1. Lub zog muaj zog, vim yog siv cov yas fiber ntau, nws tuaj yeem tuav tag nrho lub zog thiab elongation nyob rau hauv qhuav thiab ntub dej.
2. Corrosion kuj, ntev corrosion kuj nyob rau hauv cov av thiab dej tsis muaj ph.
3. Cov dej zoo permeability, muaj qhov sib txawv ntawm cov fibers, yog li nws muaj dej permeability zoo.
4. Zoo microbial tsis kam, kev puas tsuaj rau cov kab mob thiab npauj-noj daim ntaub.
5. Kev tsim kho yooj yim, vim tias cov khoom siv yog lub teeb thiab mos, nws yooj yim rau kev thauj, nteg thiab tsim kho.
