Qhov ntom ntawm cov pob zeb crushed - gravel, granite, limestone thiab slag. Qhov ntom ntom ntawm cov pob zeb crushed: coefficient, GOST thiab txhais

Cov txheej txheem:

Qhov ntom ntawm cov pob zeb crushed - gravel, granite, limestone thiab slag. Qhov ntom ntom ntawm cov pob zeb crushed: coefficient, GOST thiab txhais
Qhov ntom ntawm cov pob zeb crushed - gravel, granite, limestone thiab slag. Qhov ntom ntom ntawm cov pob zeb crushed: coefficient, GOST thiab txhais

Video: Qhov ntom ntawm cov pob zeb crushed - gravel, granite, limestone thiab slag. Qhov ntom ntom ntawm cov pob zeb crushed: coefficient, GOST thiab txhais

Video: Qhov ntom ntawm cov pob zeb crushed - gravel, granite, limestone thiab slag. Qhov ntom ntom ntawm cov pob zeb crushed: coefficient, GOST thiab txhais
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Hlis ntuj nqeg
Anonim

Crushed pob zeb yog cov khoom uas tsis muaj dej, tsis muaj dej thiab granular tau los ntawm kev sib tsoo. Nws muab faib ua thawj thiab theem nrab. Qhov no yog qhov tseeb tseem ceeb. Thawj - qhov tshwm sim ntawm kev ua cov pob zeb ntuj: pebbles, pob zeb, pumice thiab lwm yam ntaub ntawv. Secondary yog tau los ntawm crushing siv pov tseg, xws li pob zeb, asph alt, cib.

rubble ceev
rubble ceev

Kev xa khoom

Cov qauv hauv qab no yog siv rau kev tsim cov pob zeb crushed: pob zeb mined nyob rau hauv lub chaw txua txiag zeb yog crushed rau ib lub xeev los ntawm kev tshuaj ntsuam. Thaum rov ua dua cov khoom pov tseg saum toj no, siv lub tshuab crusher.

crushed pob zeb ceev
crushed pob zeb ceev

Scope of application

Vim muaj cov khoom nplaum siab, piv txwv li muaj peev xwm khov khoua raws li qhov chaw, cov pob zeb crushed yog siv rau hauv cov cement-xuab zeb sib xyaw, hauv kev npaj hauv nroog, hauv kev tsim vaj tsev, hauv kev tsim kho txoj kev thiab kev tsheb ciav hlau.

bulk ceev ntawm crushed pob zeb
bulk ceev ntawm crushed pob zeb

Khoom nta

Cov khoom tseem ceeb hauv qab no yog qhov txawv:

  • Density ntawm rubble.
  • Flakiness (shape).
  • Frost resistance.
  • Nyob.
  • Radioactivity.
  • tseeb ceev ntawm rubble
    tseeb ceev ntawm rubble

Cov txiaj ntsig no ua tiav cov yam ntxwv ntawm cov khoom siv. Tom ntej no, peb xav txog ntau yam xws li cov cuab yeej xws li qhov ntom ntawm cov pob zeb crushed. Qhov no tsis yog txhais tsis tseem ceeb.

pob zeb ntom ntom

Cov khoom ntawm cov khoom no yog ncaj qha ntsig txog nws lub zog. Qhov ntom yog qhov piv ntawm qhov loj rau ntim. Nws yog ntsuas nyob rau hauv tons los yog kilograms ib cubic meter (t / m³, kg / m³). Paub qhov tseeb qhov ntom ntom ntawm cov pob zeb crushed, tsis suav nrog qhov chaw khoob, tag nrho thiab ntau, piv txwv li, hauv lub xeev tsis sib haum xeeb. Txhua tus muaj lub ntsiab lus sib xws.

Qhov tseeb ntawm cov pob zeb crushed yog txiav txim los ntawm lub chaw soj nstuam. Ntawd yog, qhov loj ntawm ib chav tsev ntim ntawm cov khoom zoo thiab qhuav yog ntsuas. Txoj kev no tsis suav nrog qhov muaj voids puv nrog huab cua. Qhov no yog qhov kev txiav txim siab porosity.

rubble bulk density coefficient
rubble bulk density coefficient

Lo lus "qhov ntom ntom ntawm cov pob zeb crushed" yog siv los txheeb xyuas qhov sib piv ntawm qhov loj thiab ntim ntim, suav nrog cov dawbqhov chaw nruab nrab ntawm cov khoom. Qhov parameter no yuav tsum tau thaum xam qhov muaj pes tsawg leeg ntawm cov qhob mix.

ntsuas qhov ceev

Hauv qhov no, muaj ntau txoj hauv kev los txiav txim siab:

  1. Nrog lub nkoj ntsuas.
  2. Nrog kev siv rooj.

Cia peb mus saib thawj txoj hauv kev

Txhawm rau ua tiav cov txheej txheem no, nws yog ib qho tsim nyog yuav tsum ua kom tiav lub cylindrical ntsuas lub nkoj nrog ntim ntawm 5 mus rau 50 litres kom txog rau thaum lub khob hliav qab rau saum. Tom qab ntawd qhov tshaj ntawm sab saum toj ntawm daim ntawv raug tshem tawm. Lub nkoj yog hnyav. Txhawm rau txiav txim siab qhov ntom ntawm cov pob zeb crushed, xam qhov sib txawv ntawm lub nkoj puv thiab khoob, uas tau muab faib los ntawm qhov ntim ntawm lub thawv no. Tsis muaj dab tsi nyuab ntawm no. Cov mis hauv qhov no zoo li qhov no:

  • Рн=(m2 – m1): V,

qhov twg m1 yog qhov loj ntawm lub nkoj khoob; m2 - nrog pob zeb crushed, V - peev xwm ntsuas tank.

cov ntsiab lus tseem ceeb

Txhawm rau ntsuas qhov ntom ntom kom raug, ua raws li cov cai ntawm lub xeev tus qauv, cov no yog:

  • Siv cov nkoj tshwj xeeb nkaus xwb, uas yog, ntawm cov duab thiab qhov loj me.
  • Qhov luaj li cas ntawm lub thawv ncaj qha nyob ntawm qhov loj me.
  • pob zeb crushed yog nyob rau hauv tsis muaj cov ntaub ntawv tshwj xeeb compacted, vim hais tias nyob rau hauv cov ntaub ntawv no cov khoom yuav muaj ntau yam ntsuas.
  • Tag nrho qhov ntom yuav tsum siab dua qhov ntom ntom.

Cov txiaj ntsig tau txais hauv chav kuaj tau qhia hauv daim ntawv hla tebchaws nrog rau ib pawg tshwj xeeb.

bulk ntom ntawm crushed pob zeb gost
bulk ntom ntawm crushed pob zeb gost

Ntxiv rau cov pob zeb crushed, qhov ntom ntawm cov xuab zeb, pob zeb thiab lwm yam ntaub ntawv kuj suav nrog hauv txoj kev zoo sib xws. Qhov no coj mus rau hauv tus account lub ntim, granularity thiab qhov chaw nruab nrab ntawm cov hais.

Kev txiav txim siab siv cov ntxhuav

Qhov kev suav ntawm qhov ntom ntawm cov ntaub ntawv no kuj tseem ceeb. Rau qhov ntim loj lossis nyob rau hauv cov xwm txheej qhov ua yuam kev ntawm li 1% tsis yog qhov tseem ceeb, siv rau kev ntsuas cov rooj nrog cov xwm txheej hloov pauv. Qhov zoo ntawm txoj kev no yog lub sij hawm txuag thiab simplicity. Minus - kwv yees, qhov tshwm sim tsis raug.

Table: "Ntau qhov ntom ntom ntawm cov pob zeb crushed (GOST 9758)"

Tseem rubble Faction, mm Bulk density, kg/m³ Brand
Granite 20-40 1370-1400 M 1100
40-70 1380-1400 M 1100
70-250 1400 M 1100
Limestone 10-20 1250 M 1100
20-40 1280 M 1100
40-70 1330 M 1100
Gravel 0-5 1600 M 1100
5-20 1430 M 1100
40-100 1650 M 1100
ntau tshaj 160 1730 M 1100
Slag 800 M 800
Nqe av nplaum 20-40 210-340 M 200, M 300
10-20 220-440 M 200, M 300, M 350, M 400
5-10 270-450 M 250, M 300, M 350, M 450
Secondary 1200-3000 M 1100

Tib

Nws yuav tsum nco ntsoov tias kev ceev ntom yog lub ntuj zoo, tsis suav txog qhov tam sim no los tshem tawm voids.

rubble ceev
rubble ceev

Nyob hauv cov khoom siv hauv tsev, nws yog ib qho ntawm cov kev tsis tseem ceeb. Lub zog ntawm cov khoom kawg thiab kev txiav txim siab tsis ncaj ntawm cov voids uas muaj qhov tsis tshua muaj zog ntawm lwm cov ntsiab lus nyob ntawm qhov no.

Hauv kev tsim cov pob zeb sib xyaw, cov cai hauv qab no tau ua raws: qhov siab dua tus nqi ntawm cov feem, qhov qis dua qhov tsis sib xws. Paub txog nws cov ntsuas yuav txuag tau ntau heev. Piv txwv li, nrog tus nqi qis qis thiab qhov loj ntawm cov cement ntau, qhov kev txiav txim ntawm qhov loj me yuav xav tau. Paub txog cov ntim khoom kom yooj yim rau kev thauj mus los thiab khaws cia. Nws tuaj yeem suav cov khoom siv rau kev thauj mus los. Tsis tas li nyob rau hauv cov ntaub ntawv no, koj tuaj yeem coj mus rau hauv tus account lub peev xwm ntawm kev thauj mus los.

crushed pob zeb ceev
crushed pob zeb ceev

Density factor

Cia peb nrog cov lus txhais no. Tus nqi kev siv thaum ntsuas los ntawm ntim ntawm pob zeb crushed yog hu ua raws li nram no: lub coefficient ntawm bulk ntom ntawm crushed pob zeb. Nws tsis tseem ceebparameter. Nws lwm lub npe kuj tseem siv - lub coefficient ntawm compaction los yog hloov dua siab tshiab (lub ntsiab lus ntawm kev hloov ntawm huab hwm coj mus rau hauv ntim, thiab vice versa).

Example

Cia hais tias ib lub tsheb nqa pob zeb tawg mus rau qhov chaw tsim kho. Yuav ua li cas ntsuas qhov tsim nyog? Txhawm rau ua qhov no, qhov ntim ntawm cov khoom thauj thiab lub cev raws li tus ciam teb filling yog xam. Cov txiaj ntsig tau txais yog ces muab faib los ntawm qhov sib npaug. Nws yog qhov tseeb tias cov nuj nqis yuav txawv vim qhov "tso" ntawm cov khoom thauj thaum lub sijhawm txav mus los, tab sis nws tsis tuaj yeem poob hauv pawg. Nyob rau hauv thawj rooj plaub, noj mus rau hauv tus account shrinkage, peb muaj peev xwm hais tias qhov no yog tag nrho cov ntom ntawm crushed pob zeb los yog ib tug nqi ze rau nws. Hauv qhov thib ob - bulk.

Rau qhov kev nkag siab zoo dua, cia peb ua piv txwv lub neej. Yuav ib co qab zib. Wb hais ib kilogram. Lawv tsaug zog nyob rau hauv ib lub tais qab zib, tau txais thawj ntim. Lawv co, lawv khob, lawv rammed. Ntsuas. Peb tau txais qhov kawg ntim raws li qhov tshwm sim.

Influencing factors

Qhov no tseem ceeb kom paub. Qhov ntom ntom kuj cuam tshuam los ntawm pob zeb los ntawm cov pob zeb crushed. Nrog tib lub ntim - 1 m 3, qhov hnyav ntawm granite yuav yog 2.6 tons. Txawm li cas los xij, limestone vim impurities ntawm quartz, dolomites, thiab lwm yam - 2.7-2.9 tons. yuav txawv ntim.

Vim li ntawd, cov pob zeb loj, tsis zoo yuav siv qhov chaw tsawg dua li cov pob zeb siv dua. Qhov no yog vim qhov chaw nruab nrab ntawm cov khoom. Qhov tseeb thiab ntau thaj tsam ntawm cov pob zeb crushed yuav hais txog qhov sib txawv ntawm cov ntim nrog tib pawg. Qhov no yog qhov tseeb. Yog li, piv txwv li, qhov tseeb qhov ceev ntawm crushed granite nrog ib feem (grain loj) los ntawm 5 mus rau 20 hli yuav yog 2590 kg/m3, thiab bulk.tib yam khoom yuav sib npaug rau 1320 kg / m³. Yog li, paub txog cov ntsiab lus no, koj tuaj yeem txuag tau ntau ntawm kev txo nqi hauv kev sib xyaw ua vaj tse, nrog rau kev thauj mus los thiab kev khaws cia.

bulk ceev ntawm crushed pob zeb
bulk ceev ntawm crushed pob zeb

Lwm txoj kev xaiv

Hauv qhov no, cov hauv qab no tuaj yeem paub qhov txawv:

  • Fraction - qhov loj ntawm cov khoom siv. Muaj cov qauv (5-10 hli, 10-20, 5-20, thiab lwm yam), tsis yog tus qauv (10-15 hli, tshaj 15 mus rau 20 hli, thiab lwm yam) thiab Euro-crushed pob zeb (3-5 hli).
  • Hom pob zeb crushed rau lub zog. Muaj ob peb hom. Namely: ib txwm muaj zog M 800-1200; siab - M 1400-1600; nruab nrab - M 600-800; tsis muaj zog - M 300-600; yam tsawg kawg nkaus - M 200.

Qhov tag nrho ntawm cov feem, qib thiab cov pob zeb yuav cuam tshuam rau qhov ntom ntom.

Pom zoo: