I. Geological Properties & Product Definitions
Core Parameters & Formation Mechanisms
Particle Size Grading:
Cov pob zeb zoo: 2-10 mm
Coarse gravel: 10-100 mm
Cobble: >100 hli
Ntuj tsim:
Rounded pob zeb: Dej- polished dhau lub sij hawm, du nto, superior permeability (porosity Ntau dua los yog sib npaug li 30%)
Pob zeb crushed: Mechanically fractured bedrock, angular npoo, txhim khu kev cuam tshuam muaj peev xwm
Lub cev muaj zog:
| Parameter | Rounded River Gravel | Crushed Gravel |
|---|---|---|
| Compressive zog | >600 kg/m² | >800 kg/m² |
| Dej ntws | Zoo heev (smooth nto) | Nruab nrab (angular edges impede flow) |
| Kev sib txhuam | Tsawg (rollable) | Siab ( ntxhib los tiv thaiv - plam nto) |
| Kev siv thawj zaug | Kev kho dej / kho kom zoo nkauj | Txoj kev hauv paus / yaig tswj |
II. Classification System & Cov khoom tseem ceeb
Ntuj Gravel
Rounded dej gravel:
Tsim: Dej- polished, uniform loj (4-75 mm)
Daim ntaub ntawv: Zen qhuav toj roob hauv pes vaj, thoob dej yug ntses scaping, biofiltration media
Terrace pob zeb:
Yam ntxwv: Ancient Riverbed deposits nrog av nplaum- xuab zeb txheej
Daim ntawv thov: pob zeb sib sau ua ke, av hloov kho
Txheej Gravel
Pob zeb crushed:
Ntau lawm: Mechanical crushing + tshuaj ntsuam (1-75 hli tswj kev ntsuas)
Qhov zoo: Angularity txhim kho txoj kev ruaj ntseg (+40% compressive zog)
Tsim cov xuab zeb:
Tshuab: Siab-siab sib tsoo yob (xws li Metso HRC 8™) ua cov pob zeb pov tseg
Cov txiaj ntsig: Tsis tshua muaj zog (50% txo lub zog), tswj tau cov khoom zoo
III. Daim Ntawv Thov & Engineering Standards
Kev tsim kho engineering
Roadbed puv:
Crushed gravel rau rail / highway subgrades (cov txheej txheem txheej tsawg dua lossis sib npaug li 30cm, K30 Ntau dua lossis sib npaug li 110 MPa / m)
Qhob aggregate:
Gravel tsim 60-75% ntawm kev sib xyaw, ua kom C30-C60 lub zog pob zeb
Hydraulic & Ib puag ncig
Media kho dej:
Layered configuration: Coarse gravel (base) → fine gravel (mid) → sand (top), >90% tshem tawm cov khib nyiab tshem tawm
Eco-rov qab:
Rounded gravel paving (1: 3 txoj kab nqes), txhawb cov nroj tsuag kev loj hlob (+50% erosion resistance)
Landscaping & Municipal
Permeable paving:
Crushed gravel subbase (15-20cm) + rounded gravel nto, permeability Ntau dua lossis sib npaug li 0.5 cm / s
Zen qhuav vaj:
Dawb zoo gravel (2-5mm) simulating dej ntws, accented nrog pob zeb
IV. Kev Sib Tw Kev Lag Luam & Kev Txhim Kho Tshuab
Kev nyuaj siab
Resource sustainability: River gravel tshaj -extraction degrades dej ecosystems
Quality inconsistency: Excessive elongated/flaky particles in crushed gravel (>10% txo cov pob zeb muaj zog)
Kev daws teeb meem tshiab
Ntsuab ntau lawm:
Txawb crushers (piv txwv li, Metso Nordwheeler ™) txheej txheem tsim khoom pov tseg ntawm -site, txo kev thauj CO₂
AI sorting:
Lub tshuab hluav taws xob pom kev tsis lees paub cov khoom tsis zoo hauv lub sijhawm tiag tiag- (+30% tawm los)
Recycled gravel:
Crushed demolition pob zeb hloov cov pob zeb ntuj (20% tus nqi txo)
V. Kev Qhia Txog Kev Muag Khoom & Cov Ntaub Ntawv Ua Lag Luam
Kev soj ntsuam zoo Matrix:
Ntiaj teb no Supply Chain:
Kev tsim kho vaj tse zoo nkauj: Cov peev txheej dej Yangtze (25-40% hwm)
Muaj crushed gravel: Hebei ua hub (60% ntawm Tuam Tshoj cov zis)
Xaus: Pob zeb - Los ntawm Geological cuab yeej cuab tam rau Sustainable Infrastructure Cav
"Rounded gravel embodies dej millennia ntawm sculpting txawj ntse; crushed gravel epitomizes mechanical innovation - ua ke lawv tsim kev vam meej lub bedrock."