Kev Txhim Kho Kev Ua Haujlwm thiab Kev Tshawb Fawb Txog Kev Siv Engineering ntawm Short-Cut Basalt Fiber-Reinforced Concrete

Nyob rau hauv xyoo tas los no,Kev tsim kho txoj kev loj hauv Suav teb Kev Tsim Kho tau tsim kho sai heev, thiab cov thev naus laus zis ntawm cov qauv pob zeb tau ua tiav kev vam meej tseem ceeb, sau ntau yam kev ua tiav siab heev thiab paub tab. Kev tsim qauv pob zeb tau siv dav hauv kev tsim kho vaj tse, qhia txog nws qhov tseem ceeb. Txawm li cas los xij, nrog rau cov kev ua tiav no, qhov teeb meem ntawm kev tawg ntawm cov pob zeb ua vaj tse tab tom ua kom pom tseeb zuj zus. Qhov muaj cov kab nrib pleb ua rau kev ua haujlwm ntawm cov pob zeb tsis zoo, qhov tseem ceeb txo nws cov lub zog tensile, uas yog qhov laj thawj tseem ceeb rau qhov kev puas tsuaj brittle uas pom los ntawm concrete. Cov fiber basalt luv luv, ua ib yam khoom siv fiber tshiab, tau dhau los ua cov khoom siv txhim kho pob zeb zoo heev vim nws cov khoom siv kho tshuab tshwj xeeb, kev ruaj khov zoo, thiab kev siv nyiaj tsim nyog.Tsab xov xwm no yuav tsom mus rau cov yam ntxwv ntawm kev txiav luv luv Basalt Fiber thiab tshawb nrhiav nws daim ntawv thov hauv kev txhawb nqa thiab ua kom muaj zog.

2. Cov Khoom ntawm Short-Cut Basalt Fiber

2.1 Lub Ntsiab Lus

basalt fiber yog ib qho inorganic mineral fiber uas tau ua tiav los ntawm kev txiav cov basalt fiber txuas ntxiv mus rau hauv qhov ntev feem ntau tsawg dua $50\text{hli}$. Nws tuaj yeem sib xyaw ua ke hauv cov pob zeb ua vaj tse. Raws li nws daim ntawv thov, nws tuaj yeem raug cais ua pawg: cov fiber tiv thaiv kev tawg rau cov pob zeb ua vaj tse ($\text{BF}$), cov fiber uas ua kom tawv thiab ua kom cov pob zeb khov kho ($\text{BZ}$), thiab cov fiber tiv thaiv kev tawg rau cov mortar ($\text{BSF}$), ntawm lwm tus.

2.2 Kev ua tau zoo ntawm Fiber Basalt luv luv

Kev txiav luv luv basalt fiber muaj cov yam ntxwv zoo heev ntawm muaj zog heev thiab siab modulus. Nws lub zog tensile tuaj yeem ncav cuag $1050\text{-}1250\text{MPa}$, thiab nws cov elastic modulus tsis tsawg dua $34\text{GPa}$. Nws cov kev tiv taus kub siab zoo kawg nkaus, cia nws ua haujlwm tas li hauv qhov kub thiab txias ntau ntawm −269∘C mus rau 650∘C. Nws qhia tau tias muaj ntau yam kev tiv thaiv xeb thiab kev ruaj khov tshuaj lom neeg nyob rau hauv cov xov xwm corrosive xws li acids, cov alkalis, thiab ntsev. Tshwj xeeb tshaj yog nyob rau hauv alkaline media zoo li saturated alkali kua thiab cement, nws cov khoom tawg ib leeg-filament lub zog khaws cia tus nqi ntau dua $75\%$, qhia tau zoo heev tsis kam rau alkali corrosion. Cov fiber basalt luv luv muaj kev sib raug zoo nrog cov inorganic binders, tus nqi nqus dej qis dua $1\%$, thiab nws cov hygroscopicity tsis hloov pauv raws sijhawm. Qhov no ua pov thawj nws cov khoom ruaj khov zoo, lub neej ntev, thiab kev sib raug zoo ntawm ib puag ncig thaum siv. Tsis tas li ntawd xwb, cov fiber no kuj muaj cov yam ntxwv zoo xws li kev rwb thaiv tsev, kev lim dej kub siab, kev tiv thaiv hluav taws xob, thiab muaj peev xwm xa nthwv dej. Nws cov ntsuas kev ua tau zoo tau qhia nyob rau hauv Rooj 1.

3. Kev Tshawb Fawb Txog Kev Siv Basalt Fiber Luv Luv Hauv Cov Pob Zeb Ua Vaj Tse

Cov pob zeb basalt fiber reinforced concrete luv luv cuam ​​tshuam nrog kev koom ua ke qee qhov ntawm cov fiber basalt luv luv uas txuas ntxiv mus lossis tsis txuas ntxiv mus rau hauv cov pob zeb hauv txoj kev tsim nyog. Thaum tseem khaws cia qhov zoo qub ntawm lub zog compressive ntawm cov pob zeb ua vaj tse, txoj kev no tuaj yeem txhim kho nws qhov zoo heev kev ua siab tawv thiab lub zog tensile, yog li ntawd ua kom cov pob zeb ua kom ruaj khov thiab ntev lub neej ua haujlwm ntawm cov qauv tsim.

Ntxiv rau basalt fiber, cov roj carbon fiber, iav fiber, aramid fiber, thiab lwm tus kuj tau siv los ua cov ntaub ntawv txhawb zog hauv cov pob zeb ua vaj tse. Txawm li cas los xij, kev xyaum mus sij hawm ntev qhia tau hais tias cov ntaub ntawv no muaj teeb meem thaum siv rau hauv cov pob zeb ua vaj tse, ua rau nws nyuaj rau ua kom tau raws li qhov kev thov ntawm kev ua lag luam rau cov pob zeb ua haujlwm siab. Qhov tshwm sim ntawm cov fiber basalt luv luv ua kom tiav qhov sib txawv no hauv cov ntaub ntawv thiab cov txheej txheem, txhawb nqa kev txhim kho cov cuab yeej siv los txhawb nqa thiab txhim kho cov pob zeb. Nws lub luag haujlwm hauv kev txhawb nqa thiab ua kom muaj zog ntawm cov pob zeb feem ntau yog pom tseeb hauv cov hauv qab no:

1. Kev Tiv Thaiv Kev Nchuav Zoo: Vim nws qhov ntau thiab qhov zoo ntawm thaj chaw, Cov fiber basalt luv luv tuaj yeem tiv thaiv cov kab nrib pleb me me, tiv thaiv lawv txoj kev sib txuas thiab kev nthuav dav. Lub caij no, nws kov yeej qhov tsis zoo ntawm lwm cov fibers hluavtaws, xws li qhov ceev tsawg, lub zog tensile tsawg, thiab qis elastic modulus. Nws tsis yooj yim rub tawm thaum lub sijhawm tawg, uas tuaj yeem tiv thaiv kev loj hlob ntawm cov kab nrib pleb me me thiab ncua lub sijhawm tsim cov kab nrib pleb tshiab, cuam ​​tshuam zoo rau kev txhim kho ntawm cov pob zeb permeability thiab kev tiv thaiv khov-thaw.

2. Ua ke High Modulus nrog Kev Yooj Yim Tsim Kho: Cov fiber basalt luv luv tsis yog tsuas yog siv cov txiaj ntsig zoo ib yam li cov hlau fiber lub modulus siab thiab lub zog tensile siab ib leeg-filament los tiv thaiv kev nthuav dav tawg, tab sis kuj zoo kov yeej qhov tsis zoo ntawm cov hlau fiber, xws li yooj yim clumping thaum lub sijhawm sib tov thiab nyuaj nrog kev twj thiab kev tsim kho.

3. Kev sib kis tau zoo thiab kev sib haum xeeb: Ua ib qho silicate-based inorganic fiber, luv luv basalt fiber muaj kev sib raug zoo nrog cov ntaub ntawv cementitious. Nws qhov ceev (kwv yees li 2.63-2.80g/cm23) ze li ntawm cov cement concrete thiab mortar, ua rau muaj kev ua haujlwm zoo. Thaum ntxiv lawm, nws tuaj yeem tawg thoob plaws hauv cov qauv pob zeb.

4. Kev Ruaj Khov Zoo Kawg Nkaus: Cov fiber basalt luv luv uas hloov kho qhov chaw ua rau pom cov yam ntxwv "inert fiber", qhia tau zoo heev tiv taus kub siab, xeb, thiab kev cuam tshuam. Nws tswj tau qhov ruaj khov txawm tias nyob rau hauv qhov kub thiab txias heev thiab muaj zog corrosive, thiab nws tuaj yeem txhim kho qhov kev tiv thaiv deformation ntawm cov cement matrix. Yog li ntawd, nws tuaj yeem hloov kho rau qhov chaw ib puag ncig ntawm kev sib tov pob zeb, nchuav, teeb tsa, thiab cov theem kev pabcuam, zoo heev txhim kho qhov kev ua tau ntev ntawm cov pob zeb ua vaj tse.

Hauv kev xaus, luv luv basalt fiber tuaj yeem txhim kho qhov cuam tshuam ntawm cov pob zeb, txo nws cov brittleness, thiab ua kom nws cov khoom siv kho tshuab zoo dua. Tshwj xeeb, nws ua haujlwm hauv cov qauv pob zeb kom tiv thaiv kev tawg, tiv thaiv kev seepage, txhim kho kev ruaj khov, txhim kho qhov cuam tshuam thiab lub peev xwm tensile, thiab pab txhim kho qhov zoo ntawm qhov chaw.

4. Cov Txheej Txheem Tsim Kho thiab Kev Ceev Faj rau Cov Pob Zeb Basalt Fiber Uas Txiav Luv

4.1 Kub ntawm Kev Tsim Kho

Cov pob zeb basalt fiber luv luv yuav tsum tau tsim ntawm qhov kub ntawm −5∘C thiab 25∘C. Qhov kub uas siab dhau los yog qis dhau yuav ua rau cov khoom sib tov tsis sib xws.

4.2 Kev Tswj Xyuas Zoo ntawm Kev Tsim Kho

Kev tswj xyuas zoo rau kev tsim kho basalt fiber luv luv yuav tsum tsom mus rau kev tshuaj xyuas cov khoom siv raw, qhov tseeb ntawm kev ntsuas, thiab qhov zoo ntawm cov txheej txheem sib tov.

4.2.1 Kev Tsim Qauv Sib Xyaws

Hauv kev tsim kho tiag tiag, Yuav tsum xaiv cov koob tshuaj basalt fiber sib txawv raws li qhov xav tau ntawm qhov project. Txij li thaum cov fiber basalt luv luv nws tus kheej tsis tshua muaj tshuaj lom neeg nrog lwm cov khoom sib xyaw ua ke lossis cov khoom sib xyaw, feem ntau nws cov koob tshuaj tsis hloov pauv cov qauv tsim qauv sib xyaw ua ke thawj. Thaum lub sijhawm tsim kho, qhov zoo ntawm txhua yam khoom siv yuav tsum tau txiav txim siab nruj me ntsis raws li qhov sib piv ntawm kev tsim kho thiab qhov ntau ntawm cov khoom sib xyaw rau ib qho kev sib xyaw. Rooj 2 muab ib qho piv txwv ntawm qhov sib tov zoo tshaj plaws rau cov pob zeb basalt fiber reinforced concrete.

Cov kev sim tau qhia tias kev noj cov fiber ntau dua tsis tas yuav ua rau muaj kev tiv thaiv kab nrib pleb zoo dua. Thaum lub dosage tsis tshaj qhov ntau npaum li cas 1.2kg/m23, lub zog compressive ntawm cov pob zeb ua vaj tse qhia txog qhov sib txawv ntawm kev nce qib thawj zaug ua raws li kev txo qis (qhia txog tus nqi siab tshaj plaws) thaum cov tshuaj fiber ntau ntxiv.

4.2.2 Kev Ua Haujlwm Pub Noj thiab Txoj Kev

Thaum lub sijhawm sib tov, luv luv basalt fiber yuav tsum tau ntxiv tib lub sijhawm nrog cov pob zeb sib xyaw xws li xuab zeb thiab pob zeb. Nws raug pom zoo kom muab cov fiber sib npaug rau hauv cov xuab zeb thiab pob zeb thaum lawv tso, thiab tom qab ntawd ntxiv dej rau kev sib tov ntub.

Cov txheej txheem ntxiv fiber ntau tuaj yeem muab faib ua kev pub mis tes thiab kev pub mis tsis siv neeg:

• Kev Pub Noj Tes: Cov fiber basalt uas hnyav lawm raug ntxiv rau tes tom qab cov pob zeb kub tau muab tso rau hauv lub tshuab sib tov. Txoj kev no yuav tsum siv zog ua haujlwm ntau, kev sib xyaw ua ke qis dua, thiab xav tau kev ncua sijhawm sib tov kom tsim nyog kom ntseeg tau tias cov fiber sib xyaw ua ke.

• Tsis Siv Neeg Pub Noj: Ib qho tsis siv neeg basalt fiber lub tshuab dosing siv rau kev ntsuas tsis siv neeg thiab ntxiv tib lub sijhawm nrog lub tshuab sib tov cov khoom kub. Lub tshuab fiber ntau feem ntau yog nruab nrog kev ntsuas tsis siv neeg, ua ntej kev tawg, thiab cov txheej txheem xa khoom pneumatic, muab cov txiaj ntsig ntawm kev yooj yim, ceev, thiab ntxiv qhov tseeb. Yuav tsum xaiv txoj kev tsim nyog raws li cov xwm txheej ntawm kev tsim kho.

4.2.3 Kev Kho Kom Slow

Qhov ntxiv ntawm cov fiber me ntsis ua rau cov viscosity ntawm cov sib tov ua vaj tse nce ntxiv, uas cuam tshuam rau qhov poob qis. Yog tias qhov kev poob qis tsis ua raws li cov kev cai tsim kho, yuav tsum tau siv cov tshuaj plasticizer lossis cov neeg sawv cev txo dej rau kev kho kom haum. Qhov teeb meem yuav tsum tsis txhob daws los ntawm kev ua kom cov dej ntau ntxiv.

4.2.4 Kev Tsim thiab Kho

Tsis muaj qhov yuav tsum tau tshwj xeeb rau kev tsim cov pob zeb sib xyaw nrog cov fiber basalt luv luv, tab sis yuav tsum muaj kev co thiab kev sib zog txaus. Nws cov kev cai kho kom zoo ib yam li cov rau cov pob zeb ib txwm muaj.

Cov Ntaub Ntawv Thov Luv Luv ntawm Basalt Fiber Concrete Luv-Cut

Txoj Kev Loj Jing-Zhu (Anyang mus rau Xinxiang) yog txoj kev loj hauv tebchaws thiab yog ib feem tseem ceeb ntawm Henan Province txoj kev loj. Vim yog qhov av puv nkaus thiab cov av tsis zoo hauv seem no, kev sib tsoo tsis sib xws thiab lwm yam tsis zoo tau tshwm sim sai tom qab nws qhib. Nyob rau hauv xyoo tas los no, nrog rau qhov nce ntxiv ntawm cov tsheb khiav thiab kev nce ntxiv ntawm cov tsheb thauj khoom ntau dhau, txoj kev taug kev tau raug kev txom nyem ntau zaus los ntawm ntau yam kev tsis zoo xws li cov kab nrib pleb ntev thiab kab rov tav, cov qhov, kev sib hais haum, kev tawg ntawm lub grid, thiab kev tawg ntawm tus qav. Qhov no tsis yog tsuas yog ua rau muaj kev phom sij rau kev tsav tsheb xwb tab sis kuj ua rau muaj teeb meem loj rau kev saib xyuas txhua hnub. Tsis tas li ntawd xwb, tus qauv plaub txoj kab qub tau ua tsis tau raws li qhov xav tau kev thauj mus los ntev lawm, xav tau kev nthuav dav thiab kev tsim kho dua tshiab.

Cov pob zeb basalt fiber luv luv tau siv rau hauv qhov kev txhaws subgrade ntawm qhov project no. Kev xyaum tau qhia tias nws lub zog tensile tau nce ntxiv ntau dua $30\%$, nws txoj kev tiv taus qaug zog tau zoo dua los ntawm ntau dua $30\%$, thiab nws txoj kev tiv thaiv rutting tau nce ntxiv los ntawm ntau dua $300\%$. Nws tau pom tias muaj txiaj ntsig zoo hauv kev tiv thaiv cov kab nrib pleb ntev, inhibiting qhov kev nthuav dav ntawm cov kab nrib pleb, thiab txuas ntxiv lub neej kev pabcuam ntawm txoj kev.

Nrog nws cov khoom siv kho tshuab tshwj xeeb, kev ruaj khov zoo heev, thiab kev siv nyiaj tsim nyog, luv luv basalt fiber tau dhau los ua cov khoom siv txhim kho pob zeb zoo. Cov kev cia siab ntawm daim ntawv thov rau cov pob zeb basalt fiber luv luv yog dav heev. Nws cov txiaj ntsig zoo hauv kev txhim kho kev ua haujlwm engineering thiab txuas ntxiv lub neej kev pabcuam yuav tsum tau txais txiaj ntsig zoo rau kev lag luam thiab kev sib raug zoo, tso nws ua ib qho khoom siv tseem ceeb hauv kev tsim kho vaj tse yav tom ntej.