Lub sijhawm ntau ntawm kev kho tus kab mob rau tib txoj kev saum npoo av, nws yuav nyuaj dua los kho rau yav tom ntej, thiab ntau ntawm lawv yuav muaj qhov tshwm sim tias qhov ntau tus kab mob raug kho, nws yuav hnyav dua. Qhov no kuj yog vim li cas coob tus neeg ntsib kev kho mob pob zeb, kev cia siab tias yuav tuaj yeem kho tau ib zaug, vim hais tias tus kab mob tsuas yog tau txais kev kho mob, tuaj yeem txo tus nqi kho, tiv thaiv qhov teeb meem loj dua, qhov nyuaj nyuaj los kho qhov teeb meem Cov. Txog qhov loj, nws yog vim qhov tsis khov dej tsis kam thiab huab cua tsis kam tiv thaiv ntawm cov pob zeb qhob kev kho cov ntaub ntawv.
Yog tias cov pob zeb hauv av uas raug txua rov qab khov yog khov tom qab kho, txoj kev kho ntawm cov kab mob pob zeb tau poob nws cov nyhuv. Lub sijhawm no, nws yog qhov tsim nyog los kho lub sam thiaj uas raug puas lawm hauv lub sijhawm, thiab tom qab ntawd ntxuav cov cuab yeej kho kom zoo, thiab tom qab ntawd muab cov ntaub pua rooj ntawm cov ntaub pua plag uas puas lawm. Kev ua vaj tse pob zeb kho cov khoom siv yog cov khoom siv nrog lub zog khov tiv thaiv thiab muaj zog huab cua tiv thaiv, kom thiaj li daws tau cov teeb meem ntawm kev kho cov khoom khov. Lub pob zeb tshiab khiv uas kho tshiab tau khov. Txhawm rau txhim kho pob zeb ua kev pua pob zeb tseem ua kev txhim kho lwm yam kab mob. Yog tias kev kho zaum ob tsis tuaj yeem daws cov kab mob, tom qab kev txhim kho yuav nyuaj thiab nyuaj. Yog li ntawd, hauv txoj kev kho ob zaug, ua kom zoo txaus cov pua pob zeb kho cov khoom yuav tsum tau xaiv, tshwj xeeb tshaj yog cov thev dej tsis kam thiab huab cua tsis kam ntawm cov ntaub ntawv.
Hais txog huab cua tiv thaiv huab cua thiab huab cua tsis kam ntawm cov ntaub ntawv, nws tuaj yeem daws teeb meem los ntawm kev siv cov pob zeb ua kev tshiab kho cov khoom siv ntawm cov ntxaij zeb pob zeb kom daws tau cov teeb meem ntawm cov av pob zeb khov. Yog tias peb tuaj yeem siv cov ntaub ntawv tshiab los daws qhov teeb meem thaum pib ntawm kev ua pob zeb qhob, qhov tshwm sim ntawm kev kho kab mob yog ntau heev. Txawm li cas los xij, yog tias cov khoom pib pib tsis yog cov khoom siv, uas ua rau qhov tshwm sim ntawm cov av qhob khov, hauv kev kho thib ob, koj kuj tuaj yeem xaiv cov ntaub ntawv tshiab los daws qhov teeb meem. Cov khoom siv muaj cov cohesive loj loj, muaj zog tiv thaiv kev tiv thaiv huab cua thiab huab cua tsis kam, thiab lub siab ceev thiab flexural zog, uas tuaj yeem ua kom lub zog ntawm kev ua kom tau zoo, txhim kho qhov tshwm sim ntawm kev kho tus kab mob kom ua tiav, thiab daws cov teeb meem ntawm cov pob zeb pua pob zeb khoom siv Qhov teeb meem ntawm pavement khov tas vim muaj dej khov tsis kam
