Iyo nguva yekugara yekongiri inguva yakakosha paramende inokanganisa hunhu hwekuvaka uye kufambira mberi. Kana nguva yekugara yakanyanyisa, inogona kutungamira mukufambira mberi kwekuvaka uye kukuvadza maitiro akaomesesa kongiri; Kana nguva yekuisa ipfupi kwazvo, inogona kutungamira kumatambudziko mukuvaka kongiri uye kukanganisa maitiro ekuvaka epurojekiti. Kuti ugadzirise nguva yekugara yekongiri, kushandiswa kwezvibvumirano kwave kuitawo nzira yakajairika mukugadzirwa kwemazuva ano konkrete.HydroxytHyl methyl cellulose (hemc), Sezvinowanzoitika mwejohwe akashandurwa, anoshandiswa zvakanyanya muzvikamu zvekongiri uye anogona kukanganisa rheology, kuchengetwa kwemvura, kurongedza nguva nezvimwe zvinhu zvekongiri.1. Zvekutanga zvivakwa zve hemc
Hemc ishandiso yakagadziridzwa cellulose, kazhinji yakagadzirwa kubva kune yakasikwa cellulose kuburikidza neinjineti uye methylation maitiro. Iyo ine yakanaka mvura solubility, kuchengetwa kwemvura, nekuchengetwa kwemvura uye kugeza zvivakwa, saka zvinoshandiswa zvakanyanya mukuvaka, kuungana, makemikari emazuva ese uye mamwe minda. Muongongori, hemc inowanzo shandiswa seanotenderera, kudzokorora kwemvura uye rheology yekudzora mumiriri, iyo inogona kuvandudza kushanda kwekongiri, kuwedzera kuderedza uye kuwedzera nguva yekugara.
2. Mhedzisiro yeHemc pane iyo nguva yekuisa kongiri
Kunonoka kuronga nguva
Semunhu cellulose derivative, hemc ine nhamba huru yemapoka ehydrophic mune yayo molecular chimiro kuti iite mahonyarita akagadzikana, nekudaro achinyadzisa hydration maitiro kune imwe nhanho. Iyo hydration yakaitwa simendi ndiyo yakakosha yekusimbisa kongiri, uye kuwedzera kweHemc kunogona kukanganisa nguva kuburikidza nenzira inotevera:
Kuwedzerwa Kwekuchengetwa Kwemvura: Hemc inogona kuvandudza zvakanyanya kuchengetedza kwemvura yekuchengetwa kwemvura, kuderedza mwero wemvura, uye kuwedzera nguva yeiyo siment hydration maitiro. Kuburikidza nekuchengetwa kwemvura, hemc inogona kudzivirira kurasikirwa kwemvura, nekudaro kunonoka kuitika kwekutanga uye kwekupedzisira kurongeka.
Kuderedza Hydration Kupisa: Hemc inogona kudzivirira kukonzeresa uye hydration yekuita kweiyo spines zvidimbu nekuwedzera iyo viscosity yekongiri uye kuderedza kumhanya kwekumhanya kwemasimendi. Chiyero chakadzika hydration chinobatsira kunonoka nguva yekugara kongiri.
Reological gadziriso: Hemc inogona kugadzirisa zvivakwa zvekongiri, Wedzera zvavakaita, uye chengetedza iyo kongiri pasita mune yekutanga nhanho, kudzivisa matambudziko ekuvaka kunokonzerwa nekubatana kwakanyanya.
Kufurira Zvinhu
Mhedzisiro yeHemcPaKuramba nguva haina kunyatsoenderana neDosage yayo, asi zvakakanganiswawo nezvimwe zvinhu zvekunze:
Molecular uremu uye degree rekutsiva yeHemc: iyo molecular uremu uye degree rekutsiva (iyo degree rekutsiva reTheyl naMethyl) yeHemc vane pesvedzero huru pakuita kwayo. Hemc ine yepamusoro molecular uremu uye yakakwirira mwero wekutsiva kazhinji inowanzogadzira yakasimba network network mamiriro uye kuratidza kudzokorora kwemvura nekukora, saka kunonoka kwekugara nguva kwakanyanya kukosha.
Rudzi rweSement: Mhando dzakasiyana dzeSumbeni dzine huwandu hwakasiyana hydration, saka mhedzisiro yeHemc pane dzakasiyana masangano masisitimu akasiyanawo. Yakasarudzika Portland Spect
Mamiriro ekunze: Mamiriro ezvinhu epakatiripiti akadai tembiricha uye kunyorova zvine simba rakakosha pane iyo nguva yekugara kongiri. Tembiricha yepamusoro dzinozunza hydration yakaitwa simende, zvichikonzera nguva yakapfupikiswa, uye mhedzisiro yeHemc munzvimbo dzakakwirira tembiricha dzinogona kushayiwa simba. Pane kusapindirana, munzvimbo dzakaderera tembiricha, mhedzisiro yeHemc inogona kuve pachena.
Kusvinwa kweHemc: kusunganidzwa kweHemc zvakananga kunosarudza iyo degree rekushanduka kwayo pane kongiri. Kukwirira kwepamusoro kwehemc kunogona kuwedzera zvakanyanya kuganhurana kwemvura uye renhera yekunyora, nokudaro inonyadzisa kushanda nguva yekugara, asi yakanyanyisa hemc inogona kukonzera fluidity yekongiri uye ichikanganisa kuita kwekuvaka.
Synergistic mhedzisiro yeHemc nedzimwe admiture
Hemc inowanzo shandiswa nezvimwe zvinongedzo (senge mvura inoderedza, dzorera, nezvimwe) kugadzirisa kugadzirisa kwekuita kongiri. Nekubatana kwevanodzoreredza, iko kuisa kunonoka kwemhedzisiro yeHemc inogona kuve yakawedzera kusimbiswa. Semuenzaniso, iyo synergistic mhedzisiro yevamwe vanodzoreredza senge phosphate uye shuga adminture ine hemc inogona kuwedzera zvakanyanya nguva yekongiri, iyo yakakodzera mapurojekiti makuru munzvimbo dzinopisa kana kuda nguva yekuvaka refu yekuvaka.
3. Zvimwe zvinokonzeresa hemc pane concrete zvivakwa
Pamusoro pekunonoka nguva yekuisa, hemc zvakare ine yakakosha mhedzisiro pane zvimwe zvivakwa zvekongiri. Semuenzaniso, hemc inogona kuvandudza fluidity, anti-segregation, kupomba kuita uye kusimba kwekongiri. Ndichiri kugadzirisa nguva yekugara, kuchinjika uye kwemvura kuchengetedza kwemari kunogona zvakare kudzivirira kusarongeka kana kubuda ropa kwekongiri, uye kugadzirisa hunhu hwese uye kugadzikana kwekongiri.
HydroxytHyl methylcellose (Hemc) inogona kunonoka kunonoka nguva yekugara kongiri kuburikidza nekuchengetwa kwemvura kwayo, kureruka uye rateological uye rateological yekudzora mhedzisiro. Dhigirii rekumanikidza kweHemc inokanganiswa nezvinhu zvakaita sehuremu hwayo hunoremerwa, degree rekutsiva, simende mhando, kushambadzira kusanganisa uye mamiriro ekunze. Nekudzora zvine musoro uye chikamu cheHemc, nguva yekuraira inogona kuwedzerwa zvinobudirira apo ichisimbisa basa rekuvaka rekongiri, uye kushanda uye kusimba kwekongiri kunogona kuvandudzwa. Nekudaro, kunyanyisa kushandisa kweHemc kunogona zvakare kuunza zvisina kunaka mhedzisiro, sekusanzwisisika zvisina kunaka kana zvisina kukwana hydration, saka inoda kushandiswa nekuchenjerera maererano nezvinodiwa neinjiniya chaiwo.
Kutumira Nguva: Nov-21-2020