Fraction yog qhov tseem ceeb thaum xaiv cov pob zeb crushed thiab xuab zeb rau kev tsim kho

Cov txheej txheem:

Fraction yog qhov tseem ceeb thaum xaiv cov pob zeb crushed thiab xuab zeb rau kev tsim kho
Fraction yog qhov tseem ceeb thaum xaiv cov pob zeb crushed thiab xuab zeb rau kev tsim kho

Video: Fraction yog qhov tseem ceeb thaum xaiv cov pob zeb crushed thiab xuab zeb rau kev tsim kho

Video: Fraction yog qhov tseem ceeb thaum xaiv cov pob zeb crushed thiab xuab zeb rau kev tsim kho
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Anonim
pawg nws
pawg nws

Xoo lossis lumpy cov ntaub ntawv hauv tsev raws li cov kev cai sib txawv ntawm qhov loj. Thaum sorting cov ntaub ntawv los ntawm sifting los ntawm ib tug system ntawm sieves, cov feem yog txiav txim. Qhov no txhais tau tias crushed pob zeb los yog xuab zeb yog sib cais raws li particle los yog grain loj.

Yuav ua li cas feem yog rubble?

Cov khoom siv ntau tshaj plaws hauv kev tsim kho yog pob zeb crushed. Nws yog siv rau cov cuab yeej ntawm txoj kev hauv ncoo, qhov muag tsis pom kev, nws yog ib feem ntawm cov pob zeb sib xyaw. Nyob rau hauv txhua rooj plaub, ib qho me me ntawm cov pob zeb crushed nrog nws cov yam ntxwv ntawm lub cev yog siv. GOST muab tias ib feem yog qhov loj ntawm lub cev ntawm lub pob zeb uas haum rau lub hauv paus tsim. Muaj ob qhov qauv tseem ceeb (5-25 hli thiab 25-60 hli) uas siv rau hauv kev tsim kho. Cov cuab yeej siv niaj hnub tso cai rau kev tshuaj xyuas ntawm cov pob zeb crushed hauv cov nqi nqaim, uas yuav tsum tau ua rau kev ua haujlwm ntawm tus kheej - los ntawm qhov tsawg tshaj plaws (txog 1 cm) mus rau qhov loj (ntawm 12 txog 30 centimeters).

Koj xav tau dab tsirubble?

crushed pob zeb feem
crushed pob zeb feem

Kev lag luam tsim cov pob zeb thiab cov pob zeb ua kom muaj zog, nrog rau asph alt, suav nrog kev siv cov feem zoo ntawm cov pob zeb crushed - los ntawm 5 mus rau 20 hli. Thaum tsim tram tram, railway embankments, txoj kev cushions, loj crushed pob zeb (20/65 los yog 40/70 mm feem) yog siv ntau dua.

Cov feem loj yog tsim rau lub hauv paus, thiab hauv kev ua haujlwm toj roob hauv pes lawv siv lub pob zeb loj tshaj plaws - txog li 30 cm.

Yog li, ib feem yog qhov loj ntawm cov pob zeb crushed uas tau xaiv, npaj thiab sim ua raws li cov cai ntawm GOST.

Qhov taw qhia ib txwm rau tag nrho cov pob zeb feem yog suav tias yog cov duab cubic ntawm cov khoom, uas tau ua tiav hauv cov txheej txheem ntawm crushing.

Sand fractions and scope

Sand yog siv tsis tau tsuas yog nyob rau hauv kev tsim kho, tab sis kuj nyob rau hauv kev lag luam, piv txwv li, rau kev tsim cov rwb thaiv tsev los yog iav, zus tau tej cov nplaum thiab qhuav mixes, muab tub lim, self-leveling pem teb, pwm, thiab sandblasting. Txhawm rau kom tsis txhob muaj teeb meem nrog kev xaiv cov khoom siv raw, koj yuav tsum paub nws cov yam ntxwv thiab yuav cov xuab zeb raws nraim qhov xav tau rau ib hom kev ua haujlwm.

xuab zeb feem
xuab zeb feem

Sand yog cais raws li nws lub hauv paus chiv keeb thiab kev ua. Nws tuaj yeem yog dej, hiav txwv, chaw txua txiag zeb, quartz, perlite, thiab txhua hom muaj nws cov ntaub ntawv tswj hwm. Piv txwv li, GOST cov qauv tswj hwm qhov tsis sib xws ntawm cov khoom siv raw siv hauv kev sim cement sib txawv ntawm polyfractional thiab monofractional quartz xuab zeb. sivsuav tias yog xuab zeb los ntawm cov deposits ntawm Czech Cretaceous Region.

Ib tus yam ntxwv zoo rau cov xuab zeb ntawm cov hauv paus chiv keeb sib txawv yog qhov loj me me modulus (feem feem) - qhov no yog thaum feem ntau ntawm cov khoom yog kwv yees li qhov loj me. Yog li, xuab zeb, muaj cov nplej mus txog 0.5 cm hauv txoj kab uas hla, yog hu ua loj heev. Loj - 2.5-3.5 hli, nruab nrab - 1-2.5 hli, nplua - los ntawm 0.5 mus rau 1.5 millimeters, thiab me me ntawm cov xuab zeb yog cais raws li "zoo xuab zeb".

River xuab zeb yog cov khoom siv zoo tshaj plaws rau kev tsim cov khoom ua vaj tse, thiab cov xuab zeb zeb yog qhov zoo tagnrho rau kev sib xyaw cov masonry lossis plaster mortars, lub hauv paus ua haujlwm. Quartz xuab zeb feem ntau yog siv rau kev tsim cov vuas thiab cov khoom siv polymer, cov khoom siv hauv av thiab cov plooj (porcelain), rau cov dej pom, cov khoom siv vuam thiab pwm.

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