Raws li cov lus Mev National Association of Froductores txog aggregates "hu nws kheev ua aggregate zeb ntau uas, Tom qab koj niaj ib txoj kev kho tus muaj mob ( kuaj xyuas yooj yim uas loj tus ntuj aggregates los yog crushing, sib tsoo thiab ntsuam xyuas tus aggregates ntawm crushing), lawv siv nyob rau hauv qhov kev lag luam uas siv rau cov kev siv ntau hom, Tab sis, nws yog los ntawm qhov chaw, nrog ib cov ntaub ntawv, kev ua vaj tse, mortars thiab asphalt agglomerate, mus txog qhov siv ntawm bases, subbases rau txoj kev, ballast thiab sub-balasto txog railway, los yog breakwaters rau cov kws muaj txuj ci thiab siv cov hiav txwv ports"
Aggregates yuav ua dej num hauv:
• Yog natural: lawv yog cov uas yuav muab rho tawm los ntawm cov xwm thiab uas tsis twb tau tej co kev kho mob los yog siv. Aggregates ntuj yuav raug ntxiv ntau (Thaum cov pob zeb yuav tau ntsuam xyuas los yog tshuaj ntxuav ua ntej yuav siv) los yog aggregates of crushing (Tom qab extracting lub pob zeb ntawd yog nyuam tus txheej txheem ntawm cov shredding, ntsuam xyuas thiab tej zaum yog ntxuav).
• Ntau aggregates, lawv feem ntau yog muab rho tawm los ntawm gravel qho to. Cov kev pom deposits, lawv yog cov quartz thiab nws tag yog vim muaj cov metamorphism khaus rau ib sandstone, uas muaj generated tus tov thiab re crystallization of silica, muab ib tug compact interlocking grain ntawm quartz pob zeb. (Tswv yim xaiv thiab kev siv cov cav tov crushing lawv, Antonio Durán López, Luis Fueyo sib yuav).
Feem ntau cov qhov xyum cov extraction uas muaj ntaub ntawv zoo li no yog tau nrog cov kabmob, xws li lub log loaders, cov backhoes thiab cov crawler.
Aggregates of crushing yeej ib txwm niaj txo theem; Hom aggregate, lawv yeej tsis tshwm tsuag xoob, zoo li aggregates ntau, uas txhais tau tias yog tus pib ntawm nws deposit by means of explosives los yog hom kev kawm los ntawm gravel. Chaw txua txiag zeb aggregates extraction pib ntxiv cov nqi ntawm drilling thiab blasting rau cov neeg nyob rau hauv ib lub qhov gravel.
Cov txheej txheem ntawm crushing occupies ib qhov chaw tseem ceeb heev nyob rau lub aggregates ntawm crushing. Nyob rau hauv hom aggregates lub crushing faib ua ob theem, vim yog siv ib lub tshuab uas muaj peev xwm sawv Hospitals yuav txo tau qhov ntawm cov khoom uas qhov kev kawm ua rau ib tug hluas tshaj thiab nyuaj tsis tau ntawm txoj kev nkhaus grading uas yuav tsum tau los ntawm ntau yam hauj lwm. Txhawm rau lub puab TSAIG yuav siv tau rau hauv cov thawj tawm txiav, impactors thiab Mills Mills thooj voos kheej kheej li cov hardness thiab cov abrasiveness uas muaj ntaub.
Lub puab tsaig crushers yog siv rau cov theem nrab tawm txiav (gravilladores), lub cones, Lub impactors mills thiab mills ntawm thooj voos kheej kheej. Koj kuj siv tau tawm txiav tertiary Mills ob uas ntsug li ncej kab rov tav impactors thiab cov conical crushers txawm tias lawv tsis siv.
Nyob rau theem ntawm kev tshawb fawb rau ob lub qho to hauv gravel thiab quarries thiaj yuav discerned ntawm txoj kev tshawb fawb ntau yam. Yog yooj yim dua rau lub voos xwmfab vim lawv yeej tsis ntau dua terraces cov niam dej los yog cov dej ntws ancient thiab nquag muaj mapped nyob geological maps nrog txhua yam ntawm nws cov khoom rau lub qho to gravel. Tus quarries yuav tsum packets cov khoom hauv paus sib txawv uas tej zaum yuav muaj undergone ntau geodynamic ntawm lub ntiaj teb muaj dab, lawv yuav tau kev tshawb fawb tias lawv muaj ntau npaum li uas qhov tob nrog rua kev txiav txim ntawm qhov tob ntawm hauv tej pob khoom thiab muaj nyob rau hauv qab daus.
Thaum nws tawm mus soj ntsuam cov chaw muab kev pab kom cov chaw txua txiag zeb ntawd yog yuav pib nrog cov kev tshawb fawb ntawm geological maps, geomorphological, duab aerial thiab bibliographies ntawm qhov chaw; Tom qab uas muab cov lus qhia no feem ntau nws yuav tsum tau geological kev tshawb rau cov kawm ntawv drilling thiaj li yuav muaj tseeb rau cov kev tshawb fawb kwv pib.
