Chemical admixtures edhaka nekongiri ane zvese zvakafanana uye mutsauko. Izvi zvinonyanya kukonzerwa nekushandiswa kwakasiyana kwedhaka uye kongiri. Concrete inonyanya kushandiswa sechinhu chekugadzira, nepo dhaka richinyanya kupedzisa uye kubatanidza zvinhu. Mushonga wemakemikari admixtures anogona zvakare kuverengerwa nemakemikari kuumbwa uye huru inoshanda kushandiswa.
Kurongwa nemakemikari
(1) Inorganic salt mortar additives: senge yekutanga simba agent, antifreeze agent, accelerator, expansion agent, coloring agent, waterproofing agent, nezvimwewo;
(2) Polymer surfactants: Iyi mhando yeadhimikisi inonyanya kugadzirwa, senge plasticizers/water reducers, shrinkage reducers, defoamers, air-entraining agents, emulsifiers, nezvimwewo;
(3) Resin polymers: senge polymer emulsions, redispersible polymer polima, cellulose ethers, mvura-inonyungudika polymer zvinhu, nezvimwewo;
Classified nebasa guru
(1) Admixtures yekuvandudza kushanda kwekushanda (rheological properties) yedhaka itsva, kusanganisira plasticizers (water reducers), air-entraining agents, kuchengetedza mvura, uye tackifiers (viscosity regulators);
(2) Admixtures ekugadzirisa nguva yekumisikidza uye kuomesa kuita kwedhaka, kusanganisira retarders, super retarders, accelerators, ekutanga simba vamiririri, nezvimwewo;
(3) Admixtures yekuvandudza kusimba kwedhaka, air-entraining agents, kudzivirira mvura, rust inhibitors, fungicides, alkali-aggregate reaction inhibitors;
(4) Admixtures, maejenti ekuwedzera uye shrinkage zvinoderedza kuvandudza vhoriyamu kugadzikana kwedhaka;
(5) Admixtures yekuvandudza ma mechanical emulsion, polymer emulsion, redispersible polymer poda, cellulose ether, nezvimwewo;
(6) Admixtures, colorants, surface beautiifiers, uye zvinopenya kuvandudza zvinhu zvekushongedza zvedhaka;
(7) Admixtures yekuvaka pasi pemamiriro akakosha, antifreeze, self-leveling mortar admixtures, nezvimwewo;
(8) Zvimwe, senge fungicides, fibers, nezvimwewo;
Zvivakwa uye kushandiswa kwemakemikari admixtures kune yakaoma poda dhaka
Musiyano wakakosha pakati pezvinhu zvedhaka uye kongiri zvinhu ndezvekuti dhaka rinoshandiswa senge paving uye yekubatanidza zvinhu, uye kazhinji iri rakatetepa-layer chimiro kana ichishandiswa, nepo kongiri ichinyanya kushandiswa sechinhu chekugadzira, uye huwandu hwakakurawo. Naizvozvo, izvo zvinodikanwa zvekushanda kwekutengesa kongiri kuvaka zvinonyanya kugadzikana, fluidity uye fluidity kuchengetedza kugona. Izvo zvinonyanya kudiwa zvekushandisa dhaka zvakanaka kuchengetedza mvura, kubatana uye thixotropy.
Nguva yekutumira: Mar-10-2023