Lub bentonite waterproof pam yog ua los ntawm expansive sodium-raws li bentonite ntim ntawm ib tug tshwj xeeb composite geotextile thiab ib tug uas tsis yog-woven npuag.
Lub bentonite impermeable lev ua los ntawm rab koob punching tuaj yeem tsim ntau qhov chaw me me.