Cov khoom ntawm Bitumen 15/25

Bitumen yog tus cwj pwm los ntawm nws cov khoom siv lub cev, uas tuaj yeem muab faib ua ke siv ntau lub tshuab ntsuas. Bitumen muaj 15/25 hais txog qhov kev ntsuas nkag mus rau cov khoom siv, qhia nws qhov sib xws thiab hardness. Cov lej qhia txog qhov tob tob hauv kaum ntawm ib millimeter ntawm tus qauv koob nyob rau hauv tej yam kev mob. Nyob rau hauv cov ntaub ntawv no, cov zauv qhia tias Bitumen 15/25 muaj ib tug nkag tau mus txog ntawm 15 mus rau 25 dmm ntawm 25 degrees Celsius.

Lub softer xwm ntawm Bitumen muaj 15/25 ua rau nws zoo tagnrho rau cov ntawv thov uas xav tau kev hloov pauv thiab yooj yim ntawm kev thov. Qib no tsis tshua muaj viscous piv rau cov qib nyuaj, muab cov khoom adhesion zoo dua thiab txo qhov kev pheej hmoo ntawm kev tawg nyob rau hauv ib puag ncig kev nyuaj siab. Tsis tas li ntawd, nws qhov qis qis qis tso cai rau nws ua tau zoo txawm tias nyob hauv huab cua sov, ua rau nws haum rau ntau thaj chaw.

Daim ntawv thov ntawm 15/25

Cov kev siv tseem ceeb ntawm Bitumen muaj 15/25 muaj feem ntau nyob rau hauv kev tsim kho thiab tu. Nws yog feem ntau siv rau hauv kev tsim cov asphalt, uas yog qhov tseem ceeb rau kev paving txoj kev, chaw nres tsheb, thiab tshav dav hlau khiav. Qhov yooj thiab ua haujlwm ntawm qib no ntawm bitumen ua kom nws sib xyaw nrog cov sib xyaw ua ke, ua kom muaj zog thiab ruaj khov asphalt uas tuaj yeem tiv taus cov tsheb thauj khoom hnyav thaum tuav lub ntsej muag du.

Tsis tas li ntawd, Bitumen 15/25 kuj tseem ua haujlwm hauv kev lag luam vov tsev, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov vov tsev thiab cov dej tsis zoo. Nws cov khoom siv dej tsis zoo ua rau nws tsim nyog rau kev tiv thaiv cov qauv los ntawm cov dej nkag, txuas ntxiv mus rau lub neej ntawm cov tsev thiab cov vaj tse. Cov khoom siv kuj tseem siv tau rau ntau yam kev siv, xws li hauv kev tsim cov sealants thiab cov nplaum vim nws cov khoom sib khi.

Qhov tseem ceeb hauv kev tsim kho niaj hnub

Qhov tseem ceeb ntawm 15/25 nyob rau hauv niaj hnub kev tsim kho tsis tuaj yeem overstated. Nrog rau kev xav tau ntau ntxiv rau kev ruaj khov thiab ruaj khov, qib ntawm bitumen no muab kev daws teeb meem zoo. Nws lub peev xwm los ua kom haum rau ntau yam kev siv ua rau cov engineers thiab cov kws tshaj lij tsim kho kom tau raws li cov kev xav tau tshwj xeeb thaum ua kom zoo dua cov nqi.

Tsis tas li ntawd, qhov kev ua tau zoo ntawm Bitumen 15/25 pab txhawb kev ua haujlwm ntev ntawm txoj kev thiab cov qauv. Los ntawm kev txo qhov zaus ntawm kev kho thiab tu, kev siv cov khoom siv no tuaj yeem ua rau muaj kev txuag nyiaj ntau hauv lub sijhawm thiab cov peev txheej. Tsis tas li ntawd, raws li kev lag luam hauv nroog txuas ntxiv nce mus thoob ntiaj teb, qhov xav tau rau cov khoom siv txhim khu kev qha thiab muaj zog zoo li Bitumen 15/25 ua qhov tseem ceeb dua.

Kev tsim kho thiab kev vov tsev

cov Bitumen yog ib yam khoom tseem ceeb hauv kev tsim kho, feem ntau paub txog nws qhov muag muag thiab yooj yim. Nws siv nyob rau hauv kev tsim kho thiab vov tsev qhia txog nws cov kev ua tau zoo thiab kev ua tau zoo hauv ntau yam ib puag ncig. Raws li kev tsim kho kev lag luam ntsib cov teeb meem cuam tshuam txog kev ruaj khov thiab ruaj khov, cov ntaub ntawv zoo li Bitumen 15/25 yuav txuas ntxiv mus ua lub luag haujlwm tseem ceeb hauv kev tsim cov txheej txheem niaj hnub thiab ua kom nws tuaj yeem tiv taus cov kev sim ntawm lub sijhawm thiab huab cua. Nkag siab thiab siv qhov no qib ntawm bitumen ua tau zoo tso cai rau kev txhim kho engineering kev coj ua, thaum kawg pab txhawb rau cov zej zog muaj kev nyab xeeb thiab muaj zog dua.

Yam	specification	Kuaj qauv
Lub ntiajteb txawj nqus @ 25/25 cg	1.01/1.06	D-70
Kev nkag mus @ 25 c	25/15	D-5
Softening point c	60/76	D-36
Kev hlub @25c	100 min	D-113
Poob ntawm cua sov (wt)%	0.2 Max	D-6
Tso rau hauv kev nkag mus tom qab cua sov%	20 Max	D-6 D-5
Flash point c	250 min	D-92
Solubility yog CS2 (wt)%	99.5 Max	D-4
Kev kuaj mob	tsis zoo	TIAB SA 102