Thaum nws los txog rau cov vuas vov, ntau tus neeg paub txog lawv. Feem ntau ntawm lub nroog tam sim no yog ua los ntawm cov tsev siab, yog li cov vuas vov ntawm lub ru tsev yog qhov tseem ceeb heev, ob qho tib si ua ib qho ntxoov ntxoo los ntawm lub hnub thiab nag, thiab ua ib lub tsheb rau kev zoo nkauj Suav.

Jiangnan glazed vuas phab ntsa dawb, ib txwm muab rau ib tus neeg zoo siab. Raws li cov khoom siv hauv tsev, vuas muaj keeb kwm ntev hauv Suav teb, hnub rov qab mus rau thaum ntxov Western Zhou Dynasty. Muaj ob peb lub cib thiab vuas tau pom ntawm qhov chaw ntawm thaum ntxov Western Zhou Dynasty hauv Fengchu Village, Qishan, Shaanxi xeev. Asphalt vuas ua ib hom vuas tshiab, ntau tus neeg yuav txawv txawv, nws yog dab tsi ua los ntawm, nws tsis yog kev tiv thaiv ib puag ncig, nws lub neej kev pabcuam, hnub no los muab rau koj ib qho kev qhia ntxaws ntxaws.

Cov shingle asphaltyog ib hom ntawv tiv thaiv dej ntawm cov vuas vov tsev ua los ntawm fiberglass, npog ib sab tes nrog cov xim av me me thiab coated nrog cov khoom rwb thaiv tsev rau sab tod. SBS muaj kev ywj pheej zoo heev thiab tiv taus kev hloov pauv.

Tsis zoo li cov ntaub ntawv polymer, asphalt muaj cov khoom sib xyaw ua ke ntawm cov molecule me me. Lub zog khi ntawm cov molecule me me no yog nyob ntawm qhov kub thiab txias heev. Kev sib xyaw ua ke ntawm polymers thiab bitumen ua rau qhov sib txuas ruaj khov dua li cov bitumen nyoos thiab oxidized. Cov vuas asphalt feem ntau nyob ntawm cov vuas sab saud uas kaw cov vuas, kom tiv thaiv cua tshuab mus.

Cov shingle asphalt hloov kho SBS muaj peev xwm khoov tau raws li cua hlob thiab tom qab ntawd rov qab zoo, txo qhov ua tau tias cua yuav tsa. Cov vuas asphalt tseem hu ua cov vuas fiberglass, cov vuas linoleum, cov vuas fiberglass asphalt.

Lub neej ua haujlwm ntawm cov vuas asphalt txheem yog li peb caug xyoo, yog li peb yuav tsum xaiv cov chaw tsim khoom tsis tu ncua thaum peb yuav nws, kom qhov zoo ntawm cov vuas asphalt tuaj yeem lav zoo dua.

Tam sim no, ntau lub tsev nyob hauv lub tebchaws nyiam siv cov vuas asphalt, lossis qhov no yog kev nce qib hauv zej zog, kuv tsis paub tias koj tsev neeg cov vuas yog dab tsi?

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