Konkriti yachitsulo yolimbika (sfrc) ndi mtundu watsopano wazinthu zophatikizira zomwe zitha kutsanulidwa ndikuwathira ndikuwonjezera firiji yoyenera kukhala konkire wamba. Zakhala zikukula mwachangu kunyumba ndi kumayiko ena posachedwa. Zimakhudza zolakwa zamphamvu zotsika kwambiri, zazing'ono kwambiri komanso zopanda pake za konkriti. Ili ndi chinthu chabwino kwambiri monga mphamvu ya tunsile, kukwiya, kukwiya, kukana, kukana kutopa komanso kulimba mtima. Zagwiritsidwa ntchito mu hydraulic Engineering, Road ndi Bridge, zomanga ndi minda ina yamisiri.
1. Kukula kwa konkriti yolimbikitsidwa
Chovala chimalimbikitsidwa konkriti (FRC) ndiye chidule cha konkriti yolimbikitsira. Nthawi zambiri imakhala yopanga simenti yopangidwa ndi phala la simenti, matope kapena konkriti ndi fiber, fiber firtic olimbikitsidwa. Ndiwo nyumba yatsopano yopangidwa ndi kufalikira kofananira ndi nyonga yabwino ndi mphamvu yayikulu yowoneka bwino kwambiri, kutalika kwambiri komanso kukana kwa alkali ku matrix. Fidend mu konkriti imatha kuchepetsa m'badwo wa ming'alu yoyambirira ku konkriti ndi kukuwonjezeranso ming'alu yopangidwa ndi mphamvu yakunja, molimbika kufooka konkriti, ndikuwongolera magwiridwe antchito Zopanda ungwiro, madzi oyenda, kukana chisanu ndikuteteza chitetezo cha konkriti. Chovala chimalimbikitsidwa konkriti, makamaka konkriti zolimbikitsira zolimbikitsira zolimbikitsira, zakopa chidwi kwambiri ndi madera ophunzirira ndi ukadaulo mu upangiri wothandiza chifukwa chochita bwino kwambiri. 1907 Sheviet Katswiri B п. Hekpocabu anayamba kugwiritsa ntchito konkriti yachitsulo yolimbikitsira; Mu 1910, HF Porter adasindikiza lipoti lofufuzira pa konkriti lalifupi lolimbikitsidwa, akuwonetsa kuti ulusi wachidule uyenera kuphatikizidwa monkriti ku matrix; Mu 1911, Graham wa United States adawonjezera chibereketse chachitsulo kukhala konkriti wamba kuti chikhale cholimba kuti chikhale cholimba. Pofika m'ma 1940, United States, Britain, France, Germany, Japan ndi mayiko ena adachita katerize katenthedwe konkire, ndikusintha kwa mawonekedwe a chitsulo chokhazikika kuti akonze mphamvu yolumikizana pakati pa fiber ndi konkriti ku ma cell; Mu 1963, Jp Romoldki ndi GB Oatson adasindikiza pepala la chitukuko cha konkriti, ndikuwonetsa kuti konkriti yolimbikitsidwa yolimbikitsidwa ndi ulusi wa chitsulo omwe amagwira ntchito yothandiza Kupsinjika Kwakukulu (chiphunzitso cha fibeki), ndikuyambitsa chitukuko chazinthu zatsopanozi. Kufikira tsopano, ndi kutchuka ndi konkriti kwa konkriti yolimbikitsira, chifukwa cha magawo anayi a ulusi olimbikitsidwa, konkriti zolimbikitsira zitsulo zolimbikitsidwa, zitsulo zowoneka bwino zolimbika Kopenga konkriti.
2. Kulimbitsa mphamvu kwa konkriti yolimbikitsidwa
(1) Makina amakanema. Chiphunzitso chamakina ophatikizika chimakhazikitsidwa pa chiphunzitso cha ma cooffouning opitirira zojambula ndi kuphatikiza ndi zikhalidwe zogawika za ulusi wachitsulo ku konkriti. Mu lingaliro ili, gulu limawonedwa ngati gawo la magawo awiri ndi fiber ngati gawo limodzi ndi matrix ena.
(2) chiphunzitso chakuti chiphunzitso cha fiber. Chiphunzitso chakumacha, chomwe chimadziwika kuti chiphunzitso chakunjana, chikupangitsani kutengera makina otakata zamiyala. Chiphunzitso ichi chimakhala chomwe chikhazikitso cha ulusi amangokhudzana ndi fiberi yofananira (yofiyira).
3. Kusanthula pa mawonekedwe a konkriti yolimbikitsidwa
Konkriti yolimbikitsira mabelani 1.Creave. Konkriti yolimbikitsira yolimbika ndi mtundu wa yunifolomu ndi sikiti yotsimikizika yopangidwa ndikuwonjezera chitsulo chochepa cha kaboni, chitsulo chosapanga dzimbiri ndi chotsatsa. Kusakaniza kwa chitsamba chachitsulo chimakhala 1% ~ 2% ~ 2% ~ 2% ya voliyumu, pomwe 70 ~ fibeli chitsulo chilichonse chimasakanizidwa muyeso uliwonse wa konkriti. Kutalika kwa chitsamba chachitsulo kuyenera kukhala 25 ~ 60mm, m'mimba mwake kuyenera kukhala 0,25 ~ 100m, 700. Poyerekeza , kuvala komanso kukana kukana, komanso kulimbikitsa kwakukulu ndikulimbana ndi konkriti konkriti, ndikusintha kutopa komanso kulimba kwa Kapangidwe kake, makamaka kulimba kumatha kuwonjezeka ndi 10 ~ 20 kawiri. Makina othandizira ma finibele olimbikitsidwa ndi konkriti wamba amayerekezedwa ku China. Ngati zomwe zili ndi chiberekero cha 15% ~ 20% ndipo kuchuluka kwa simenti ya madzi ndi 0,45, mphamvu ya anthu 70%, mphamvu yosinthika imawonjezeka ndi 10 ~ 20 Nthawi zake, kutopa kwamphamvu kumawonjezeka ndi 15 ~ 20. 20, kuvuta kosasinthika kwa 14 ~ 20, ndipo kuvala kukana kumawonjezereka kumachitikanso kwambiri. Chifukwa chake, konkriti yolimbikitsidwa yolimbikitsidwa imakhala ndi mphamvu zabwino komanso zamakina kuposa konkriti momveka bwino.
4..
Zambiri zofufuzira zikuwonetsa kuti chitsamba chachitsulo sichimalimbikitsa kwambiri mphamvu yomukhumudwitsa ya konkriti, kapenanso kuchepetsa; Poyerekeza ndi konkriti yomveka, pali chabwino (kuchuluka ndikuchepetsa) kapena kuvala kwapakatikati pazenera zolimbikitsira zolimbikitsira komanso kupewa kwa pulasitiki koyambirira kwa konkriti. Kuphatikiza apo, konkriti yachitsulo yolimbikitsira yolimbikitsidwa imakhala ndi mavuto, monga mlingo waukulu, mtengo wapamwamba, dzimbiri komanso pafupifupi kukana kuphulitsa ndi moto, womwe wakhudzanso ntchito yosiyanasiyana. M'zaka zaposachedwa, akatswiri ena apakhomo komanso achilendo adayamba kumvetsera kwa Ciber Cyrete (HFRC), kuyesera kusakaniza kuphatikizika wina ndi mnzake, ndikumacheza ndi " Kuyika magawo kuti apititse katundu zosiyanasiyana kwa konkriti, kuti akwaniritse zosowa zosiyanasiyana. Komabe, pankhani ya mphamvu zake zosiyanasiyana, makamaka kuwonongeka kwake komanso kuwonongeka kwa chitukuko, malo osokoneza bongo okhala ndi katundu wokhazikika, kuchuluka kosiyanasiyana komanso kusakaniza kokhazikika kwa fiber, ubale pakati pa zigawo za zinthu zophatikizika, kulimbikitsa Mphamvu ndi Kulimbitsa Mphamvu, Makina Otsatsa A Anti, Kulephera Maukadaulo, Maukadaulo Omanga, Mavuto Ogawa kapangidwe kofunikira kuti muphunzirenso.
5.
Chovala cha finyonti chitsimikiziro sichosavuta kusakaniza, kuchuluka kwa fiber ndi lalikulu, ndipo mtengo wake umakhala wokwera kwambiri, womwe umakhudza ntchito imodzi. Kudzera mwa kufufuza kwaukadaulo ndi kafukufuku wophunzirira, mtundu watsopano wa kapangidwe ka chitsulo, mawonekedwe a chitsulo chokhazikika konkriti (LSFRC), afunsidwa. Chitsamba chochepa chimagawidwa kwambiri pamtunda wapamwamba komanso wotsika pamsewu slab, ndipo mkati mwake kali ndi konkriti. Chitsamba chachitsulo ku Lsfrc nthawi zambiri chimafalitsidwa pamanja kapena mwamagetsi. Chitsamba chachitsulo chiri ndi nthawi yayitali, ndipo kutalika kwa magawo kutalika kumakhala pakati pa 70 ~ 120, kuwonetsa magawo awiri. Popanda kukhudza mphamvu zamakina, izi sizimachepetsa kuchuluka kwa chiberekero chachitsulo, komanso chimapewa chodabwitsa cha konkriti yolumikizira mafashoni owirikiza. Kuphatikiza apo, malo a chitsulo chokhazikika ku Concete wa ku Concenti amakhudza kwambiri mphamvu yothana ndi konkire. Mphamvu yolimbikitsidwa ndi chitsamba cha chitsulo pansi pa konkriti ndiye yabwino kwambiri. Ndi udindo wa chitsamba cha chitsulo chosasunthika, zolimbitsa mphamvu zimatsika kwambiri. Mphamvu yothamangitsa lsfrc ndi yoposa 35% kuposa kuphatikizira konkriti yomwe imasakaniza yomweyo, yomwe ili yotsika pang'ono pokha pomwe yolumikizira ma fiber. Komabe, LSFRC imatha kusunga mtengo wambiri, ndipo palibe vuto kusakanikirana. Chifukwa chake, lsfrc ndi nkhani yatsopano yokhala ndi phindu labwino komanso zopindulitsa kwachuma komanso zofunika kugwiritsa ntchito bwino, zomwe ndizoyenera kutchuka ndi kugwiritsa ntchito panjira pomanga.
6. Wosakanizidwa konkire
Chosanjikiza scrid fiber olimbikitsidwa konkriti (LHFRC) ndi chophatikizika chowonjezera 0.1% Polyprophene Firber Phirry Chovala kofiira ndi konkriti yowoneka bwino pakati. Itha kuthana ndi kufooka kwa LSFRC Internent Center Center ndikuletsa zoopsa zomwe zingachitike ngati chiberekero chachitsulo chitatha. Lhfrc imatha kukulitsa mphamvu ya kunkriti yothana ndi konkire. Poyerekeza ndi konkriti yomveka bwino, mphamvu yake yotheratu imachulukitsidwa pafupifupi 20%, ndipo poyerekeza ndi LSFR, mphamvu yake yotheratu imachulukitsa ndi 2.6%, koma imathandizira pang'ono moto wa simenti ya konkriti. Wosasinthika modulu wa LHFRC ndi 1.3% kuposa momwe ma crentete momveka bwino ndi 0,3% kuposa a LSFRC. LHFRC imathanso kuthandizira kwambiri kusinthika kwa konkriti, ndipo njira yake yosinthira imatha nthawi 8 yomwe ya ma crentete pompopompo komanso nthawi ya LSFRC. Komanso, chifukwa chogwirira ntchito mosiyanasiyana mu ngfrc mu konkriti, malinga ndi zosowa zaukadaulo, zbrid yolimba ya fiber ndi mbindo lokhala ndi chitsulo , kuwononga mphamvu ya zinthu zambiri komanso kuchuluka kwa zinthuzo, kusintha mtundu wa zinthu zakuthupi ndikuthandizira moyo wa zinthuzo.
- Zomanga (Shanxi, Vol Vol. 38, No. 11, Chen Huing)
Post Nthawi: Aug-24-2022