Kukhathamiritsa Kwantchito ndi Kafukufuku wa Ntchito Zaumisiri wa Short-Cut Basalt Fiber-Reinforced Concrete

Mzaka zaposachedwa,China Highway engineering Zomangamanga zakula mwachangu, ndi ukadaulo wa konkriti wapita patsogolo kwambiri, kusonkhanitsa zopambana zambiri zapamwamba komanso zokhwima zaukadaulo. Mapangidwe a konkriti amagwiritsidwa ntchito kwambiri pantchito yomanga zomangamanga, kusonyeza kufunika kwake. Komabe, pamodzi ndi zopambana izi, vuto la kusweka konkire akukhala otchuka kwambiri. Kukhalapo kwa ming'alu kumasokoneza magwiridwe antchito a konkriti, kwambiri kuchepetsa ake kulimba kwamakokedwe, ndicho chifukwa chachikulu cha kulephera kwamphamvu komwe kumawonetsedwa ndi konkriti. Chingwe chachifupi cha basalt, ngati chinthu chatsopano cha fiber, chakhala chinthu chabwino kwambiri cholimbikitsira konkriti chifukwa cha mawonekedwe ake apadera amakina, kukhazikika bwino, ndi zotsika mtengo.Nkhaniyi ifotokoza za makhalidwe a shortcut Basalt Fiber ndikuwunika momwe ntchito yake ikugwiritsidwira ntchito pakulimbitsa konkire ndi kulimbikitsa.

2. Katundu wa Short-Cut Basalt Fiber

2.1 Tanthauzo

basalt fiber ndi organic mchere CHIKWANGWANI kuti kukonzedwa ndi kudula mosalekeza basalt CHIKWANGWANI mu utali pafupifupi zosakwana $50\text{mm}$. Ikhoza kugawidwa mofanana mkati mwa konkire. Malinga ndi ntchito yake, akhoza kugawidwa makamaka m'magulu: anti-cracking fiber kwa konkriti ($\text{BF}$), kulimbitsa ndi kulimbikitsa ulusi wa konkriti ($\text{BZ}$), ndi anti-cracking fiber kwa matope ($\text{BSF}$), mwa ena.

2.2 Kuchita kwa Short-Dulani Basalt Fiber

Njira yachidule basalt fiber ali ndi makhalidwe abwino kwambiri a mphamvu yapamwamba ndi mkulu modula. Mphamvu zake zolimba zimatha kufikira $1050\text{-}1250\text{MPa}$, ndi zotanuka modulus ake si zochepa kuposa $34\text{GPA}$. Zake kukana kutentha kwambiri ndizabwino kwambiri, kulola kuti ntchito mosalekeza mkati osiyanasiyana kutentha osiyanasiyana −269∘C ku 650∘C. Imawonetsa kwambiri kukana dzimbiri ndi kukhazikika kwamankhwala muzinthu zowononga monga ma acid, alkali, ndi mchere. Makamaka muzofalitsa zamchere monga njira ya alkali yodzaza ndi simenti, mphamvu yake yosungira mphamvu ya filament imodzi ndi yaikulu kuposa $75\%$, kusonyeza kukana kwabwino kwa dzimbiri la alkali. Chingwe chachifupi cha basalt ali kuyanjana kwabwino ndi ma inorganic binders, mayamwidwe a chinyontho otsika kuposa $1\%$, ndipo hygroscopicity yake sikusintha pakapita nthawi. Izi zikutsimikizira kukhazikika kwake kwakuthupi, moyo wautali, ndi kuyanjana kwa chilengedwe panthawi yogwiritsira ntchito. Komanso, CHIKWANGWANI ichi chilinso ndi mikhalidwe yabwino kwambiri monga kutchinjiriza, kusefa kwapamwamba kwambiri, kukana ma radiation, ndi mphamvu yotumiza mafunde. Zotsatira zake zikuwonetsedwa mu Table 1.

3. Kagwiritsidwe Ntchito ka Short-Cut Basalt Fiber mu Konkire

Short-cut basalt ulusi wolimbitsa konkire kumaphatikizapo kuphatikizira ulusi wina wa basalt wokhazikika kapena wosalekeza mu konkire m'njira yoyenera. Ndikukhalabe ndi mwayi woyambira wa mphamvu ya konkriti, njira imeneyi akhoza kwambiri kusintha ake kulimba ndi kulimba kwamakokedwe, potero kulimbikitsa ndi kulimbikitsa konkire ndikukulitsa moyo wautumiki wa zomangamanga.

Kuphatikiza pa basalt fiber, carbon fiber, galasi fiber, fiber aramid, ndi zina zakhala zikugwiritsidwanso ntchito ngati zida zolimbikitsira mu konkriti. Komabe, machitidwe a nthawi yayitali akuwonetsa kuti zinthuzi zimapereka zovuta zina zikagwiritsidwa ntchito pa konkriti, kupangitsa kuti zikhale zovuta kukwaniritsa kufunikira kwa msika kwa konkire yogwira ntchito kwambiri. Kutuluka kwachidule cha basalt fiber kumadzaza kusiyana kwazinthu ndi njira, kulimbikitsa kwambiri chitukuko cha teknoloji yolimbitsa konkire ndi kulimbikitsa. Udindo wake pakulimbitsa konkriti ndi kulimbikitsa kumawonekera makamaka pazinthu izi:

1. Kugwiritsa Ntchito Crack Inhibition: Chifukwa cha kuchuluka kwake komanso ubwino wake pamtunda, Chingwe chachifupi cha basalt chimatha kuletsa ming'alu yaying'ono, kulepheretsa kulumikizana kwawo ndi kufalikira. Pakadali pano, imathetsa kuipa kwa ulusi wina wopangidwa, monga low density, kutsika kwamphamvu kwamphamvu, ndi low elastic modulus. Simang'ambika mosavuta panthawi yofalitsa ming'alu, zomwe zingalepheretse kwambiri kukula kwa ming'alu yaying'ono ndikuchedwetsa kubadwa kwa ming'alu yatsopano, kukhudza kuwongolera kokwanira kwa konkriti ndi kukana kuzizira kwachisanu.

2. Amaphatikiza High Modulus ndi Kusavuta Kumanga: Ulusi wodula wa basalt sikuti umangowonjezera ubwino wofanana ndi chitsulo chokwera modulus komanso mphamvu yamphamvu ya single-filament kuti ilepheretsa kukula kwa mng'alu, komanso amagonjetsa zovuta zazitsulo zachitsulo, monga kugwetsa kosavuta panthawi yosakaniza ndi kuvutika ndi kupopera ndi kumanga.

3. Dispersibility Zabwino ndi Kugwirizana: Monga silicate-based inorganic fiber, Short-cut basalt fiber imagwirizana mwachilengedwe ndi zida za simenti. Kuchuluka kwake (approx. 2.63-2.80g/cm3) ili pafupi ndi konkire ya simenti ndi matope; zimagwira ntchito bwino. Akangowonjezera, imatha kumwazikana mofanana mu dongosolo lonse la konkire.

4. Kukhalitsa Kwabwino Kwambiri: Ulusi wosinthika wamtundu wa basalt wosinthidwa pamwamba umawonetsa mawonekedwe a "inert fiber", kuwonetsa kukana kwambiri kutentha kwambiri, dzimbiri, ndi zotsatira. Imasunga bata ngakhale m'malo otentha komanso owononga kwambiri, ndipo imatha kukulitsa kukana kwa ma deformation a matrix a simenti. Chifukwa chake, imatha kusinthira kumadera ovuta a kusakaniza konkire, kuthira, kukhazikitsa, ndi magawo a utumiki, bwino kwambiri kukhazikika wa konkriti.

Powombetsa mkota, Short-cut basalt fiber imatha kusintha bwino kukana konkriti, kuchepetsa brittleness yake, ndi kuonjezera mphamvu zake zamakina. Makamaka, imagwira ntchito m'mapangidwe a konkriti kuti aletse kusweka, kuletsa kusefukira, kuwonjezera durability, onjezerani mphamvu ndi mphamvu yamanjenje, ndikuthandizira kukweza pamwamba.

4. Njira Zomangamanga ndi Kusamala kwa Short-Cut Basalt Fiber Concrete

4.1 Kutentha kwa zomangamanga

Chofupikitsa konkriti ya basalt fiber iyenera kumangidwa pa kutentha pakati −5∘C ndi 25∘C. Kutentha kwambiri kapena kutsika kwambiri kungayambitse kusafanana kwa kusakaniza.

4.2 Kuwongolera Ubwino Womanga

Kuwongolera kwapamwamba kwa zomangamanga za konkriti za basalt fiber ziyenera kuyang'ana pakuwunika kwazinthu zopangira, kulondola kwa mita, ndi ubwino wa ndondomeko yosakaniza.

4.2.1 Mix Proportion Design

Pomanga kwenikweni, Mlingo wocheperako wa basalt fiber uyenera kusankhidwa molingana ndi zomwe polojekiti ikufuna. Popeza ulusi wamfupi wa basalt wokhawokha sugwirizana ndi zinthu zina za konkriti kapena zophatikizika, Mlingo wake nthawi zambiri susintha mfundo zoyambirira zosakanikirana ndi konkriti. Panthawi yomanga, ubwino wa zipangizo zonse ayenera mosamalitsa anatsimikiza molingana ndi zomangamanga mix kuchuluka ndi kuchuluka kwa mtanda kusakaniza kumodzi. Table 2 imapereka chitsanzo cha kusakaniza koyenera kwa konkire yolimba ya basalt fiber.

Mayesero awonetsa kuti mulingo wapamwamba wa fiber sikutanthauza kukana kwabwinoko kwa crack. Pamene mlingo si upambana 1.2kg/m3, mphamvu yopondereza ya konkire ikuwonetsa kachitidwe kakuwonjezeka koyambirira kotsatiridwa ndi kuchepa (kuwonetsa mtengo wapamwamba) pamene mlingo wa fiber ukuwonjezeka.

4.2.2 Kadyetsedwe ndi Njira

Panthawi yosakaniza, ulusi wodula wa basalt ziyenera kuwonjezeredwa nthawi imodzi ndi zophatikizira monga mchenga ndi miyala. Ndikofunikira kuwaza ulusiwo mofanana mumchenga ndi mwala pakuyika kwawo, kenako onjezerani madzi kusakaniza konyowa.

Njira zowonjezera fiber zitha kugawidwa m'madyerero amanja komanso odzipangira okha:

• Kudyetsa Pamanja: Chingwe choyezera cha basalt chimawonjezedwa pamanja pambuyo poti chowotchacho chikayikidwa mu chosakanizira. Njira iyi imaphatikizapo kuchuluka kwa ntchito, kusakanikirana kocheperako kofanana, ndipo imafuna kuwonjezereka koyenera kwa nthawi yosakaniza kuti zitsimikizire kuti yunifolomu ya fiber ibalalika.

• Kudyetsa Zokha: A automatic basalt fiber Dosing makina ntchito yodzichitira metering ndi kuwonjezera munthawi yomweyo ndi chosakanizira otentha aggregate. Makina a fiber dosing nthawi zambiri amakhala ndi metering yokha, kubalalika kale, ndi njira zotumizira ma pneumatic, zopatsa thanzi labwino, kudya, ndi kuwonjezera kolondola. Njira yoyenera iyenera kusankhidwa malingana ndi momwe zomangamanga zimakhalira.

4.2.3 Kusintha kwa Slump

Kuphatikiza kwa fiber pang'ono kumawonjezera kukhuthala kwa konkriti, zomwe zimakhudza kuchepa. Ngati kugwa sikukukwaniritsa zofunikira zomanga, pulasitiki kapena wothandizira kuchepetsa madzi ayenera kugwiritsidwa ntchito mwapadera kuti asinthe. Nkhaniyo siyenera kuthetsedwa powonjezera madzi.

4.2.4 Kupanga ndi Kuchiritsa

Palibe zofunikira zapadera pakupanga konkriti wosakanizidwa ndi ulusi wodulidwa wa basalt, koma kugwedezeka kokwanira ndi kuphatikizika kuyenera kutsimikizika. Zofunikira zake zochiritsa ndizofanana ndi za konkriti wamba.

Mlandu Wachidule Wogwiritsa Ntchito Mwachidule Wa Basalt Fiber Concrete

Msewu wa Jing-Zhu Expressway (gawo la Anyang mpaka Xinxiang) ndi nsewu waukulu wadziko lonse komanso gawo lofunikira pamayendedwe apamsewu a Henan Province. Chifukwa cha kuchuluka kwa minga ndi kutsika bwino kwa nthaka m'gawoli, subgrade kukhazikika kosagwirizana ndi zolakwika zina zidawonekera atangotsegulidwa. Mzaka zaposachedwa, ndi kuchuluka kwa magalimoto ndi kuchuluka kwa magalimoto odzaza, msewuwo wakhala ukuvutika mobwerezabwereza ndi zolakwika zosiyanasiyana monga ming'alu yayitali komanso yopingasa, maenje, kuthetsa, kuwonongeka kwa gridi, ndi kusweka kwa alligator. Izi sizimangowopseza kwambiri chitetezo chagalimoto komanso zimakhala zovuta pakukonza tsiku ndi tsiku. Komanso, kapangidwe koyambirira kanjira zinayi kakanika kukwaniritsa zofuna zamayendedwe, kufunikira kukulitsidwa ndi kumangidwanso.

Short-cut basalt fiber konkire idagwiritsidwa ntchito podzaza kalasi yantchitoyi. Zochita zawonetsa kuti mphamvu zake zolimba zidawonjezeka mopitilira $30\%$, kukana kutopa kwake kunakula kwambiri $30\%$, ndipo kulimbana kwake kwamphamvu kumawonjezeka pang'onopang'ono $300\%$. Zawonetsa bwino kwambiri popewa ming'alu yautali, kuchepetsa kuchuluka kwa shuga m'magazi, ndi kukulitsa moyo wautumiki wapanjira.

Ndi mawonekedwe ake apadera amakina, kukhazikika kwabwino, komanso kutsika mtengo kwambiri, Short-cut basalt fiber wakhala chinthu cholimbikitsira konkriti. Chiyembekezo chogwiritsira ntchito konkire ya basalt fiber konkire ndi yotakata kwambiri. Ubwino wake wofunikira pakupititsa patsogolo ntchito zauinjiniya ndikukulitsa moyo wautumiki ukuyembekezeka kubweretsa zabwino zachuma ndi chikhalidwe cha anthu, kuyiyika ngati chinthu chofunikira chomangira m'gawo la zomangamanga m'tsogolomu.