Izongezo zeConcrete eziKhala | Ii-Agents eziFoaming eziSebenza ngokuPhezulu kwiSellula Concrete
Ikhonkrithi yinto eguqukayo etshintsha ukuhambelana kwayo kunye nexesha. Ukusebenza kwekhonkrithi entsha kuncipha ngexesha lenkqubo ye-hydration, ukuthutha kunye nokubekwa kwindawo yokusebenza. Le nkqubo ichazwa njengelahleko yokudilika.
ilahleko yokudilika kwikhonkrithi yingxaki edla ixesha kunye nemali kwikontraka ebeka ikhontrakthi. Ukulahleka kwe-slump kubangela ubunzima ekubekeni ikhonkrithi kunye nokufezekisa ukugqiba okufunekayo. Ukoyisa oku, iikontraka zihlala zongeza amanzi kwindawo yokusebenzela ukwenza ikhonkrithi isebenze. Oku ayisiyonto ilungileyo kuba inefuthe elibi kumandla kunye nokuqina kwekhonkrithi.
Kweli nqaku siza kuxubusha izizathu eziphambili zoku ilahleko yokudilika kwikhonkrithi kunye neendlela zokuyiphepha. Into yokuqala ongayenza kukuvavanya umxube wekhonkrithi kwiimeko ezifanayo nezo zikwindawo yokwakha, oku kuya kuqinisekisa ukuba ukusebenza kwekhonkrithi kwisiza kuyahlangabezana neemfuno zoyilo.
Ixesha yeyona nto ibalulekileyo ekuqinisekiseni ilahleko yokuwohloka. Ngexesha lokujiya okucothayo okuqhelekileyo kwekhonkrithi ebizwa ngokuba kukusetwa, ngokuqhubekayo ilahlekelwa kukuwohloka kwayo phambi kokuba ukuqina kuqale. Ilahleko yokudilika okungaqhelekanga, nangona kunjalo, kwenzeka ngesantya esiphezulu kakhulu kunesiqhelo kwaye oku kubonakala ngathi kunyuswe kubushushu obuphezulu.
Enye indlela yokunciphisa ilahleko yokuwohloka kukongeza imixube edityanisiweyo, ngakumbi lignosulfonates. Le mixube inciphisa imfuno yamanzi ngokucothisa isantya sokuhamba kwamanzi kwaye ngoko yonyusa ukusebenza kwekhonkrithi. Kukwacetyiswa ukuba usebenzise iipolima zePCE, ezinokugcinwa kwe-slump engcono kune-PNS, PMS okanye LS superplasticizers.