Izongezo zeConcrete eziKhala | Ii-Agents eziFoaming eziSebenza ngokuPhezulu kwiSellula Concrete
Iiprojekthi zophando ezahlukeneyo ziye zaqhutywa ukufunda iimpawu zomatshini wekhonkrithi yogwebu. Baye babonakalisa i-microstructure yekhonkrithi ye-foam kwaye baphucula iimpawu zalo mbandela. Olu phononongo lulandelayo luphanda iziphumo zoxinaniso lwesampulu kwiimpawu zomatshini zekhonkrithi yogwebu.
Ikhonkrithi ye-foam yinto ekhaphukhaphu ene-fluidity ephezulu kunye neempawu zokugquma kwe-thermal. Kananjalo inamandla aphezulu kumlinganiselo wobunzima, ukufikeleleka okuphantsi, kunye nokumelana nomlilo okulungileyo. Yimathiriyeli yoxinaniso oluphantsi, enobunzima obungaphantsi kwamawaka amabini eeponti ngecubic foot nganye. Ubukhulu becala yenziwe ngesanti, isamente, amanzi, kwaye ubhabha uthuthu. Ubuninzi bekhonkrithi ye-foam buxhomekeke kubungakanani bezi zithako ezisisiseko kunye nolawulo lokuxuba.
Iimpawu zomzimba ze-M-2, umxube womxube oqulethe uthuthu lwempukane kunye nesamente, ziboniswe kwiThebhile 8. Amandla, amandla oxinzelelo, kunye nokuqina kwempembelelo ye-M-2 ehambelana nezinga loxinzelelo. Awona mandla okugqibela acinezelayo kunye nomthamo wokufunxa amandla onyukile ngoxinaniso.
Ukuqina kwempembelelo ye-M-2 kubonise ukulungelelaniswa okuqinileyo kunye nexabiso eliphezulu loxinzelelo. Ixabiso eliphezulu loxinzelelo lonyukile ngokunyuka kwesantya soxinzelelo kunye nesantya sempembelelo. Amandla oxinzelelo oluguquguqukayo anxulunyaniswa nesantya soxinzelelo xa 10-100 s-1. Ubudlelwane phakathi kwesantya soxinzelelo kunye namandla aguqukayo okugqibela acinezelayo ayefana nalawo ekhonkrithi yemveli.
Iimpawu zesakhiwo sekhonkrithi yogwebu zaphandwa kusetyenziswa i-electron microscopy yokuskena. Imifanekiso ifunyenwe kusetyenziswa iQuanta 250 FEG (Applied Precision Ltd., Bratislava, Slovakiya) isebenza kwimowudi yevacuum esezantsi. Obu buchule bubonelele ngemifanekiso eneenkcukacha yeesampulu ezingezizo zokuqhuba ngaphandle kwemfuneko yokwaleka kwe-sputter.