Iyini usayizi we-aggregate esetshenziselwa ukwengeza?
Isikhathi:12 Septhemba 2025
Ukonjwa kuyindlela efanelekile futhi esetshenziswa kakhulu kwempahla yokwakha, futhi usayizi wezimpahla ezisebenziselwa ukonjwa ungathinta kakhulu izici zayo kanye nokusebenza kwayo. Le ndatshana ihlola usayizi bezimpahla ezihlukene ezisetshenziselwa ukonjwa, ukubaluleka kwazo, nokuthi zishintsha kanjani umkhiqizo wokugcina.
Ukubaluleka Kwezinga Lesigaba Ku-Concrete
Izakhi ezihlanganisayo zibalulekile ku-concrete, zenze cishe u-60-75% wezingozi zayo. Usayizi wezakhi ezihlanganisayo uthinta izimfanelo ezahlukene ze-concrete, kuhlanganise:
- Ukusebenza: Izinto ezincane ngokuvamile zithuthukisa ukusebenza.
- Amandla: Izigaba ezinkulu zingathuthukisa amandla okuqina kwemvula.
- Ukuqina: Izinsiza ezilungile zomumo zifaka isandla ekuqiniseni kwama-concrete.
- Umnotho: Ukusebenzisa usayizi ofanele wezimbiwa kunganciphisa izindleko zokukhiqiza ukhonkolo.
Usayizi Wokuhlanganiswa Ojwayelekile
Izinsalela zihlukaniswe zibe izinhlobo ezimbili eziyinhloko ngokuya ngosayizi wazo:
Izinsiza Ezinzima
Izakhi eziphezulu yizithako eziyizigaxa ezidlula esihlungiweni esingu-4.75 mm. Zigcwalisa izikhala phakathi kwezinto ezinzima futhi zibe negalelo ekwakhekeni kwe-concrete. Izibonelo ejwayelekile zifaka phakathi:
- Isihlabathi: Isihlabathi semvelo noma itshe elishaywe elinamikhiqizo encane kuno-4.75 mm.
- Iphuzu Elikhiqiziwe: Livelwe ngokuphahlazeka kwezindonga, ithafa, noma i-slag.
Izinto ezifakiwe ezinkulu
Izinhlayiya eziqhumayo zingamaqoqo agcinwa kafushane esihlabathini esingu-4.75 mm. Zihlinzeka ngesisindo esikhulu sokuxuba isikhunta futhi zithinta amandla nokuphila isikhathi eside. Usayizi ojwayelekile uhlanganisa:
- 10 mm (3/8 intshi)
- 20 mm (3/4 intshi)
- 40 mm (1.5 amayintshi)
Ukukhetha Usayizi Osezingeni Elifanele
Ukukhetha usayizi ofanele wezinto ezihlanganisiwe kuncike ezinhlotsheni eziningana, ezifana nohlobo lokwakha, izakhiwo ezifunekayo ze-concrete, kanye nezinhlelo ezithile. Nansi eminye imigomo:
1. Izakhiwo Zokuhlala Nezokuhweba
- Ama-aggregates angu-10 mm kuya ku-20 mm ajwayelekile asetshenziswa ezakhiweni zendawo nezezohwebo. Ahlinzeka ngempilo enhle phakathi kwamandla nokusebenza.
2. Imigwa Nemigwaqo
- I-20 mm kuya ku-40 mm ama-aggregates avamise ukusetshenziswa ekwakhiweni kwemigwaqo nasepavements. Ama-aggregates amakhulu asiza ukumelana nezinsizakalo ezinzima nezithuthi.
3. Iconcrete Yakhiwo
- I-20 mm aggregates ivame ukusetshenziswa ezinhlelweni zokwakha ikhonkrithi, inikeza amandla afanele nokuhlala isikhathi eside.
Izici Eziphumelelayo Ekukhetheni Usayizi Wokuhlanganiswa
Izici eziningi zithinta ukukhethwa kobukhulu be-agregate bokwakha:
- Umklamo Wokuxuba Ikhonkolo: Umklamo wokuxuba uzonquma ingxenye nosayizi wezinto ezihlanganisiwe eziyodingeka ukuze kufezwe izakhiwo ezifiselekayo.
- Ukuma Kwezinsiza: Usayizi wezinsalela kufanele uhambisane nokuma kwamabhayi okupholisa ukuze kuqinisekiswe ukufakwa ngokufanele nokumbozwa.
- Usayizi Wezikhala: Usayizi wezingcezu kufanele ube kulungele usayizi wezikhala ukuze kugwenywe ukuhlukaniswa futhi kuqinisekiswe ukuvumelana.
Isiphetho
Usayizi we-aggregate esetshenziswa kakhulu ku-concrete udlala indima ebalulekile ekuhlonzeni izimpawu zayo nokusebenza kwayo. Ngokwazi usayizi bezahlukene kanye nezicelo zazo, onjiniyela nabakhi bangakhetha usayizi ofanele we-aggregate ukuze bahlangabezane nezidingo ezithile zephrojekthi zabo. Ukukhethwa kahle nokusetshenziswa kwe-aggregates kunomthelela ekuqhubekeni, ukumelana nezimo, nasekugcineni izindleko zemisebenzi ye-concrete.
