Imwe misiyano mikuru pakati pedhaka rakaoma-yakasanganiswa uye dhaka rechinyakare nderokuti iyo yakaoma-yakavhenganiswa dhaka inogadziriswa nekashoma kemikari additives. Kuwedzera imwe yekuwedzera kune yakaoma poda dhaka kunonzi kugadziridza kwekutanga, kuwedzera maviri kana anopfuura ekuwedzera anonzi chechipiri shanduko. Hunhu hwehupfu hwakaoma hunoenderana nekusarudzwa kwakakodzera kwezvikamu uye kurongeka uye kuenzanisa kwezvinhu zvakasiyana-siyana. Nokuti makemikari anowedzera anodhura, uye ane simba guru pakushanda kwevhu rakaoma dhaka. Nokudaro, pakusarudza zvinowedzera, huwandu hwezvinowedzera hunofanira kupiwa zvakakosha. Izvi zvinotevera sumo pfupi yekusarudza nzira yemakemikari anowedzera cellulose ether.
Cellulose ether inonziwo rheology modifier, musanganiswa unoshandiswa kugadzirisa rheological properties yedhaka ichangobva kusanganiswa, uye inoshandiswa munenge marudzi ese edhaka. Izvo zvinotevera zvivakwa zvinofanirwa kutariswa pakusarudza siyana uye dosage:
(1) Kuchengeta mvura patembiricha dzakasiyana;
(2) Kukora mhedzisiro, viscosity;
(3) Hukama huri pakati pekusachinja-chinja uye tembiricha, uye pesvedzero pakusimba mukuvapo kwe electrolyte;
(4) Chimiro uye dhigirii etherification;
(5) Kuvandudzwa kwedhaka thixotropy uye kugona chinzvimbo (izvi zvinodiwa kune dhaka rakapendwa panzvimbo dzakamira);
(6) Dissolution kumhanya, mamiriro uye kukwana kwekuparara.
Mukuwedzera pakuwedzera cellulose ether (yakadai semethyl cellulose ether) kune yakaoma poda dhaka, polyvinyl acid vinyl ester inogonawo kuwedzerwa, kureva, yechipiri kugadziriswa. Iyo inorganic binders (simende, gypsum) mudhaka inogona kuve nechokwadi chekumanikidza kwesimba, asi ine zvishoma mhedzisiro pakusimba kwekusimba uye kushanduka kwesimba. Polyvinyl acetate inovaka firimu rakanyunguduka mukati memapores edombo resimende, zvichiita kuti dhaka rikwanise kumirisana nemitoro yakakwira deformation uye kuvandudza kupfeka kuramba. Kudzidzira kwakaratidza kuti kuwedzera huwandu hwakasiyana hwemethyl cellulose ether uye polyvinyl acid vinyl ester kune yakaoma upfu dhaka inogona kugadzirira yakaonda-layer smearing plate bonding dhaka, plastering dhaka, yekushongedza pendi dhaka, uye masonry dhaka reaerated kongiri zvidhinha Uye kuzvidzora dhaka rekudurura pasi, nezvimwewo. Kusanganisa iyo miviri yemhando yepamusoro haigone kuvandudza dhaka chete, asi kuvaka zvakare hakugone kuvandudza dhaka.
Mukushanda kwekushandisa, kuitira kuti uvandudze kushanda kwese, zvinodikanwa kushandisa akawanda ekuwedzera musanganiswa. Pane optimal matching ratio pakati pezvinowedzera. Chero bedzi iyo dosage renji uye reshiyo yakakodzera, ivo vanogona kuvandudza mashandiro edhaka kubva kune akasiyana maficha. Zvisinei, kana yakashandiswa yoga, iyo inoshandura mhedzisiro padhaka inogumira, uye dzimwe nguva kunyange Negative mhedzisiro, yakadai sekuwedzera cellulose chete, nepo ichiwedzera kubatana kwedhaka uye kuderedza dhigirii re delamination, kunowedzera zvakanyanya kushandiswa kwemvura kwedhaka uye kuichengeta mukati me slurry, izvo zvinotungamira kuderera kukuru kwesimba rekumanikidza; Kana yakasanganiswa nemhepo-entraining agent, kunyange zvazvo dhigirii ye stratification yevhu inogona kuderedzwa zvikuru, uye kushandiswa kwemvura kunoderedzwawo zvakanyanya, asi simba rekumanikidzika revhu rinowanzoita kuderera nekuda kwekuwanda kwemhepo. Kuti uvandudze kushanda kwedhaka remasonry kusvika pamwero mukuru, uye panguva imwechete kudzivisa kukuvadza kune zvimwe zvinhu zvedhaka, kuwirirana, kuisa uye simba remasonry mortar kunofanira kusangana nezvinodiwa zvepurojekiti uye zvakakodzera hunyanzvi hwekuita. Panguva imwecheteyo, hapana lime paste inoshandiswa, kuchengetedza Simende, kuchengetedzwa kwezvakatipoteredza, nezvimwewo, zvakakosha kutora matanho akazara, kugadzira uye kushandisa composite admixtures kubva pamaonero ekuderedza mvura, kuwedzera viscosity, kuchengetwa kwemvura uye kukora, uye air-entraining plasticization.
Nguva yekutumira: Chivabvu-08-2023