Dosage uye kushandiswa kwemvura kwepolycarboxylate superplasticizer:

Polycarboxylate superplasticizerine hunhu hwekuderera dosage uye kuderera kwemvura yakakwira. Kana muyero uri 0.15-0.3%, mvura-inoderedza mwero inogona kusvika 18-40%. Zvisinei, kana chiyero chemvura-ku-binder chiri chiduku (pasi pe 0.4), muyero wacho unonyanya kuoma kupfuura apo mvura-binder ratio yakakwirira. Mwero wekudzikisa mvura wepolycarboxylate superplasticizerinosiyana nehuwandu hwesimende. Pasi pemamiriro akafanana, chiyero chekudzikisa mvura yehuwandu hwemasimende zvinhu zvisingasviki 3 iri pasi pe400kg / m3, uye musiyano uyu unoregererwa nyore nyore. Nekudaro, mukuita kwekushandisa, zvinozoonekwa kuti iyi yechinyakare empirical nzira haina kukodzeraPolycarboxylate superplasticizer, kunyanya nokutiPolycarboxylate superplasticizervanonzwa zvakanyanya pakushandiswa kwemvura pane zvechinyakare superplasticizers. Apo kushandiswa kwemvura kunoderedzwa, iyo inotarisirwa kushanda kwekrete haigoni kuwanikwa; apo kushandiswa kwemvura kwakakwirira, kunyange zvazvo kudonha kunova kukuru, kuchava nekubuda ropa kwakawanda uye kunyange kupatsanurwa kuduku, uko kune kukanganisa kwakashata pakushanda kwese kwekrete. Izvi zvichakonzera kusagadzikana kwakawanda mukuvakwa kwesaiti chaiko. Kupisa kune simba guru pahuwandu hwepolycarboxylate superplasticizer. Mukuita, zvinoonekwa kuti huwandu hwekusanganiswa hunoshandiswa mukugadzirwa kwakajairika mukati mezuva hwakaderera usiku (tembiricha yakaderera pane 15 ℃), uye kudonha kunowanzoitika "Dzokera kune hombe", kunyangwe kubuda ropa uye kupatsanurwa.

Concrete inosarudza zvakanyanya nezve saturation point uye kushandiswa kwemvura kwemugadziri wekudzikisa mvura. Kana iyo yakawandisa yadarika, kongiri ichaonekwa isingafadzi zviitiko sekupatsanurwa, kubuda ropa, slurry kumhanya, kuomesa uye kuwandisa kwemhepo.

(1) Muedzo wemusanganiswa wekuyedzwa unofanirwa kuitwa zvakare neyakachinjika mbishi zvinhu kugadzirisa dosi kuti iwane yakanakisa mhedzisiro;

(2) Chiyero chepolycarboxylate superplasticizeruye kushandiswa kwemvura kwekongiri kunofanira kunyatsodzorwa panguva yekushandiswa;

(3) Muyedzo yekongiri yemvura inodzikisa mumiriri wemidziyo yakasvibira, edza kugadzirisa mvura inodzikisa mumiriri kune "usimbe" rudzi kuti uwane chinangwa chekusava nehanya kune mbishi zvinhu uye kushandiswa kwemvura.