavanyo lwekhonkrithi lusenokuthi lungakwazi ukufikelela kwisiphumo somxube wokuqala wovavanyo, oko kukuthi, Izinga lokucutha amanzi eliphathekayo akonelanga., okanye ukungakwazi ukuziqhelanisa neemeko.
B. Impembelelo yokusetyenziswa okungafanelekanga kwee-admixtures kumgangatho wekhonkrithi kunye neendleko
Ngenxa yezinga eliphantsi lomgangatho we-admixtures ezithengiweyo ngamaxabiso aphantsi, ukwenzela ukuba kuphunyezwe iziphumo ezaneleyo zokunciphisa amanzi, amasebe obugcisa ahlala enyusa umthamo we-admixtures, okubangelwa ukudibanisa okuphantsi kunye neenjongo ezininzi.Ngokuchasene noko, ezinye izikhululo zokuxuba ezinolawulo oluzinzileyo lomgangatho kunye nolawulo olungcono lomxube weendleko zisebenzisa i-admixtures yomgangatho ongcono kunye namaxabiso aphezulu.Ngenxa yokuba umgangatho ophezulu kwaye ungaphantsi kokusetyenziswa, ixabiso leyunithi ye-admixtures liyancipha.
Ezinye izitishi zokuxuba zinciphisa inani le-admixtures.Xa i-concrete yekhonkrithi ingonelanga, isebe lobugcisa liya kunciphisa umthamo wokufuma kwesanti kunye nelitye, okanye ukwandisa ukusetyenziswa kwamanzi ngeyunithi yekhonkrithi, eya kubangela ngokuthe ngqo ukuhla kwamandla ekhonkrithi.Amasebe obuchwephesha anengqondo eqinileyo yomgangatho aya kwandisa ngokungathanga ngqo okanye ngokuthe ngqo usetyenziso lwamanzi oluhlangeneyo lwekhonkrithi kwaye kwangaxeshanye anyuse ngokufanelekileyo ubungakanani bezinto zesamente (ukugcina umlinganiselo wesamente ungatshintshanga), okukhokelela ekunyukeni kweendleko zesamente. umlinganiselo womxube wekhonkrithi.
Isikhululo sokuxuba asinakho ukubeka iliso komgangatho kunye nokuqinisekiswa kokulungiswa kovavanyo lwee-admixtures.Xa umgangatho wezongezo uguquguquka (uyancipha), isebe lobugcisa lisasebenzisa umlinganiselo womxube wokuqala.Ukuze kuhlangatyezwane neemfuno zokuthotywa kwekhonkrithi, ukusetyenziswa kwamanzi okwenene kwekhonkrithi kwanda, umlinganiselo wamanzi-samente uyanda, kwaye amandla ekhonkrithi ayancipha.
Ixesha lokuposa: Jan-02-2024