Ziribe kanthu momwe zisankho zamakono zamakono zimakhudzira, nthawi zonse ogula amagwiritsa ntchito pulasitiki pogwiritsa ntchito zowonongeka. Chitsanzo ndi mineral plasters kuchokera ku simenti kapena simenti-mandimu osakaniza. Kuonjezerapo, zokongoletsera zamchere zimagwiritsidwa bwino ntchito kunja kwa nyumba komanso mkati mwa nyumba ndi malo. Kukongoletsa kwa mankhwalawa kumatheka chifukwa cha zowonjezera zowonjezera mu mndandanda wa mchere wa pulasitiki osakaniza, umene umadziwika dzina lake ndi mawonekedwe ake kapena mtundu wa pamwamba.
Mitundu yokongoletsera mchere
Imodzi mwa miyala yotchuka kwambiri yokongoletsera mineral - miyala yamwala. Dzina lake limachokera ku kukhalapo kwake kwa miyala yokoma (tirigu). Pogwiritsidwa ntchito pamwamba, chophimba ("malaya") chokhala ndi granular chimachitika. Kukula kwa mbewu kumadalira kukula kwa inclusions - miyala. Chizindikiro ichi (kukula kwa fraction of inclusions) chimasonyezedwa pazomwe zili pamapeto pake. Chokongoletsera cha mchere cha miyalayi chingagwiritsidwe ntchito kwa mkati ndi kunja kumaliza ntchito, imakhala ndi zinthu zambiri (shockproof, vapor-permmeable, kugonjetsedwa ndi zisonkhezero za kunja ndi kusintha kwa kutentha).
Makhalidwe odzola amchere "kachilomboka" kamakhala kotchuka kwambiri ndipo ali ndi makhalidwe ofanana. Kusiyanitsa kwake ndi pulasitala wamtengo wapatali ndi kuti pa mankhwala opangidwa ndi mankhwala (mwa kuyika mwala wa miyala kapena marble chips), "malaya a ubweya" amamangidwa ndi zakudya, monga ngati amadyedwa ndi kachilomboka kakang'ono kameneka. Tiyeneranso kukumbukira kuti mitundu yonse ya minda yokongoletsera mchere, kuphatikizapo chotupa, kuti apange kukongoletsera mosavuta amadzipangira kujambula.
| | | |
| | | |
| | | |
