Pob Zeb Tsoo (66 Duab): GOST Thiab Hom. Nws Yog Dab Tsi? Zuaj Zeb 5-20 Hli Thiab Loj, Iav Ua Npuas Ncauj Thiab Lwm Tus, Nws Daim Ntawv Thov Thiab Yam Ntxwv

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2023-12-16 05:41

Nws nyuaj rau ib leeg tawm ntawm hom kev tsim kho uas cov pob zeb tawg yuav tsis siv - qhov no yog cov khoom uas tsis tuaj yeem hloov pauv tau tiag tiag, muaj nyob hauv txhua qhov ntau yam xim thiab duab. Txhua hom kev ua haujlwm xav tau cov khoom siv ntawm qhov no lossis qhov ntom ntom ntom ntom, qib flakiness, kev ua raws thiab kev faib ua feem. Qhov no thiab ntau ntxiv yuav tham txog hauv peb qhov kev tshuaj xyuas.

Nws yog dab tsi?

Crushed pob zeb yog ib qho ntawm cov khoom siv nrov tshaj plaws hauv tsev . Tam sim no, tsis muaj txheej txheem kev tsim kho ua tiav yam tsis muaj nws. Nws yog qhov xav tau thaum tsim lub hauv paus ruaj khov rau kev sib xyaw ua vaj tsev. Txhua hom pob zeb tawg tau siv thaum txhaws txoj kev loj thiab npaj kev nkag mus.

Hauv ib lo lus, nws yog cov khoom siv hauv tsev uas muaj ntau yam nrog rau kev siv ntau yam.

Crushed pob zeb yog tau los ntawm crushing pob zeb. Kev tshem tawm ntawm lub pob zeb nws tus kheej yog nqa tawm hauv qhov qhib qhov av nrog kev pab los ntawm tshwj xeeb loaders. Cov khoom siv raw tau thauj mus rau cov khw tsim khoom, qhov uas lawv tau txheeb thiab xa mus rau cov khoom siv zom zaws. Cov nplej me tshaj plaws tau raug lim rau kev tshuaj xyuas, thiab cov khoom seem tau muab cais nyob ntawm lub hauv paus thiab cov feem ntxiv . Kev siv tshuab crushing siv txiav txim siab kwv yees li ntawm cov nplaum thiab flakiness ntawm pob zeb tawg. Kom paub meej txog cov yam ntxwv ntawm pob zeb, tom qab ua tiav, nws raug xa mus rau chav kuaj, qhov twg cov cuab yeej siv thiab ua haujlwm tau zoo thiab ua raws li qhov yuav tsum tau ua ntawm GOST tau tsim ua piv txwv. Txhua pawg tau sau npe thiab tau txais daim ntawv pov thawj zoo. Qhov no yog theem tseem ceeb heev, txij li tsuas yog qee hom pob zeb siv rau kev tsim kho thiab teeb tsa ua haujlwm - cov uas ua tau raws cov qauv GOST 8267-93 . Cov pob zeb sib tsoo tau muag hauv hnab ntawm 10-50 kg, hnab loj lossis ntau hauv tsheb. Cov pob zeb tawg tuaj yeem yog xim dawb, daj, pinkish lossis grey.

Nws tuaj yeem ntxuav lossis tsis ntxuav.

Sib piv nrog pob zeb

Zuaj pob zeb feem ntau tsis meej pem nrog pob zeb. Ob qho khoom siv tau los ntawm pob zeb, txawm li cas los xij, txoj hauv kev kom tau txais lawv sib txawv. Yog li, pob zeb tau tsim nyob rau lub sijhawm ntawm kev puas tsuaj ntawm niam txiv pob zeb nyob hauv kev cuam tshuam ntawm cov txheej txheem ntuj - nag, cua thiab hluav taws xob ultraviolet. Cov txheej txheem no txuas ntxiv mus thiab siv sijhawm ntau txhiab xyoo. Crushed pob zeb yog tsim los ntawm kev zom zaws. Kev ceev kom tau cov pob zeb no ntau dua, nws nyob ntawm lub zog ntawm pob zeb thiab lub zog ntawm cov nroj tsuag.

Nws tuaj yeem sib cav hais tias pob zeb nws muaj nws tus kheej thiab keeb kwm yav dhau los, thaum pob zeb tsoo tsis ua.

Cov yam ntxwv ntawm keeb kwm tseem txiav txim siab qhov sib txawv ntawm qhov tsos ntawm cov ntaub ntawv. Cov nplej ntawm cov pob zeb uas tau txais thaum lub sij hawm zom zaws muaj cov ntug ib puag ncig thiab qhov ntxhib. Pob zeb, tshwj xeeb tshaj yog dej los yog pob zeb hauv av, muaj cov duab sib npaug thiab zoo nkauj. Raws li, cov pob zeb tawg tau zoo dua li cov pob zeb muab cov nplaum rau cov cement ntau, ua tsaug uas cov khoom siv dav xav tau thaum ua haujlwm tsim kho . Tab sis qhov zoo nkauj zoo nkauj ntawm cov pob zeb tawg tau qis dua li ntawm pob zeb.

Qhov tom kawg feem ntau yog siv hauv kev tsim toj roob hauv pes rau kev sib sau ua ke ntawm rockeries thiab tsim qauv ntawm txoj kev hauv vaj.

Los ntawm qhov pom ntawm cov tshuaj muaj pes tsawg leeg, cov pob zeb tawg thiab cov pob zeb tuaj yeem muaj cov khoom sib xws, tab sis lawv kuj tuaj yeem sib txawv - qhov no ncaj qha nyob ntawm thawj hom khoom siv raw. Piv txwv li, los ntawm pob zeb loj, cov ntaub ntawv uas muaj cov sib xyaw zoo ib yam tau txais. Thiab yog tias pob zeb tawg yog ua los ntawm kev pov tseg ntawm kev tsim lossis cov khoom siv hlau, cov khoom sib txawv yuav txawv ntawm cov pob zeb.

Cov yam ntxwv tseem ceeb thiab cov khoom

Nyob ntawm tus yam ntxwv ntawm niam txiv pob zeb thiab cov txheej txheem tsim khoom, cov pob zeb tawg tuaj yeem muaj cov txheej txheem sib txawv. Thaum xaiv ib lossis lwm yam khoom siv ntau, nws yog qhov yuav tsum tau coj mus rau hauv tus account nws cov haujlwm ua haujlwm, uas tag nrho cov txiaj ntsig zoo ntawm kev ua haujlwm ncaj qha nyob ntawm.

Raws li qhov yuav tsum tau ua ntawm GOST, ntau qhov txheej txheem yooj yim rau kev tsim kho cov pob zeb tawg yog qhov txawv

Ceev

Qhov ntsuas no nyob ntawm tus yam ntxwv ntawm keeb kwm ntawm cov khoom thiab thaj tsam ntawm 1, 2 txog 3 g / cm3. Qhov ntau dua qhov ntom ntawm pob zeb, ntau yam khoom siv hauv tsev yog ntau yam.

Nws lub zog muaj feem cuam tshuam ncaj qha rau qhov ntom ntom ntawm pob zeb tawg, kev sib raug zoo ntawm cov yam ntxwv no ncaj qha ncaj qha. Lub zog tau nkag siab raws li lub peev xwm ntawm cov nplej kom tiv taus cov khoom siv ntawm qhov sib txawv siv. Qhov ntsuas no tau txiav txim siab los ntawm kev sim ua ntu zus thaum lub pob zeb raug zuaj hauv qhov siab hauv lub tog raj kheej - cov kev sim no sim ua qhov tseeb ntawm kev siv cov khoom loj. Nyob ntawm qhov txiaj ntsig, cov pob zeb tawg tau muab tso rau ib ntawm pawg muaj zog los ntawm M200 txog M1600, thaum cov ntsuas ntsuas digital qhia txog qhov tso cai siab tshaj plaws uas cov khoom tuaj yeem tiv taus.

Txhua chav kawm ntawm cov pob zeb tawg tau nws tus kheej cov yam ntxwv thiab kev lag luam ntawm kev siv

• M200 - lub zog qis. Lub pob zeb zoo li no yog siv thaum tsim txoj hauv kev uas muaj cov tsheb tsawg lossis npaj cov dej ntws.
• М300 -М600 - lub zog qis. Nws yog qhov xav tau hauv kev lag luam ib yam li M200 tsoo pob zeb.
• М600 -М800 - lub zog nruab nrab. Lub pob zeb yog qhov xav tau thaum txhim kho lub teeb nraub qaum, piv txwv li, kab hlau rhuav phab ntsa ntawm ib lub tsev.
• М800 -М1200 - lub zog txaus. Cov pob zeb tawg no tau txiav txim siab thoob plaws ntiaj teb, nws tau siv rau kev tsim kho ntawm kev txhawb nqa, laj kab, nchuav cov hauv paus thiab txhawb nqa.
• М1200 -М1400 - nce lub zog. Lub pob zeb tau pom daim ntawv thov hauv kev tsim kho lub hauv paus rau cov tsev siab, cov qauv hydraulic thiab txhawb nqa choj.
• М1400-М1600 yog lub pob zeb hnyav. Daim ntawv thov raug txwv rau kev teeb tsa ntawm cov khoom tshwj xeeb.

Lub xub ntiag ntawm impurities

Txhua lub pob zeb feem ntau muaj cov sib xyaw ntawm cov pob zeb tsis muaj zog. Lawv raug rau qhov yuav tsum tau muab faib, vim tias lub zog ntawm cov khoom siv feem ntau nyob ntawm lawv ntim. Kev faib ua feem ntawm cov khoom siv no suav nrog hauv cov chaw sim tshuaj uas siv lub siab 20 MPa rau cov khoom siv.

Raws li txoj cai tam sim no, txwv qhov ntau ntawm cov tshuaj ntxiv rau qib qis suav nrog:

• М1600 - tsis ntau tshaj 1%;
• М1000 -М1400 - tsis ntau dua 5%;
• М400 -М800 - tsis ntau tshaj 10%.

Yog tias qhov sib faib ntawm cov khoom tawg yooj yim ntau dua 20%, tom qab ntawd cov pob zeb tawg tau raug xa mus ua pob zeb. Nws tau siv tshwj xeeb tshaj yog thaum sau cov kab qis thiab siv cov txheej txheem ib ntus.

Flakiness

Qhov no yog ib qho ntawm cov khoom tseem ceeb ntawm cov pob zeb tawg. Qhov ntsuas ntsuas qhia pom tias muaj cov acicular thiab lamellar nplej hauv tag nrho qhov hnyav ntawm pob zeb tawg. Nyob ntawm tus nqi flakiness, cov khoom siv sib txawv yog txawv:

• ib txwm - 25-35%;
• txhim kho - 15-25%;
• cuboid - tsis ntau tshaj 15%.

Cov pob zeb tsoo nrog cov nplaim hluav taws tsawg yog xav tau dav hauv kev tsim kho thiab teeb tsa ua haujlwm, qhov twg nws yog ib qho tseem ceeb kom sib xyaw cov cement sib tov kom ntau li ntau tau. Koob txhaj yuav tsim cov voids, thiab yuav tsum ntxiv pob zeb ntxiv, tab sis txawm tias qhov no, qhov ntom ntawm cov khoom tiav yuav qis dua thaum nias.

Cov pob zeb tsoo nrog cov ntsiab lus siab ntawm koob thiab cov ntsiab lus tiaj tus feem ntau xav tau thaum sau txoj hauv kev.

Frost tsis kam

Qhov ntsuas no tseem ceeb tshwj xeeb hauv cov xwm txheej ntawm huab cua Lavxias. Cov txheej txheem no qhia txog tus naj npawb ntawm cov khov thiab tom ntej thaws mus uas lub pob zeb yuav tiv taus yam tsis tau poob nws lub zog yam ntxwv. Tus nqi ntawm qhov ntsuas nyob hauv cov xwm txheej sim tau suav los ntawm kev ziab thiab tom qab ua kom tiav ntawm cov pob zeb hauv qhov kev daws teeb meem ntawm sodium sulfate.

Thaum cim, qhov ua kom tsis khov tuaj yeem pom hauv Latin tsab ntawv F, ua raws los ntawm cov lej cov ntaub ntawv - lawv qhia tus naj npawb ntawm cov khov thiab thaws mus.

Frost tsis kam ntawm pob zeb tawg yog nyob ntawm thaj tsam ntawm F15-F400:

• F15 -F50 - cov khoom tsis ruaj khov, zoo tshaj rau cov kav dej thiab ua haujlwm sab hauv hauv cov tsev sov;
• F50-F150-lub pob zeb ruaj khov, tsim nyog rau kev tsim cov qauv qis hauv thaj chaw sov;
• F200 yog ib hom pob zeb tawg uas muaj kev ruaj ntseg zoo, zoo rau kev teeb tsa cov tsev nyuaj nyob rau thaj tsam nruab nrab ntawm Russia thiab thaj tsam sab qaum teb.

Adhesion

Ib qho tseem ceeb ntsuas yog qhov ua tau ntawm cov pob zeb tawg - lub peev xwm ntawm pob zeb ua raws cov khoom sib xyaw ua ke nrog cov cement sib txawv. Qhov loj dua qhov ntsuas, qhov zoo ntawm cov khoom.

Raws li kev xyaum qhia, qhov ua tau zoo tshaj plaws yog pob zeb grey thiab tsaus grey.

Tej ntom ntom

Qhov ntsuas no suav nrog thaum thauj pob zeb tawg, nrog rau thaum siv nws hauv kev sau . Qhov ntsuas ntsuas qhia qhov hnyav ntawm pob zeb, uas yuav haum rau hauv ib lub voos xwmfab. Nyob ntawm qhov ntsuas ntawm cov nplej, tus nqi no sib txawv: lub pob zeb sib tsoo zoo dua, qhov ntau nws yuav haum hauv ib chav ntim. Qhov ntsuas lej suav nrog hauv kg ib m3. Yog li, qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom yog 1400 kg / m3, thiab limestone - 1250 kg / m3.

Cov duab hluav taws xob tom qab

Qee hom pob zeb tawg tau dhau los ua hluav taws xob, yog li txhua pawg yuav tsum tau ua daim ntawv pov thawj yuam kev, ntxiv rau muaj cov ntaub ntawv tsim nyog lees tias nws zoo. Cov xov tooj cua tom qab ntawm pob zeb granite yog qhov siab tshaj plaws; hauv tag nrho, ntau pab pawg ntawm cov pob zeb tawg tawg ua haujlwm tau zoo.

• Thawj chav kawm - tsis siab dua 370 Bq / kg. Nws yog siv rau txhua hom kev tsim kho thiab teeb tsa ua haujlwm.
• Qib ob - ntau dua 370 Bq / kg. Kev pom zoo rau kev tsim kho cov chaw tsim khoom thiab txoj hauv kev. Tsis pom zoo rau kho kom zoo nkauj sab hauv.
• Qib thib peb - ntau dua 750 Bq / kg. Tso cai siv rau kev tsim kho kom deb ntawm cov tsev nyob thiab chaw nyob ntawm tib neeg.

Hom kev txheeb xyuas

Cov tshuaj muaj pes tsawg leeg ntawm cov pob zeb tawg tau ncaj qha nyob ntawm qhov muaj pes tsawg leeg ntawm cov pob zeb. Yog li, ntau yam granite thiab basalt yog keeb kwm magmatic, dolomite - sedimentary, pob zeb sib tsoo pob zeb muaj txhua qhov cim ntawm pob zeb metamorphic. Nyob ntawm lub hauv paus chiv keeb, ob peb hom pob zeb sib txawv. Cia peb nyob ntawm qhov xav tau tshaj plaws hauv thaj chaw ntawm peb lub tebchaws.

Granite

Granite crushed pob zeb yog tau los ntawm kev zom cov granite massif. Nws yog tus yam ntxwv los ntawm cov npoo tsis ncaj. Kev sib tsoo qhov sib txawv ntawm 5 txog 120 hli.

Granite crushed pob zeb yog qhov ruaj khov tshaj plaws, nws suav hais tias yog thoob ntiaj teb . Ntxiv nrog rau granite, nws yuav suav nrog kev tsis huv ntawm mica, quartz, thiab feldspar. Nyob ntawm qhov muaj nyob ntawm cov muaju no, cov xim hle tuaj yeem ua xim liab, txho, txawm tias liab liab. Lub zog ntsuas ntawm cov pob zeb granite sib raug rau M1400-M1600 cov npe, qhov ua kom khov yog F300-F400, qhov flakiness qis dua. Nyob rau tib lub sijhawm, cov khoom siv granite feem ntau tuaj yeem muaj hluav taws xob ntau ntxiv tom qab, yog li nws yuav tsum tsis txhob siv thaum ua haujlwm hauv cov tsev nyob thiab kev npaj ntawm thaj av uas nyob ib sab.

Thaum yuav cov pob zeb zoo li no, nws yog qhov yuav tsum tau muaj daim ntawv pov thawj zoo rau pob khoom.

Pob zeb

Cov pob zeb tawg tau tsim thaum kuaj cov pob zeb lossis los ntawm kev tawg thaum lub chaw txua txiag zeb. Cov pob zeb sib tsoo muaj cov xim greyish, qhov ntsuas ntawm cov nplej sib txawv los ntawm qhov zoo rau feem me me. Piv rau granite, pob zeb zoo li tsis muaj zog - qib muaj zog tshaj M1200. Cov pob zeb tawg no yog qhov ua tsis zoo rau granite raws li cov txheej txheem tseem ceeb xws li kev zoo nkauj sab nrauv . Txawm li cas los xij, nws muaj nws qhov zoo.

Kev tshem tawm cov pob zeb tsoo pob zeb yuav tsum tau siv zog ua haujlwm tsawg dua thiab nyiaj txiag, txij li cov niam txiv pob zeb pob zeb, hauv kev sib piv nrog cov granite, tsis tshua muaj zog. Qhov no txhais tau tias cov cuab yeej siv zog tsawg dua xav tau los tsoo lawv. Gravel yog cov khoom siv hauv tsev uas muaj ntau qhov chaw, qhov no muab tus nqi pheej yig rau cov pob zeb tawg uas tau los ntawm nws. Pob zeb muaj xoom keeb kwm yav dhau hluav taws xob. Qhov txiaj ntsig tseem ceeb no muab kev xav tau ntau ntxiv rau cov khoom siv hauv kev teeb tsa cov tsev nyob, chaw nyob thiab chaw kho mob.

Cov pob zeb sib tsoo tau tsim muaj ntau qhov ntau thiab tsawg: 3-10 mm, 5-20 mm, ntxiv rau 5-40 mm thiab 20-40 mm

Limestone

Limestone yog tsim los ntawm dolomite. Nws yog qhov xav tau hauv kev tsim kho cov teeb tsa ua haujlwm me me. Limestone muaj peev xwm ua kom siab, nws tau khawb hauv cov chaw txua txiag zeb. Cov pob zeb tsoo yog tau thaum lub sij hawm faib cov pob zeb, cov khoom siv yog 95% calcium carbonate.

Cov pob zeb tsoo tau dhau los ua qhov txhia chaw vim nws cov nqi ywj pheej. Txawm li cas los xij, lub zog ntawm pob zeb kuj qis, thiab cov dej nqus tau siab. Qhov no txwv cov lus qhia ntawm nws daim ntawv thov. Piv rau granite thiab cov khoom siv pob zeb ua ke, cov pob zeb tawg tau xav tau thaum tsim cov txheej txheem ntawm kev siv qis. Ib qho ntxiv, cov khoom pom pom faib hauv kev tsim cov chiv, nrog rau dej qab zib thiab txiv qaub. Carbonate crushed pob zeb tau muag hauv peb qhov ntau thiab tsawg: 5-20 mm, 20-40 mm, thiab 40-70 mm.

Secondary

Niaj hnub no, pob zeb thib ob tau nthuav dav. Nws tau txais los ntawm kev zom cov khib nyiab los ntawm kev tsim kho kev lag luam: monolithic ua npuas dej iav qauv lossis cov khoom siv ua vaj tsev ntxiv. Tus nqi tsim khoom ntawm cov pob zeb tawg yog qhov qis, thiab raws li, tus nqi ntawm cov khoom tiav yog pheej yig. Hauv kev sib piv nrog granite, hom pob zeb tawg no yuav raug nqi 2-3 zaug. Txawm li cas los xij, tus nqi no qhia txog qhov qis qis ntawm kev tiv taus te thiab ntom ntawm cov khoom siv hauv tsev . Qhov ntom ntom ntom ntawm cov pob zeb tawg thib ob sib raug zoo rau M800, thiab tiv taus te khov yog khaws cia ntawm F150.

Cov pob zeb tawg no yog qhov xav tau hauv kev ntxiv dag zog rau cov av mos, nws tuaj yeem siv los ua cov muab rau cov xuab zeb-cement mortar thiab hauv kev npaj ntawm txoj hauv kev.

Slag

Crushed slag yog qhov tshwm sim ntawm crushing pov tseg los ntawm kev lag luam hlau. Cov khoom siv no muaj qhov ntom ntom ntom ntom ntom ntom - nws siab dua li cov pob zeb granite. Txawm li cas los xij, qhov ntom ntom no ua rau nce ntawm qhov hnyav ntawm cov khoom; hauv kev tsim kho, qhov no suav tias yog qhov tsis zoo.

Slag crushed pob zeb tau nce cov dej nqus tsis tau, yog li ntawd, cov qauv siv cov khoom sib xyaw no yuav tsum tsis txhob cuam tshuam nrog dej . Frost tsis kam ntawm crushed slag yog qis, nws tuaj yeem tiv taus tsuas yog 15 khov thiab tom qab ntawd thaw mus. Rau kev siv: granite tuaj yeem tiv taus 250-300 mus. Kev siv cov ntaub ntawv slag hauv kev tsim kho kev lag luam yog qhov pom zoo tsuas yog coj mus rau hauv tus account nws qhov tsis xws luag.

Nws yog qhov xav tau hauv kev txhim kho txoj kev thiab kev tsim vaj tsev.

Cov pob zeb tsoo pob zeb yog qhov tsis tshua muaj tshwm sim - nws yog khawb los ntawm pob zeb ntawm hom roob hluav taws . Pom qhov muag, nws zoo li lub pob zeb ntom ntom ntom, cov xim tuaj yeem yog ntsuab, daj, xim av lossis burgundy. Slate yog nrov hauv kev tsim cov khoom siv hauv tsev thiab kev tsim cov qauv qis. Muaj pob zeb ntawm pob zeb, tsoo uas ua rau muaj ntau cov phaj nyias - lawv xav tau hauv kev tsim cov khoom siv vov tsev. Cov pob zeb tawg zeb kuj tseem siv los tsim cov pob zeb ua vaj tsev tsim kho. Tab sis nws yog siv dav tshaj plaws hauv kev tsim toj roob hauv pes. Slate pob zeb yog siv los kho tsev sov lub caij ntuj sov, kho kom zoo nkauj thaj chaw hauv cheeb tsam.

Quartz crushed pob zeb tau txais los ntawm cov pob zeb raws li quartz - nws qhov ntom ntom sib xws rau ntawm granite. Txawm li cas los xij, tib lub sijhawm, quartz muab cov xov tooj cua tsis muaj zog yav tom ntej thiab yog tus yam ntxwv zoo nkauj heev . Nws yog siv feem ntau hauv vaj dai kom zoo nkauj.

Tsawg zaus hauv kev tsim kho kev lag luam, siv pob zeb diorite. Nws tau muab rho tawm los ntawm plagioclase nrog cov ntsiab lus siab ntawm cov xim ntxhia. Muab rau hauv qhov loj me me 5-20 hli.

Fractions

Hais txog dab tsi thaj chaw muaj rau kev faib cov pob zeb tawg, ib tus yuav tsum nyob ntawm nws qhov kev faib ua feem. Nyob ntawm tus yam ntxwv ntawm cov khoom noj thiab lub peev xwm ntawm cov nroj tsuag sib tsoo, pob zeb tuaj yeem tsim tawm hauv ntau qhov ntau thiab tsawg.

5-20

Cov pob zeb tawg no yog siv feem ntau hauv kev tsim cov khoom lag luam me, piv txwv li, paving slabs.

20-40

Cov khoom siv no xav tau thaum tsim cov ntawv monolithic, piv txwv li, cov nplhaib zoo. Cov pob zeb tsoo ntawm cov feem no yog siv hauv kev tsim txhua yam ntawm cov pob zeb ua ke.

40-70

Cov ntxhib feem yog cuam tshuam rau kev tsim cov ntawv loj thiab tsim cov pob zeb ua ke hauv qhov loj. Cov pob zeb tawg no yog xav tau hauv kev npaj kev npaj ntawm txoj kev loj thiab kev tsim kho cov chaw lag luam loj. Txhawm rau kom tuab ntawm txheej thaum npaj txoj hauv kev, ob txheej txheej hauv ncoo feem ntau tau npaj: pob zeb loj tau nchuav los ntawm hauv qab, los saum toj no - ib nrab.

70-150

Fractions ntawm granite crushed zeb 70-120, 120-150, ntxiv rau 150-300 kuj tseem tuaj yeem hu ua pob zeb tawg. Pob zeb no feem ntau yog siv rau lub hom phiaj zoo nkauj - thaum txhim kho laj kab thiab laj kab.

Cov khoom siv yog xav tau hauv thaj av rov tsim dua thiab tsim cov txheej txheem ua vaj tsev ntxiv.

Spheres thiab cov yam ntxwv ntawm daim ntawv thov

Crushed pob zeb yog qhov xav tau hauv ntau yam lag luam.

Yog li, hauv kev tsim kho kev lag luam, nws ua nyob rau hauv daim ntawv ntawm cov muab cov xuab zeb-cement mortar … Nyob ntawm qhov sib piv ntawm cov khoom sib xyaw, nws tuaj yeem siv rau hauv kev tsim kho lub hauv paus, rau butting laj kab xov thiab kho kom zoo nkauj ntawm cov kab hauv qab. Cov khoom siv yog siv los npaj cov pob zeb tawg ntawm txoj hauv kev.

Hauv lub teb chaws ua vaj, pob zeb tawg yog xav tau thaum kho txoj hauv kev hauv lub tebchaws, ua kom lub hauv paus qis ntawm lub txaj. Nyob ntawm qhov loj me ntawm cov feem, nws tuaj yeem siv thaum tsim cov hauv paus ua ntej txoj kev asphalting thiab txhim kho paving slabs. Hauv toj roob hauv pes vaj, feem ntau siv pob zeb tawg ntawm qhov nruab nrab feem siv: thaum siv pob zeb me me, cov khoom siv hauv ib square meter yuav siab dua.

Tab sis rau kev tsim kho chaw ua si, cov pob zeb tawg-zeb sib xyaw tsis haum vim tias muaj kev pheej hmoo siab ntawm kev raug mob rau tus menyuam thaum ntog.

Hauv kev lag luam, cov pob zeb tawg tau siv los tsim cov pob zeb ntxiv thiab cov khoom ua vaj tsev … Cov khoom siv no tau siv hauv kev lag luam koom nrog kev tsim cov qhob ntawm ntau hom.