Umhla wokuPoswa:30,Jan,2023
Ukulungelelaniswa kunye nokungahambelani phakathi kwezinto ezibizwa ngokuba yi-concrete admixture kunye ne-samente kunokuqwalaselwa ngolu hlobo lulandelayo: Xa uqulunqa ikhonkrithi (okanye udaka), ngokweenkcukacha zobugcisa zesicelo se-concrete admixture, i-admixture ethile ehlolwe ukuhlangabezana nemigangatho efanelekileyo ingakwazi. yongezwe kwimimiselo. Ukuba i-samente isebenzisa i-admixture yeentlobo ezahlukeneyo inokuvelisa umphumo oyifunayo, i-samente iyahambelana ne-admixture. Ngokuchasene noko, ukuba umphumo awuveliswanga, i-samente kunye ne-admixture ayifanelekanga. Umzekelo, i-superplasticizer yekhonkrithi yongezwa kwikhonkrithi elungiselelwe ukusuka kwiisamente ezintlanu eziqhelekileyo zasePortland (ivavanyiwe ukuhlangabezana neemfuno zemigangatho yokunciphisa amanzi asebenzayo, kwaye zonke ezinye izinto ziyafana, kukho enye Ikhonkrithi elungiselelwe kwisamente inokusilela okukhulu izinga lokunciphisa amanzi Ezinye iisimenti azinayo le ngxaki, ngoko ke, kunokuqwalaselwa ukuba le samente ayifanelekanga kwi-superplasticizer, kunye nezinye iisimenti I-agent ephezulu yokunciphisa amanzi ifanelekile isamente ethile ixutywe ne-coagulant ekhawulezayo (ivavanywe ukuhlangabezana nemigangatho efanelekileyo), kodwa isiphumo sokumisela ngokukhawuleza asifumaneki, Ukongeza i-retarders ayifumani isiphumo esifanelekileyo sokubuyisela, yonke i-OK ithathwa njengengahambelani phakathi kwe-admixtures kunye ne-samente.
Amasuntswana e-samente e-cement fineness ane-adsorption eyomeleleyo kwiimolekyuli ze-agent yokunciphisa amanzi. Kwi-sement slurry kunye ne-agent yokunciphisa amanzi, i-fineral particles ye-cement, inkulu indawo ethile, oko kukuthi, i-agent yokunciphisa amanzi. Umthamo we-adsorption nawo mkhulu. Ngoko ke, kwimeko yomlinganiselo ofanayo we-ejenti yokunciphisa amanzi, umphumo weplastiki ubi kakhulu kwi-samente ene-fineness ephezulu.
Ngoku abanye abavelisi besamente bakholisa ukuphucula amandla okuqala esamente. Ukulungiswa kwesamente, ukuze kufezekiswe umphumo ongcono weplastiki, kuyimfuneko ukwandisa inani le-arhente yokunciphisa amanzi. Ukutsha kunye nokushisa kwe-samente kutsha, kunye ne-plasticizer ye-agent yokunciphisa amanzi Umahluko ohambelanayo ubi nakakhulu. Oku kungenxa yokuba ipropathi yombane eqinisekileyo yesamente entsha yomelele kwaye umthamo we-adsorption we-arhente yokunciphisa amanzi mkhulu. Ukuphakama kweqondo lokushisa kwesamente, kubi kakhulu umphumo weplastiki we-arhente yokunciphisa amanzi. Ilahleko yokuwohloka nayo ikhawuleza. Ngoko ke, xa ezinye izityalo zokuvelisa ikhonkrithi zisebenzisa ikhonkrithi esandula kusilwa kwaye isaphulukana nobushushu, izinga lokunciphisa amanzi liphantsi kwaye ilahleko yokuwohloka ikhawuleza kakhulu. Nokuba avele blender Chang condensation njalo njalo, kufuneka sinikele ingqalelo kwaye kuphetshwe.
Ixesha lokuposa: Jan-30-2023
