Tread condition txiav txim siab tuav. Cov log tsheb khov feem ntau plam pib nrog tsis saib xyuas tread hnav. Ib yam li hnav cov khau tiaj tus ntawm lub tarmac, thaum qhov tob tob tshaj 3 hli, cov dej ntws thiab kev sib txhuam yuav txo qis. Kev tshuaj xyuas peb lub hlis twg pom zoo:
Tshawb xyuas cov kab nrib pleb los yog qhov chaw hardening.
Txheeb xyuas txawm tias hnav ntawm cov tread blocks (unilateral hnav yuav tsum tau cov khoom nruab nrab ntawm lub ntiajteb txawj nqus hloov).
Tshawb xyuas cov roj stains ntawm qhov chaw (tuaj yeem kho nrog cov tshuaj ntxuav tes tsis zoo).
Environmental suitability yog qhov tseem ceeb. Cov xwm txheej sib txawv yuav tsum muaj cov tswv yim sib txawv:
Kev cob qhia ntub thiab nplua: Ua ntej cov log tsheb nrog cov yoj yoj, vim tias lawv cov dej ntws tau zoo yog 40% siab dua cov treads ncaj nraim.
Kev ua haujlwm nqes hav: Tswj lub log tsheb siab ntawm qhov txwv qis ntawm tus nqi pom zoo kom nce qhov kev sib cuag.
Plua plav ib puag ncig: Ntxuav sab hauv ntawm lub log rims txhua lub lim tiam kom tiv thaiv kev tsim cov txheej lubricating.
Nthuav cov teebmeem ntawm kev ua haujlwm. Cov ntsiab lus no tuaj yeem txhim kho kev tiv thaiv -skid kev ua tau zoo:
Tsis txhob cia li pib thiab nres; Ua kom nrawm qis dua 0.3 m / s².
Txo qhov nrawm mus rau 60% ntawm ncaj- kab nrawm thaum tig.
Thaum lub load tshaj 80% ntawm qhov ntsuas load, nws raug pom zoo kom siv ob lub log nyob rau hauv parallel.