Dab tsi yog qhov zoo ntawm cov khoom siv dag?

Taws dag tau muaj qhov zoo tshaj plaws ntawm lub ntsej muag, lub caij ntsuab, vividness, kev ua kua zoo, lub neej ua haujlwm ntev thiab nqi kho tsawg.
Cov kev xav tau zoo rau lub hauv paus ntawm kev ua si ntawm cov khoom ua sifluffs mas yog qhov tseem ceeb ntawm peb yam: qhov nyuaj, kev ua kom tiaj thiab qhov dej nqeg.
Muaj peb theem ntawm cov khoom siv dag uas feem ntau siv: asphalt base, cement base, thiab gravel base. Yam twg yog qhov kev nyab xeeb ntawm cheeb tsam, qhov chaw, nyiaj txiag, thiab lub sijhawm, thiab asphalt puag yog tsim rau huab cua kub txawv thiab tsawg lub caij ntuj no nyob rau sab qaum teb. Tib lub sij hawm, vim tias nws cov nqi siab, nws tsis yog qhov tsim nyog rau hom kev ua kom sov thiab dej ntub. Vim hais tias kev tsim kho ntawm cov vuas pob zeb yooj yim, nws cov nqi tsim kho tsawg tsawg, thiab kua dej yog sai, nws yog nyob rau sab qab teb, tab sis vim nws cov pligidity thiab stability tsis zoo, Tom qab siv lub caij nyoog ntev, cov ntsiab lus xoob yuav tshwm sim, ua rau tsis sib luag lub hauv paus; Yog li ntawd, nyob rau feem ntau cov cheeb tsam ntawm Suav teb, cov kev sib koom ua cement cement tau dhau los ua ib qho kev lag luam, cov tswv yim, thiab kev tsim cov khoom nyom yooj yim. Shuanghe Cov kev ua si muaj nplua nuj nyob hauv cov nroj tsuag ciav hlau.