Tsis ntev los no nrog txoj kev loj hlob sai ntawm kev tsim kho engineering, thev naus laus zis ntawm asphalt pob zeb ua qauv tau ua tiav sai thiab tau mus txog ntau qhov kev paub tab thiab kev ua tau zoo heev.
Tam sim no, asphalt pob zeb tau siv dav hauv kev tsim kho txoj kev loj, qhia txog nws txoj haujlwm tseem ceeb hauv kev tsim kho. Txawm li cas los xij, thaum pom cov kev ua tiav tau ua tiav, peb yuav tsum paub tias cov teeb meem deformation thiab kev puas tsuaj ntawm asphalt qhob pavement yog qhov hnyav zuj zus.
Cov qhov dej loj thiab deformations ntawm txoj kev tuaj yeem ua rau muaj kev cuam tshuam loj rau kev tsav tsheb.Basalt fiber ntau tws strandyog ib hom tshiab ntawm cov khoom siv fiber ntau, nrog nws cov khoom siv tshwj xeeb, kev ruaj ntseg zoo, thiab tus nqi siab ntawm kev ua tau zoo, ua rau nws yog cov khoom siv pob zeb zoo heev.
Kev ua tau zoo ntawmbasalt fiber ntau tws strand
Basalt fiber ntau tws strand yog ib qho inorganic ntxhia fiber ntau nrog qhov ntev ntawm tsawg dua 50mm, uas yog txiav los ntawm cov sib thooj basalt fiber substrate thiab tuaj yeem sib xyaw ua ke hauv pob zeb.
Basalt fiber ntau tws strandmuaj cov khoom zoo xws li siab axial tensile lub zog thiab siab modulus, nrog lub zog tensile ntawm 2250-2550MPa thiab elastic modulus ntau dua 78 GPa; luv luv basalt muaj qhov kub thiab txias tsis kam, tso cai rau nws ua haujlwm tsis tu ncua ntawm -269 txog 650 degrees Celsius; Nws muaj kev tiv thaiv corrosion siab thiab tshuaj lom neeg ruaj khov hauv corrosive media (acid, alkali, ntsev daws), thiab tuaj yeem tswj tau siab dua rau alkaline corrosion hauv saturated alkaline daws thiab cement thiab lwm yam alkaline xov xwm. Kev tuav tus nqi ntawm ib leeg hlau tawg lub zog yog ntau dua 75%; Basalt fiber chopped strand kuj tuaj yeem ua tau nrog cov nplaum tsis muaj kab mob, nrog rau qhov nqus noo noo tsawg dua 1% thiab lub peev xwm nqus dej tsis hloov lub sijhawm, uas ua pov thawj lawv cov khoom ruaj khov, ntev lifespan, thiab ib puag ncig kev sib raug zoo thaum siv; Tsis tas li ntawd, basalt fiber ntau chopped strand kuj muaj kev ua haujlwm zoo rwb thaiv tsev, pom qhov kub thiab txias, tiv thaiv hluav taws xob, thiab zoo yoj permeability. Table 1 qhia txog kev ua tau zoo ntawm basalt fiber ntau tws strand.
Daim ntawv thov kev tsom xam ntawm basalt fiber ntau tws strand hauv asphalt qhob pavement
Basalt fiber ntau tws strandasphalt pob zeb yog tsim los ntawm kev ntxiv basalt fiber ntau tws strand nyob rau hauv ib qho kev faib ua feem rau asphalt qhob cov ntaub ntawv rau txoj kev nto, thiab sib tov nyob rau hauv nruj sib tov piv, kub, av noo, sib tov lub sij hawm, thiab lwm yam.
Raws li paub zoo, ntxiv rau basalt fibers, cov ntaub ntawv fiber ntau xws li polyester fibers, ntoo fibers, thiab cov ntxhia wool fibers tuaj yeem siv los ua cov khoom siv ntxiv hauv kev txhawb nqa ntawm asphalt pob zeb. Txawm li cas los xij, kev siv cov fibers no tau ntau xyoo qhia tau hais tias muaj qee qhov teeb meem thaum lawv siv los ua cov khoom siv dag zog hauv asphalt pob zeb, xws li kev ua haujlwm tsis muaj zog tiv thaiv kev laus, kev ua kom tsis muaj zog, thiab muaj kev phom sij rau tib neeg kev noj qab haus huv.
Qhov tshwm sim ntawm basalt fiber ntau tws strand tau sau qhov sib txawv ntawm ob qho tib si cov ntaub ntawv thiab cov txheej txheem, daws cov teeb meem uas twb muaj lawm hauv asphalt qhob pavement uas twb muaj lawm thiab ua lub luag haujlwm tseem ceeb hauv kev txhawb nqa nws. Nws lub luag haujlwm hauv asphalt qhob pavement yog manifested nyob rau hauv cov nram qab no yam:
(1) Basalt fiber ntau tws strand, vim lawv qhov nqus dej tsawg, tuaj yeem muab ntxiv rau asphalt pob zeb ua kom cov tuab ntawm asphalt pavement, ua rau nws tsis tshua muaj kev tawg thiab tsis ruaj khov ntawm txoj kev vim dej nqus thiab nthuav dav.
(2) Basalt fiber ntau tws strand tsis tuaj yeem tsuas yog ua kom zoo dua ntawm lawv cov modulus siab thiab tensile lub zog, ib yam li steel fibers, los tiv thaiv kev nthuav dav ntxiv ntawm cov kab nrib pleb tom qab lawv tshwm sim, tab sis kuj kom tsis txhob muaj cov xwm txheej uas cov hlau fiber ntau tuaj yeem ua rau clumping thaum sib tov, uas tsis haum rau kev siv dej, thiab cov txheej txheem tsim kho yog complex.
(3) Cov chopped basalt fiber ntau yog ib tug raug nitric acid fiber, uas muaj zoo compatibility. Vim tias nws qhov chaw yog fluffy, nws tuaj yeem nqus tau asphalt, kom cov basalt fiber ntau sib npaug hauv cov pob zeb, tsim cov txheej txheem sib txuas, txhawm rau txhim kho kev laus ua haujlwm thiab ua haujlwm ntawm asphalt qhob pavement.
(4) Basalt fiber ntau tws strand muaj qhov kub thiab txias tsis kam. Nws qhov kub thiab txias ua haujlwm yog nyob nruab nrab ntawm qhov nruab nrab ntawm 270 mus rau 651 degrees Celsius, thiab nws tuaj yeem tswj kev ruaj ntseg hauv qhov kub thiab txias. Nws tseem tuaj yeem tiv thaiv kev poob ntawm cov ntxhia hauv pob zeb, txhim kho nws txoj kev ruaj ntseg, thiab txhim kho qhov kub thiab txias tsis kam rau rutting strain ntawm asphalt qhob pavement.
Tsis tas li ntawd, basalt fiber ntau chopped strand kuj muaj qhov zoo heev uas tsis muaj qhov kub thiab txias, tshwj xeeb tshaj yog rau kev txhim kho qhov kub-kub fission tsis kam ntawm asphalt qhob pavement.
Ntxiv basalt fiber ntau tws strand rau asphalt pob zeb tuaj yeem txhim kho qhov cuam tshuam, rutting tsis kam, thiab txhua yam khoom ntawm asphalt qhob pavement. Tshwj xeeb, basalt fiber ntau chopped strand ua lub luag haujlwm tseem ceeb hauv asphalt qhob pavement, xws li tawg tsis kam, tiv thaiv kev tawm tsam, ua haujlwm ntev, cuam tshuam tsis kam, tensile zog, thiab zoo nkauj.
Txoj kev tsim kho thiab kev ceev faj raubasalt fiber ntau tws strandasphalt pob zeb
(1) Kev tsim kho kub
Kev tsim kho kub ntawm basalt fiber ntau tws strand asphalt qhob yuav tsum tsis txhob qis dhau, vim tias basalt fiber ntau tws strand yuav txhim khu lub viscosity ntawm asphalt. Yog li ntawd, kev tsim kho kub ntawm luv luv basalt asphalt qhob yuav tsum siab tshaj li ntawm cov asphalt zoo tib yam pob zeb, txwv tsis pub nws yuav yooj yim ua rau tsis sib xws.
(2) Kev tsim kho kom zoo
Kev tsim kho kom zoo ntawm basalt fiber ntau tws strand asphalt pob zeb yuav tsum tau them sai sai rau qhov zoo ntawm kev tshuaj xyuas, ntsuas, thiab kev sib xyaw ua ke ntawm txhua yam khoom siv hauv basalt fiber ntau tws strand pob zeb.
Hauv kev tsim kho tiag tiag, qhov sib txawv ntawm qhov luv luv basalt yuav tsum raug xaiv nyob rau hauv ib qho kev tsim nyog raws li qhov xav tau ntawm engineering. Vim lub fact tias basalt fiber ntau tws strand lawv tus kheej tsis hnov mob nrog rau lwm yam qhob Cheebtsam thiab admixtures, lub fiber cov ntsiab lus yuav tsis hloov cov mix feem ntawm cov thawj pob zeb.
Thaum lub sij hawm tsim kho, qhov zoo ntawm ntau yam ntaub ntawv nyob rau hauv basalt fiber ntau tws strand reinforced pob zeb yuav tsum tau xam thiab txiav txim siab raws li kev tsim kho kev faib ua feem thiab ib tug sib tov tus nqi. Nws Junyong, Tian Chengyu, thiab lwm tus tau kawm txog qhov kev sib xyaw ua ke zoo tshaj plaws ntawm basalt fiber reinforced pob zeb los ntawm orthogonal tsim txoj kev sim. Tsib yam, suav nrog cov ntsiab lus fiber ntau, dej cement piv, cov hmoov tshauv ya, xuab zeb piv, thiab chav dej siv, tau raug xaiv los ua qhov tseem ceeb hauv kev sim.
Table 2 qhia qhov pom kev sib xyaw ua ke ntawm basalt fiber reinforced pob zeb tau los ntawm kev sim.
Kev sim tau pom tias ntau dua cov ntsiab lus ntawm basalt fiber ntau tws strand, qhov zoo dua qhov tawg tsis kam ntawm cov pob zeb, ntawm 1.2kg / m³ Nyob rau hauv ib qho kev sib txawv, lub zog compressive ntawm pob zeb nce ntxiv nrog cov ntsiab lus ntawm basalt fiber ntau. tws strand, ces txo thiab nce nyob rau hauv ib daim ntawv nkhaus.
(3) Kev pub noj ua ntu zus thiab txoj kev
Nyob rau hauv lub mixing txheej txheem ntawmbasalt fiber ntau tws strandasphalt pob zeb, kev noj cov kab ke ntawm basalt fiber ntau tws strand yuav tsum xav txog. Thaum siv, ntxiv basalt fiber ntau tws strand ua ke nrog aggregates xws li xuab zeb thiab pob zeb. Nws yog qhov zoo tshaj rau ntxiv xuab zeb thiab pob zeb tib lub sijhawm. Ntxiv basalt fiber ntau tws strand rau cov xuab zeb, ces ntxiv asphalt thiab ntub dej sib tov thiab do.
Txoj kev sib ntxiv fiber ntau tuaj yeem muab faib ua phau ntawv ntxiv thiab tsis siv neeg ntxiv. Artificial ntxiv hais txog manually ntxiv basalt fiber ntau tws strand uas tau raug hnyav tom qab kub aggregates ntxiv rau lub tank sib tov. Txawm li cas los xij, nws qhov tsis zoo yog kev siv zog ua haujlwm siab, tsis muaj kev sib xyaw ua ke, thiab qhov yuav tsum tau txuas ntxiv lub sijhawm sib xyaw raws li qhov xwm txheej tiag tiag kom ntseeg tau tias cov fibers tau tawg ntau sib npaug hauv asphalt pob zeb.
Kev pub mis tsis siv neeg yog hais txog kev siv lub tshuab basalt fiber ntau los ntsuas cov khoom siv ntxiv thiab muab tso rau hauv lub lauj kaub sib xyaw nrog rau cov kub sib xyaw ntawm cov khoom sib tov. Lub fiber feeder muaj qhov zoo xws li kev ntsuas tsis siv neeg, ua ntej crushing, thiab cua conveying mechanism, thiab muaj kev yooj yim, ceev, thiab raug fiber ntau ntxiv zog. Hauv kev siv tswv yim, cov txheej txheem tsim nyog yuav tsum raug xaiv raws li qhov tseeb ntawm kev tsim kho.
(4) Paving ceev faj
Ua ntej, kev saib xyuas yuav tsum tau them rau qhov huv ntawm paving nto; Tom qab ntawd preheat lub paver lub phaj ironing rau 120 degrees Celsius, thaum ua tib zoo mloog rau paving ceev, tswj nws nyob ib ncig ntawm 3 mus rau 4 meters ib feeb; Lub coefficient ntawm loosening yuav tsum tau txiav txim raws li qhov tseeb sim tso ntawm qhov project; Cov paving kub yuav tsum tau khaws cia ntawm 160 degrees Celsius.
(5) Kev tsim thiab kho
Qhob tov nrogbasalt fiber ntau tws strandyuav tsum tsis muaj tshwj xeeb yuav tsum tau thaum lub sij hawm molding, tsuas yog kom ntseeg tau tag nrho compaction ntawm asphalt qhob. Nws yuav tsum tau compacted kom ntau li ntau tau nyob rau hauv high kub tej yam kev mob.
Application piv txwv ntawmbasalt fiber ntau tws strandnyob rau hauv asphalt qhob pavement
Haining Interchange Connection Line ntawm Jiashao Txoj Kev Loj (nrog cov qauv pavement ntawm 20cm cement stabilized crushed pob zeb hauv paus thiab + 6cm (AC-20C) asphalt qhob thiab + 4cm (AC-16C) asphalt qhob) thiab 08 Provincial Road tau pom zoo los ntawm Haining Municipal Science thiab Technology Bureau. Txhawm rau tshawb nrhiav kev tshawb fawb thiab kev siv tau zoo los txhim kho txoj kev tiv thaiv rutting, xyuas kom muaj kev nyab xeeb thiab du ntawm txoj kev loj, thiab siv zog los kho cov kab mob rutting hauv ib qho yooj yim thiab yooj yim, nrog rau lub sij hawm tsim kho luv luv thiab cov nqi tu qis, Kev sim kho tau ua los ntawm kev hloov kho asphalt pob zeb nrog basalt fiber ntau tws strand.
Los ntawm qhov kev xav ntawm kev kho mob, qhov sib ntxiv ntawm basalt fiber chopped strand zoo heev txhim kho qhov kub-kub stability ntawm asphalt qhob pavement, txhim khu lub durability ntawm pavement, prolongs nws lub neej kev pab cuam, thiab txo qhov tshwm sim ntawm theem nrab ruts, muab ib tug ruaj khov guarantee. rau kev nyab xeeb tsav tsheb.
Xaus
Basalt fiber ntau tws strand, nrog lawv cov khoom siv tshwj xeeb, kev ruaj ntseg zoo, thiab tus nqi qis, ua rau lawv cov khoom siv pob zeb zoo heev. Daim ntawv thov kev cia siab ntawm basalt fiber ntau tws strand reinforced asphalt pob zeb yog dav heev. Cov txiaj ntsig kev lag luam thiab kev sib raug zoo yuav ua tiav qhov xwm txheej yeej-yeej, thiab nws yuav dhau los ua ib qho ntawm cov khoom siv hauv tsev loj hauv kev tsim kho txoj kev loj yav tom ntej.
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Post lub sij hawm: Mar-13-2024