Taw qhia: Bitumen 60/70 vs 80/100

Thaum muab piv 60/70 vs 80/100, thawj qhov sib txawv yog nyob rau hauv lawv hardness thiab kev ua tau zoo nyob rau hauv txawv huab cua. Bitumen 60/70 muaj ib qho nyuaj sib xws thiab yog li ntawd ua tau zoo dua nyob rau hauv hnyav tsheb thiab kub kub. Piv txwv li, 80/100 tseem softer thiab hloov tau yooj yim, yog li nws ua haujlwm zoo dua nyob rau hauv cov cheeb tsam txias dua qhov chaw pavements fim contraction thiab expansion. Vim li no, qib raug yog nyob ntawm kev nyab xeeb thiab kev thauj mus los. Cov kws tsim qauv xaiv 60/70 rau txoj kev loj hauv cov chaw kub, thaum lawv xaiv 80/100 rau cov tsheb loj hauv nruab nrab lossis qhov chaw txias.

Basekim muab ob qho kev nkag mus rau qib nrog cov ntawv pov thawj thoob ntiaj teb rau kev tsim khoom asphalt thiab kev tsim kho vaj tse.

Vim li cas Cov Qib no txawv ntawm kev ua tau zoo

Txawm hais tias ob qho tib si cov khoom lag luam muaj nyob rau tib qeb kev nkag mus, cov txiaj ntsig kev sim qhia tau sib txawv. Bitumen 60/70 muab kev nkag mus ntawm 60 thiab 70 dmm, whereas bitumen 80/100 tso cai nkag mus ntawm 80 thiab 100 dmm. Yog li ntawd, 60/70 coj tus cwj pwm nyuaj dua, thiab 80/100 coj zoo li softer. Qhov kev sib txawv ntawm qhov tawv nqaij no ua rau cov txiaj ntsig sib txawv hauv asphalt durability, deformation tsis kam, ua haujlwm tau zoo, thiab tus cwj pwm tawg.

Tus lej nkag qib txhais li cas?

Kev nkag mus rau bitumen kev faib tawm yog nyob ntawm qhov tob ntawm tus qauv koob nkag mus rau hauv phau ntawv ntawm 25 ° C. Qhov tshwm sim tshwm nyob rau hauv kaum ntawm ib millimeter (dmm). Nyob rau hauv lwm yam lus, tus nqi nkag ncaj qha sawv cev rau hardness thiab binder stiffness. Piv txwv li:

• Bitumen 60/70: nkag mus ntawm 60 thiab 70 dmm

• Bitumen 80/100: nkag mus ntawm 80 thiab 100 dmm

Vim tias 60/70 qhia tau hais tias kev nkag mus qis dua, nws muab cov qauv nyuaj thiab ruaj khov dua. Lub caij no, 80/100 muaj qhov sib xws ntawm softer uas txhim kho kev hloov pauv hauv cov huab cua txias. Yog li ntawd, tus lej system ua kom yooj yim xaiv qib raws li kev xav tau ntawm ib puag ncig thiab kev tsav tsheb.

Bitumen 60/70: Khoom thiab Siv

Bitumen 60/70 muaj tus nqi nkag mus qis dua, yog li nws muaj qhov hnyav dua thiab ruaj khov rau kev ua haujlwm hauv thaj chaw sov. Nws tiv taus cov tsheb loj thauj khoom zoo thiab tuav cov duab ntawm qhov kub thiab txias. Vim tias nws muaj qhov muag muag ntau dua, nws tiv thaiv cov teeb meem rutting thiab kev laus thaum lub sijhawm ua haujlwm ntev.

Qhov twg nws ua haujlwm zoo tshaj plaws

• Txoj kev loj thiab kev lag luam nrog kev siv tsheb hnyav

• Asphalt sib tov nyob rau hauv cov huab cua kub yuav tsum muaj zog deformation tswj

• Infrastructure tej yaam num uas durability thiab stability tseem ceeb tshaj plaws

Yog li ntawd, txoj kev tsim qauv cia siab rau bitumen 60/70 rau cov qauv kev ua tau zoo thiab txo tus nqi txij nkawm hauv qhov xav tau ib puag ncig.

Bitumen 80/100: Khoom thiab Siv

Bitumen 80/100 muaj cov qauv softer nrog tus nqi nkag siab dua, uas txhim kho kev hloov pauv hauv huab cua txias. Nws absorbs contraction stresses zoo thiab txhawb nqa compaction thaum lub sij hawm asphalt ntau lawm. Vim li no, nws tiv thaiv thermal tawg thiab txhawb kev qaug zog ntev ntev.

Qhov twg nws ua haujlwm zoo tshaj plaws

• Txoj kev hauv nroog thiab hauv cheeb tsam nrog kev tsheb khiav qis

• Pavements raug rau khov-thaw cycles

• Overlay thiab tu tej yaam num yuav tsum tau yoog raws tus cwj pwm

Yog li, bitumen 80/100 muaj kev txhim khu kev qha pavement qhov kev hloov pauv huab cua xav tau elasticity ntau dua li qhov siab tshaj plaws.

Bitumen 60/70 vs 80/100: Tag nrho cov lus sib piv

Raws li cov lus qhia, ob qib muab kev ua tau zoo tab sis nyob rau hauv cov haujlwm sib txawv. Yog li ntawd, kev nkag siab txog qhov chaw ua haujlwm tseem ceeb tseem ceeb ua ntej kev yuav khoom.

Climate-Based Decision Factors

Qhov kub thiab txias cuam tshuam tus cwj pwm pavement ncaj qha. Piv txwv li, qhov kub thiab txias ua rau cov txheej txheem asphalt. Yog li, txoj kev hauv huab cua sov lossis suab puam xav tau cov ntaub ntawv nyuaj dua li 60/70. Tsis tas li ntawd, cov tsheb thauj khoom hnyav nce txoj kev nyuaj siab, uas ua rau rutting yog tias cov ntaub ntawv tseem mos.

Ntawm qhov tod tes, cov teb chaws txias dua raug kev txom nyem los ntawm kev cog lus thiab kev nthuav dav. Yog li ntawd, cov qib softer xws li 80/100 ua tau zoo dua vim lawv nqus kev ntxhov siab thiab tiv thaiv kev tawg. Yog li ntawd, xaiv cov qib raws li qhov nruab nrab ntawm lub caij ntuj sov ua kom muaj kev ua haujlwm ntawm txoj kev pavement kom raug.

Traffic-Based Decision Factors

Thaum cov tsheb thauj mus los tseem siab, cov txheej asphalt faib cov khoom hnyav rau hauv cov qauv hauv qab. Vim li no, ib tug txhav binder yog tsim nyog los tswj stability. Bitumen 60/70 txhawb nqa txoj kev loj, kev thauj mus los, thiab kev thauj khoom terminals vim nws lub zog muaj zog.

Lub caij no, rau cov tsev nyob, nyob deb nroog, lossis hauv nroog txoj kev uas muaj kev tsheb nruab nrab, bitumen 80/100 muaj kev ruaj khov txaus nrog kev tiv thaiv kom qaug zog. Yog li ntawd, asphalt designers yuav tsum ib txwm soj ntsuam cov axle counts thiab xav kom tsheb loj hlob ua ntej ua tiav qib.

Asphalt Mix Design Performance

Binder nruj thiab yooj yooj yim cuam tshuam aggregate interlock. Raws li qhov tshwm sim, qhov kev xaiv qib hloov pauv qhov sib xyaw ua ke.

• Bitumen 60/70 txhim kho rutting kuj thiab cov qauv kev ruaj ntseg. Tsis tas li ntawd, nws pab txhawb kev laus mus ntev.

• Bitumen 80/100 ua rau kom tawg tsis kam, layout yooj, thiab compaction efficiency.

Yog li, engineers yuav tsum sib npaug zog thiab elasticity los tiv thaiv ob qho tib si rutting thiab cracking, kom ntseeg tau tias asphalt zoo tshaj kaum xyoo.

Kev Tswj Xyuas Zoo, Cov Qauv, thiab Ntim

International specifications xws li ASTM D946 thiab EN 12591 tswj bitumen kev ua tau zoo zog. Basekim ua raws li cov qauv no los ntawm kev soj ntsuam tas li ntawm kev nkag mus, qhov muag muag, viscosity, thiab ductility. Ntxiv mus, kev ntim khoom txhim khu kev qha tiv thaiv kev sib kis thaum thauj thiab khaws cia.

Cov kev xaiv ntim khoom muaj xws li:

• Tshiab steel nruas

• Poly hnab los yog jumbo hnab

• Bulk tanker thiab bitutainer xa khoom

Vim tias kev tiv thaiv cov saw hlau cuam tshuam rau cov khoom lag luam zoo, cov ntaub ntawv pov thawj tseem yog qhov tseem ceeb ntawm kev yuav khoom.

Kev Pom Zoo Kawg

Hauv cov ntsiab lus, qhov kev xaiv raug hauv Bitumen 60/70 vs 80/100 nyob ntawm ib puag ncig thiab xav tau kev thauj khoom:

xaiv 60/70 rau:

• Cov huab cua kub thiab thaj chaw suab puam

• Txoj kev nrog hnyav qag load

• Pavements xav tau kev ruaj ntseg siab

xaiv 80/100 rau:

• Cov huab cua txias los yog nruab nrab

• Kev tsheb nruab nrab

• Saj zawg zog pavement designs uas tiv thaiv cracking

Yog li ntawd, cov qib zoo sib xws nrog cov huab cua hauv cheeb tsam thiab kev faib tsheb khiav tsis yog tus nqi ib leeg.

Basekim txhawb nqa cov neeg siv khoom nrog kev xaiv qib raug, kev taw qhia, thiab cov khoom sib xws ntawm ob qib nkag mus rau kev lag luam thoob ntiaj teb.