Admixtures Anowanzo Kushandiswa muKuvaka Dry-mixed Mortar
Dry-mixed dhaka imhando yezvivakwa zvekuvaka izvo zvinonyanya kushandiswa mumapurojekiti akasiyana ekuvaka.Musanganiswa wesimende, jecha, uye zvimwe zvinowedzerwa zvakafanosanganiswa zvisati zvashandiswa.Chimwe chezvinhu zvinonyanya kukosha zvedhaka rakaoma-yakavhenganiswa kushandiswa kwezvakasanganiswa, izvo zvinowedzera kushanda kwedhaka uye kuita kuti zvive zvakakodzera kune mamwe maitiro.Muchikamu chino, tichakurukura zvimwe zvezvinowanzo sanganiswa zvinoshandiswa muvhu rakaoma-rakasanganiswa dhaka.
1. Retarding agents
Retarding agents anoshandiswa kuderedza nguva yekugadzika kwevhu rakaoma-rakasanganiswa dhaka.Izvi zvinobvumira vashandi nguva yakawanda yekushanda nedhaka uye inova nechokwadi chokuti inogona kushandiswa nemazvo.Retarding agents anonyanya kukosha mumamiriro ekunze ekupisa, uko kukurumidza kugadzirisa kwedhaka kunogona kuva dambudziko.
2. Accelerating agents
Accelerating agents, kune rumwe rutivi, mhanyisa nguva yekugadzika yedhaka yakaoma-yakasanganiswa.Iyo inowanzoshandiswa mumamiriro ekunze anotonhora, uko kunonoka kwedhaka kunogona kuva dambudziko.Inogonawo kushandiswa mumamiriro ezvinhu ekugadzirisa dambudziko, apo dhaka rinokurumidza kugadzirisa rinodiwa kugadzirisa dambudziko.
3. Air-entraining agents
Air-entraining agents anoshandiswa kugadzira tuturu twemhepo mudhaka.Aya mabhuru anonatsiridza kushanda uye kusimba kwedhaka nekuita kuti isarambe kunyungudika nechando uye kuderedza njodzi yekutsemuka.Air-entraining agents anowanzoshandiswa munzvimbo dzine mamiriro echando akaoma, apo dhaka rinozoratidzwa kune chando-thaw cycles.
4. Zvishandiso zvinoderedza mvura
Mishonga inoderedza mvura inoshandiswa kuderedza kuwanda kwemvura inodiwa kusanganisa dhaka.Izvi zvinoita kuti dhaka rive rakasimba uye rirambe rakasimba, sezvo mvura yakawandisa ichigona kunetesa chigadzirwa chacho.Vagadziri vemvura vanodzikisawo vanoita kuti dhaka rishande, izvo zvinogona kuvandudza huwandu hwese hwechigadzirwa chakapedzwa.
5. Plasticizing agents
Plasticizing agents anoshandiswa kuita kuti dhaka riwedzere kushanduka uye rishande.Vanovandudza zvisungo zvekubatanidza zvedhaka uye zvinoita kuti zvive nyore kuisa kune zvakasiyana-siyana.Plasticizing agents anonyanya kubatsira mumamiriro ezvinhu apo dhaka richashandiswa kune zvisingawanzoitiki kana munzvimbo dzinotarisirwa kufamba.
6. Anti-cracking agents
Anti-cracking agents anoshandiswa kudzivirira dhaka kuti risatsemuka kana richioma.Vanobatsira kuvandudza kusimba kwese uye hupenyu hurefu hwedhaka nekudzikisa njodzi yekutsemuka.Anti-cracking agents anowanzoshandiswa munzvimbo dzine mazinga akakwirira ekuita seismic, apo dhaka richaiswa pasi pekudengenyeka kwakasimba uye kufamba.
Admixtures inoita basa rakakosha mukuita uye kunaka kwevhu rakaoma-musanganiswa dhaka.Iko kushandiswa kweaya masanganiswa anogona kuvandudza kushanda, simba, kusimba, uye huwandu hwese hwechigadzirwa chakapedzwa.Nekunzwisisa marudzi akasiyana-siyana emusanganiswa anowanikwa, nyanzvi dzekuvaka dzinogona kusarudza zvakasanganiswa zvakanaka zvemapurojekiti avo uye nekuona mhedzisiro yakanakisa.
