Concrete chinhu chikuru chekugadzirwa kwevanhu.Kubuda kwekongiri kwatanga shanduko munhoroondo yezvivakwa zvevanhu.Iko kushandiswa kwekongiri admixtures ndiko kuvandudza kukuru mukugadzirwa kwekongiri.Kubuda kweiyo concentrated kongiri batching.
zvidyarwa zvaita kuti kugadzirwa kwezvinhu zvekuvaka kongiri kufambire kumugwagwa weindasitiri nekuchengetedza.Izvi zvinoisawo mberi zvimwe zvinodikanwa pakutonga kwemhando yekugadzirwa kwekongiri, zvichikonzera kuvandudzwa kwese kwekongiri yemhando mumakore achangopfuura.Panguva imwecheteyo, nekuda kweiyo yakaderera nhanho yemhando yekudzora tekinoroji mune imwe kongiri yakagadzirira-musanganiswa zvirimwa, yakaunza njodzi dzakavanzika kumhando yeprojekiti, uye yakatooneka.Tsaona yemhando yeinjiniya isati yasangana mumakore anopfuura makumi maviri yakonzera kurasikirwa kwakanyanya kwehupfumi.
Izvo zvikuru zvinhu zvinokonzeresa kusawirirana pakati pemixtures uye simenti:
Kuitwa kwekongiri kunoenderana kwete chete nebasa rezvinoumba zvinhu, asiwo pakuchinja pakati pezvinhu uye kongiri musanganiswa ratio.Admixtures (mvura inoderedza) haienderane nesimende, ndiko kuti, masanganiswa haanyanyi kuvandudza kushanda kwesimende, kurasikirwa kwekongiri kwakakura kwazvo kana kongiri inokurumidza kugadzika, uye kunyange kuputika kunowanzo kuitika. mune kongiri structural nhengo.
Sechikamu chechishanu chekongiri, admixture accounts yechikamu chidiki, asi ine simba guru pakuita kwekongiri, iyo inogona kuvandudza zvakanyanya kudonha kwekongiri uye kugadzirisa iyo coagulation nguva, nekudaro kuvandudza kushanda kwekongiri kuvaka kana kuchengetedza mari. .Iyo hydration reaction ye simenti inoda isingasviki 25% yemvura yesamende yakawanda, asi kana simende ikasangana nemvura, inoumba flocculation chimiro chekuputira mvura mairi.Kuwedzerwa kwekusanganiswa kunogona kutungamira adsorption pamusoro pezvikamu zvesimende, kuitira kuti pamusoro pezvikamu zvesimende zvive nemutero wakafanana, unoparadzaniswa nekuda kwekugadzirisa, nekudaro kusunungura mvura yakaputirwa ne simenti flocculation structure, saka. kuti mvura yakawanda inogona kubatanidzwa mune hydration reaction., kunatsiridza basa.Ukuru hwekushambadza kwesamende zvimedu kune admixture uye kurasikirwa kwemaitiro ekugadzirisa kunoratidza kushanduka kwekugadzirisa kune simenti.
Dambudziko rekusapindirana pakati pe admixtures uye simende idambudziko rinoshungurudza uye kutemwa nemusoro kune vese vanogadzira kongiri vanogadzira.Mushure mekunge dambudziko raitika, rinozopomerwa pane admixture.Kusapindirana pakati pemusanganiswa uye simenti kunokonzerwa nemusanganiswa pachayo.Zvinhu zvemhando uye kuumbwa kwemakemikari, asi chikonzero chikuru chinowanzoenderana nezvinhu zvakaita sesimende uye musanganiswa, ingave iri yakajairwa yekudzikisa mvura mumiriri, nylon-based superplasticizer kana yechitatu-chizvarwa polycarboxylic acid-based superplasticizer ichaonekwa.
Nguva yekutumira: Jul-19-2022