Admixtures for Concrete

Admixtures yekongiri zvinhu zvakakosha zvinowedzerwa kune musanganiswa wekongiri panguva yekusanganisa kana batching kuti igadzirise zvimiro zvayo kana kuwedzera kushanda kwayo. Izvi zvakasanganiswa zvinogona kuvandudza zvakasiyana-siyana zvekongiri, kusanganisira kushanda, simba, kusimba, nguva yekuisa, uye kuramba kumakemikari kana mamiriro ekunze. Heano mamwe marudzi akajairika emusanganiswa wekongiri:

1. Mvura-inoderedza Admixtures:

• Mvura-inoderedza misanganiswa, inozivikanwawo seplasticizers kana superplasticizers, inoshandiswa kuderedza huwandu hwemvura inodiwa mumusanganiswa wekongiri uchichengetedza kushanda.
• Vanovandudza kuyerera uye kushanda kwekongiri, zvichiita kuti zvive nyore kuisa uye kupedza.
• Superplasticizers inogona kuverengerwa seyepamusoro-renji kana yepakati-renji zvichienderana nekugona kwavo kudzikisa zvemukati zvemvura uye kuwedzera kudonha.

2. Seta Retarding Admixtures:

• Set retarding admixtures inoshandiswa kunonoka nguva yekumisikidza kongiri, ichibvumira kumwe kwakawedzerwa kuiswa uye nguva dzekupedza.
• Izvo zvinobatsira mumamiriro ekunze ekupisa kana pakutakura kongiri pamadaro marefu.
• Aya masanganiswa anogona zvakare kubatsira kudzivirira majoini anotonhora uye kugadzirisa chisungo pakati peanoteedzana kongiri inodururwa.

3. Accelerating Admixtures:

• Inomhanyisa admixtures inowedzerwa kune kongiri kuti ikurumidze kuseta uye yekutanga simba kusimudzira.
• Izvo zvinobatsira mumamiriro ekunze anotonhora kana kana zvirongwa zvekuvaka nekukurumidza zvichidikanwa.
• Calcium chloride yakajairika inomhanyisa musanganiswa, kunyangwe kushandiswa kwayo kungatungamira mukuora kwesimbi yekusimbisa uye efflorescence.

4. Air-Entraining Admixtures:

• Air-entraining admixtures anoshandiswa kuunza microscopic mabhuru emhepo mumusanganiswa wekongiri.
• Aya mabhubhu emhepo anovandudza kusimba kwekongiri nekupa kuramba kutenderera-kunyungudika, kuderedza kubuda kweropa uye kupatsanura, nekuvandudza kushanda.
• Air-entraining admixtures inowanzoshandiswa munzvimbo dzinotonhora uye kune kongiri yakazaruka kune de-icing munyu.

5. Kudzoreredza uye Kuderedza Mvura-Kuderedza Admixtures:

• Izvi zvakasanganiswa zvinosanganisa zvimiro zveset retarding uye mvura-inoderedza admixtures.
• Vanononoka nguva yekuisa kongiri panguva imwe chete vachivandudza kushanda uye kuderedza mvura.
• Kudzoreredza uye kuderedza mvura kusanganiswa kunowanzoshandiswa mumamiriro ekunze anopisa kudzivirira kukurumidza kugadzika uye kurasikirwa nekudonha.

6. Corrosion-Inhibiting Admixtures:

• Corrosion-inhibiting admixtures inowedzerwa kune kongiri kuchengetedza yakamisikidzwa simbi yekusimbisa kubva mukuora.
• Vanoumba chidziviriro chekudzivirira pamusoro pekusimbisa, kudzivirira kupinda kwekloridi uye zvimwe zvinopisa.
• Aya masanganiswa anonyanya kubatsira munzvimbo dzemugungwa kana zvimiro zvakafumurwa kune de-icing munyu.

7. Shrinkage-Kuderedza Admixtures:

• Shrinkage-reducing admixtures inoshandiswa kuderedza kuomesa shrinkage uye kuputika mukrete.
• Vanoshanda nekudzikisa kusimba kwepamusoro pemvura yepore, zvichibvumira kuomesa yunifomu uye kuderedza shrinkage.
• Aya masanganiswa anobatsira munzvimbo dzakakura kongiri, precast kongiri zvinhu, uye yakakwirira-inoshanda kongiri musanganiswa.

Admixtures inoita basa rakakosha mukusimudzira kuita uye kusimba kwekongiri mumashandisirwo akasiyana siyana. Nekunyatsosarudza uye nekubatanidza admixtures akakodzera mumusanganiswa wekongiri, mainjiniya nemakondirakiti vanogona kuwana zvivakwa zvavanoda zvakaita sekuvandudzwa kwekushanda, simba, kusimba, uye kuramba kune yakaipa mamiriro ezvakatipoteredza. Izvo zvakakosha kuti uteedzere kurudziro yevagadziri uye dosage nhungamiro kana uchishandisa admixtures kuve nechokwadi chekuita kwakakwana uye kuenderana nemusanganiswa wekongiri.