Kuvandudza Concrete neZviwedzerwa

Kuvandudza kongiri nezvinowedzerwa kunosanganisira kubatanidza akasiyana makemikari uye zvicherwa zvekuwedzera mumusanganiswa wekongiri kuti uvandudze chaiwo zvimiro kana hunhu hwekongiri yakaoma. Heano marudzi akati wandei ekuwedzera anowanzoshandiswa kuwedzera kongiri:

1. Misanganiswa Inoderedza Mvura (Plasticizers):
   • Mvura-inoderedza misanganiswa, inozivikanwawo seplasticizers kana superplasticizers, inovandudza kushanda nekuderedza huwandu hwemvura inodiwa mumusanganiswa wekongiri. Vanobatsira kuwedzera kudonha, kuderedza kusarura, uye kuvandudza kuyerera kwekongiri pasina kukanganisa simba.
2. Seta Retarding Admixtures:
   • Set retarding admixtures inoshandiswa kunonoka kumisa nguva yekongiri, ichibvumira kuwedzera kushanda uye nguva yekuisa. Izvo zvinonyanya kukosha mumamiriro ekunze ekupisa kana kune mapurojekiti makuru apo kutakurwa kwenguva refu uye nguva yekuisa inodiwa.
3. Seta Accelerating Admixtures:
   • Set accelerating admixtures anoshandiswa kukurumidza kuseta nguva yekongiri, kuderedza nguva yekuvaka uye kugonesa kukurumidza kubviswa kwefomu uye kupedzisa. Vanobatsira mumamiriro ekunze anotonhora kana apo simba rinokurumidza kudiwa.
4. Mhepo-Entraining Admixtures:
   • Air-entraining admixtures anowedzerwa kune kongiri kugadzira microscopic mabhuru emhepo mumusanganiswa, ayo anovandudza kutonhora-kunyungudika kuramba uye kusimba. Vanowedzera kushanda uye kubatana kwekongiri, kunyanya mumamiriro ekunze akaoma.
5. Pozzolans:
   • Pozzolanic zvinhu zvakaita sedota renhunzi, silica fume, uye slag mamineral additives anopindirana necalcium hydroxide musimende kuti aumbe mamwe simende makomisheni. Vanovandudza simba, kusimba, uye kuramba kurwisa kwemakemikari uye kuderedza kupisa kwe hydration.
6. Fibers:
   • Fiber additives, senge simbi, synthetic (polypropylene, naironi), kana magirazi faibha, anoshandiswa kusimudzira kusimba kwesimba, kupikisa, uye kusimba kwekongiri. Ivo vanobatsira kudzora kutsemuka uye kuvandudza kusimba mune zvimiro uye zvisiri-zvimiro zvekushandisa.
7. Shrinkage-Reducing Admixtures:
   • Shrinkage-reducing admixtures inoshandiswa kuderedza kuomesa shrinkage mukongiri, kuderedza njodzi yekuputika nekuvandudza kusimba kwenguva refu. Vanoshanda nekuderedza kushushikana kwepamusoro pemvura mumusanganiswa wekongiri.
8. Corrosion Inhibitors:
   • Corrosion inhibitors makemikari ekuwedzera anodzivirira yakasimbiswa kongiri zvimiro kubva mukuora kunokonzerwa nekloridi ion, carbonation, kana zvimwe zvinhu zvine hukasha. Vanobatsira kuwedzera hupenyu hwesevhisi yekongiri munzvimbo dzemugungwa, maindasitiri, kana migwagwa mikuru.
9. Coloring Agents:
   • Mavara emagetsi, senge iron oxide pigments kana madhayi ekugadzira, anoshandiswa kuwedzera ruvara kune kongiri yekushongedza kana yekunakisa zvinangwa. Ivo vanosimudzira kukwezva kwekuona kwekongiri nzvimbo mune zvekuvaka uye landscaping application.

Nekubatanidza izvi zvinowedzera mumisanganiswa yekongiri, mainjiniya nemakondirakiti vanogona kugadzirisa zvivakwa zvekongiri kuti zvisangane nezvinodiwa zvepurojekiti uye kuwana hunhu hunodiwa hwekuita, senge simba, kusimba, kushanda, uye chitarisiko.