Chii chinonzi Admixtures uye Ndeapi Mhando Dzakasiyana dzeAdmixtures?

Admixtures iboka rezvinhu zvinowedzerwa kune kongiri, dhaka, kana grout panguva yekusanganiswa kugadzirisa zvivakwa zvavo kana kuvandudza mashandiro avo. Zvishandiso izvi zvakasiyana kubva kune zvekutanga zvinongedzo zvekongiri (simende, aggregates, mvura) uye anoshandiswa muhushoma kuti uwane chaiwo anodiwa mhedzisiro. Admixtures inogona kushandura akasiyana zvimiro zvekongiri, kusanganisira kushanda, kuseta nguva, simba, kusimba, uye kuramba kune zvakatipoteredza zvinhu. Ivo vanopa kuchinjika mukongiri musanganiswa dhizaini, vachibvumira mainjiniya nevavaki kuti vagadzirise kongiri maumbirwo kuti asangane nezvinodiwa zveprojekiti. Heano marudzi akasiyana emusanganiswa anowanzoshandiswa mukuvaka:

1. Mvura-inoderedza Admixtures (Plasticizers kana Superplasticizers):

• Mvura inoderedza misanganiswa yekuwedzera inoderedza mvura inodiwa kune yakapihwa kudonha kwekongiri pasina kukanganisa kushanda kwayo. Ivo vanovandudza kuyerera uye kushanda kwekongiri musanganiswa, zvichiita kuti zvive nyore kuiswa uye compaction. Plasticizers anowanzo shandiswa mukongiri neyakajairwa kuseta nguva, nepo superplasticizers inoshandiswa mukongiri inoda yakawedzerwa nguva yekumisikidza.

2. Retarding Admixtures:

• Kudzoreredza admixtures kunonoka nguva yekumisikidza kongiri, dhaka, kana grout, zvichibvumira kushanda kwenguva refu uye nguva yekuisa. Zvinonyanya kukosha mumamiriro ekunze ekupisa kana kumapurojekiti makuru apo kunonoka mukufambisa, kuiswa, kana kupedza kunotarisirwa.

3. Accelerating Admixtures:

• Kumhanyisa mamixtures kunowedzera chiyero chekuseta uye yekutanga simba kusimudzira kwekongiri, dhaka, kana grout, zvichibvumira kukurumidza kufambira mberi kwekuvaka uye yekutanga fomu yekubvisa. Iyo inowanzoshandiswa mumamiriro ekunze anotonhora kana apo kukurumidza kuwedzera simba kunodiwa.

4. Air-Entraining Admixtures:

• Misanganiswa inopinza mhepo inopinza mabhuru emhepo asingaoneki ari mukongiri kana dhaka, achinatsiridza kusamira kwayo kuchando-inonyunguduka, kuyera, uye mabrasion. Vanowedzera kushanda uye kusimba kwekongiri mumamiriro ekunze akaoma uye kuderedza njodzi yekukuvara kubva mukushanduka kwekushisa.

5. Kudzoreredza Mhepo-Entraining Admixtures:

• Kudzoreredza mhepo-inopinza misanganiswa inosanganisa zvimiro zvekudzoreredza uye mhepo-inopinza musanganiswa, inonotsa nguva yekumisikidza kongiri uku ichidzidzisa mweya kuvandudza kwayo kutonhora-kunyungudika kuramba. Anowanzo shandiswa munzvimbo dzinotonhora kana kuti kongiri yakavharwa nechando uye kunyunguduka.

6. Corrosion-Inhibiting Admixtures:

• Corrosion-inhibiting admixtures inodzivirira yakamisikidzwa simbi yekusimbisa mukongiri kubva mukuora kunokonzerwa nekusangana nehunyoro, chlorides, kana zvimwe zvine hukasha. Vanowedzera hupenyu hwebasa rezvivakwa zvekongiri uye kuderedza kuchengetedza nekugadzirisa mari.

7. Shrinkage-Kuderedza Admixtures:

• Shrinkage-reducing admixtures inoderedza kuomesa shrinkage mukongiri, kuderedza njodzi yekuputika nekuvandudza kusimba kwenguva refu. Iwo anobatsira munzvimbo dzakakura dzekongiri, precast zvinhu, uye yakakwirira-inoshanda kongiri musanganiswa.

8. Misanganiswa yekudzivirira mvura:

• Misanganiswa yekudzivirira mvura inonatsiridza kusamira kwekongiri, kuderedza kupinda kwemvura uye kudzivirira nyaya dzine chekuita nehunyoro senge efflorescence, kunyorova, uye ngura. Iwo anowanzo shandiswa muzasi-giredhi zvivakwa, dzimba dzepasi, tunnel, uye zvivakwa zvinochengeta mvura.

9. Coloring Admixtures:

• Colouring admixtures inowedzerwa kune kongiri kuti ipe ruvara kana kuwana yekushongedza mhedzisiro. Ivo vanouya nenzira dzakasiyana siyana, kusanganisira pigment, mavara, dhayi, uye tinted sealers, zvichibvumira kugadzirisa kwekongiri nzvimbo kuti ienderane nedhizaini zvinodiwa.

10. Rheology-Modifying Admixtures:

• Rheology-inogadzirisa admixtures inoshandura kuyerera uye rheological zvimiro zvekongiri, dhaka, kana grout kuvandudza kushanda, kupomba, kana viscosity control. Iwo anowanzo shandiswa mukuzvibatanidza kongiri, shotcrete, uye yakakwirira-inoshanda kongiri musanganiswa.

Aya ndiwo mamwe emhando huru dzekusanganisa anoshandiswa mukuvaka, imwe neimwe ichipa chaiwo mabhenefiti uye zvikumbiro zvekugadzirisa kongiri kuita uye kusangana neprojekiti zvinodiwa. Izvo zvakakosha kuti usarudze uye ubatanidze admixtures akakodzera zvichienderana neprojekiti yakatarwa, mamiriro ezvakatipoteredza, uye maitiro ekuita.