Bentonite hais swell raws li kev sib cuag nrog dej, tsim ib tug uniform colloidal system. Raws li kev txwv ntawm ob txheej ntawm geotextile, bentonite nthuav tawm los ntawm lub xeev tsis sib haum mus rau ib qho kev txiav txim, thiab kev nqus dej tas mus li thiab nthuav tawm ua rau lub compaction ntawm bentonite txheej, yog li muab waterproofing.
Seepage Prevention Principple: Lub npe mineralogical rau bentonite yog montmorillonite. Ntuj bentonite feem ntau muab faib ua ob pawg raws li nws cov tshuaj muaj pes tsawg leeg: sodium-raws li thiab calcium-raws li. Bentonite muaj cov yam ntxwv ntawm o thaum sib cuag nrog dej. Thaum calcium-raws li bentonite swells, nws nthuav mus rau tsuas yog peb npaug ntawm nws cov ntim qub, thaum sodium-raws li bentonite absorbs tsib npaug ntawm nws qhov hnyav hauv dej, nthuav mus rau 15-17 npaug ntawm nws qhov loj me lossis ntau dua. Qhov no sodium-based bentonite yog kaw ntawm ob txheej ntawm cov khoom siv geosynthetic, muab kev tiv thaiv thiab kev txhawb zog, muab GCL ib qho tag nrho shear zog.
Nta
1.Denseness: Sodium bentonite tsim ib lub siab - ntom ntom diaphragm nyob rau hauv dej siab. Ntawm qhov tuab ntawm kwv yees li 3 hli, nws qhov permeability qis dua 5 × 10⁻¹¹ m / s, sib npaug li 100 npaug ntawm qhov ntom ntawm 30cm tuab av nplaum, ua rau nws tus kheej muaj zog - dej- tuav cov khoom.
2. Kev Tiv Thaiv Tsis Muaj Dej: Raws li sodium bentonite yog cov khoom siv tsis zoo, nws yuav tsis muaj hnub nyoog lossis corrode txawm tias tom qab lub sijhawm ntev lossis kev hloov pauv ntawm ib puag ncig ib puag ncig, yog li ua kom ntev - waterproofing.
3. Kev tsim kho yooj yim: Piv nrog rau lwm cov khoom siv dej tsis zoo, kev tsim kho yog qhov yooj yim, tsis tas yuav tsum muaj cua sov lossis cov nplaum. Nws tsuas yog yuav tsum tau bentonite hmoov, rau tes, ntxhua khaub ncaws, thiab lwm yam, rau kev sib txuas thiab kho. Tsis muaj kev tshuaj xyuas tshwj xeeb yog xav tau tom qab kev tsim kho, thiab cov dej tsis huv yog yooj yim kho. GCL muaj lub sijhawm siv luv tshaj plaws ntawm cov ntaub ntawv pov thawj uas twb muaj lawm.
4. Tsis muaj kev cuam tshuam los ntawm qhov kub thiab txias: Nws yuav tsis ua nkig hauv cov huab cua txias.
5. Kev koom ua ke ntawm cov khoom siv dej tsis zoo thiab qhov chaw: Sodium-raws li bentonite nthuav tawm 20-28 npaug ntawm nws qhov loj me thaum raug dej. Txawm hais tias cov qauv pob zeb muaj kev vibration thiab kev sib haum xeeb, cov bentonite hauv GCL tuaj yeem kho cov kab nrib pleb mus txog 2 hli hauv cov pob zeb.
6. Ntsuab thiab Environmentally Friendly: Bentonite yog cov khoom siv ntuj tsim tsis muaj kev cuam tshuam rau ib puag ncig thiab kev ua haujlwm zoo ib puag ncig.
Khoom Nta: Kev ua tau zoo siab- rau- tus nqi piv, ntau yam kev siv ntau heev. Khoom dav mus txog 6 meters, zoo heev txhim kho kev tsim kho efficiency.
Daim ntawv thov Scope thiab tej yam kev mob: Tsim nyog rau lub nroog (landfill), kev txuag dej, kev tiv thaiv ib puag ncig, tsim cov pas dej, thiab underground waterproofing thiab seepage tiv thaiv tej yaam num nyob rau hauv lub tsev.
