Taw qhia
Asphalt yog cov khoom siv dav siv hauv kev tsim kho txoj kev, txoj kev loj, thiab lwm hom paving nto. Nws yog tsim los ntawm kev sib xyaw ntau yam ntaub ntawv ua ke hauv cov nroj tsuag asphalt, uas tsim cov khoom kawg. Ib qho tseem ceeb tshaj plaws hauv kev tsim cov asphalt zoo yog lub sijhawm sib xyaw. Hauv tsab xov xwm no, peb yuav tshawb xyuas lub sijhawm sib xyaw rau cov nroj tsuag asphalt kom ntxaws.
Dab tsi yog tsob ntoo asphalt?
Ua ntej peb dhia mus rau hauv cov ntsiab lus ntawm kev sib xyaw lub sijhawm, nws yog ib qho tseem ceeb kom nkag siab tias cov nroj tsuag asphalt yog dab tsi thiab nws ua haujlwm li cas. Ib tsob nroj asphalt yog ib qho chaw uas tsim cov asphalt los ntawm kev sib xyaw ntau yam sib xyaw nrog asphalt cement. Cov txheej txheem pib nrog cua sov ntawm cov aggregates nyob rau hauv lub tshuab ziab khaub ncaws. Tom qab ntawd cov rhuab aggregates yog tov nrog asphalt cement nyob rau hauv lub nruas sib tov. Thaum cov txheej txheem sib xyaw ua tiav, cov asphalt kub tau muab tso rau hauv cov thawv ntim khoom cua sov kom txog thaum nws npaj tau thauj mus rau qhov chaw ua haujlwm.
Lub sijhawm sib xyaw rau asphalt nroj tsuag yog dab tsi?
Lub sijhawm sib xyaw rau cov nroj tsuag asphalt yog lub sijhawm uas nws yuav siv sijhawm los sib xyaw kom zoo rau cov rhuab aggregates thiab asphalt cement hauv qhov sib xyaw nruas. Qhov zoo ntawm cov khoom kawg yog ncaj qha cuam tshuam los ntawm lub sijhawm sib xyaw. Yog tias lub sijhawm sib tov luv dhau, cov asphalt yuav tsis zoo sib xyaw, ua rau cov khoom tsis zoo kawg. Ntawm qhov tod tes, yog tias lub sijhawm sib tov ntev dhau lawm, asphalt tuaj yeem dhau los ua kom sov thiab pib tawg, uas tuaj yeem ua rau cov khoom tsis zoo kawg.
Yam tseem ceeb uas cuam tshuam rau lub sijhawm sib xyaw
Muaj ntau ntau yam uas tuaj yeem cuam tshuam lub sijhawm sib xyaw rau asphalt nroj tsuag. Thawj qhov tseem ceeb yog hom asphalt raug tsim. Ntau hom asphalt yuav tsum sib txawv lub sij hawm sib tov, nyob ntawm seb lawv muaj pes tsawg leeg thiab viscosity. Lwm qhov tseem ceeb uas tuaj yeem cuam tshuam lub sijhawm sib xyaw yog cov cuab yeej siv. Ntau hom kev sib xyaw nruas muaj ntau lub sijhawm sib xyaw, yog li nws yog ib qho tseem ceeb uas yuav tsum xaiv cov khoom siv rau txoj haujlwm. Tsis tas li ntawd, qhov loj ntawm lub tov khoom tuaj yeem cuam tshuam lub sijhawm sib xyaw. Lub tov khoom loj tuaj yeem xav tau lub sijhawm sib tov ntev dua kom muab cov khoom sib xyaw kom zoo, thaum lub tshuab me me yuav xav tau lub sijhawm sib xyaw luv dua.
Lub sijhawm sib xyaw ua haujlwm li cas?
Lub sijhawm sib xyaw rau cov nroj tsuag asphalt feem ntau txiav txim siab los ntawm kev sim thiab ua yuam kev. Lub sijhawm sib xyaw thawj zaug yog txiav txim siab raws li hom asphalt tau tsim thiab cov cuab yeej siv. Thaum pib lub sijhawm sib xyaw, cov qauv ntawm asphalt raug coj los ntawm ntau lub sijhawm thaum sib xyaw. Cov qauv no raug tshuaj xyuas rau lawv qhov sib xws thiab lwm yam khoom siv lub cev. Raws li cov txiaj ntsig ntawm cov kev tshuaj ntsuam no, lub sijhawm sib xyaw tuaj yeem hloov kho raws li qhov xav tau los tsim cov khoom zoo ntawm asphalt.
Qhov tseem ceeb ntawm kev sib xyaw lub sijhawm
Lub sijhawm sib xyaw rau asphalt nroj tsuag yog qhov tseem ceeb hauv kev tsim cov asphalt zoo. Yog tias lub sijhawm sib tov luv dhau, cov asphalt yuav tsis zoo sib xyaw, uas ua rau cov khoom kawg uas nws yuav ua rau tawg thiab lwm yam kev puas tsuaj. Ntawm qhov tod tes, yog tias lub sijhawm sib tov ntev dhau lawm, asphalt tuaj yeem dhau los ua kom sov thiab pib tawg, uas tuaj yeem ua rau cov khoom tsis zoo kawg. Los ntawm kev kho lub sijhawm sib xyaw kom zoo, cov neeg tsim khoom asphalt tuaj yeem xyuas kom meej tias lawv cov khoom tiav ua tau raws li cov qauv zoo tshaj plaws.
Xaus
Hauv kev xaus, lub sijhawm sib xyaw rau asphalt nroj tsuag yog qhov tseem ceeb hauv kev tsim cov asphalt zoo. Kev sib xyaw kom raug lub sij hawm ua kom ntseeg tau tias tag nrho cov khoom sib xyaw kom zoo, ua rau cov khoom tiav uas muaj zog, ruaj khov, thiab kav ntev. Los ntawm kev nkag siab txog cov xwm txheej uas cuam tshuam rau lub sijhawm sib xyaw thiab seb nws txiav txim siab li cas, asphalt cov neeg tsim khoom tuaj yeem ua cov kauj ruam tsim nyog los xyuas kom meej tias lawv cov khoom tiav raws li cov qauv zoo tshaj plaws.
