Ibikoresho bya tekinike hamwe no kunanirwa Uburyo bwa Fibre-Bishimangiwe na beto: Ingaruka zubwoko bwa fibre nibirimo

Beto niyo ikoreshwa cyane Ubwubatsi ibikoresho. Itanga ibyiza byinshi, harimo kuboneka kwinshi, uburyo bworoshye bwo gukora, igiciro gito, no koroshya porogaramu. Ikoreshwa cyane mubice bitandukanye nk'inyubako, imihanda, ibiraro, tunel, hamwe na hydraulic engineering. Nkuko umubare munini wimishinga yubuhanga wateye imbere, ibisabwa kumikorere ya beto nabyo byiyongereye buhoro buhoro. Kubera iyo mpamvu, ibitagenda neza bya beto gakondo, nkimbaraga zidahagije, imbaraga zidahwitse, hamwe nihungabana ryinshi, byagaragaye. Kubwibyo, kunoza imikorere ya beto yamye nimwe mubyerekezo byingenzi byubushakashatsi mubikorwa byubwubatsi.

Kugirango uzamure imikorere ya beto, fibre yongeweho kugirango itezimbere imiterere yubukanishi no gukomera. Ingero zirimo Fibres (SF), fibre synthique (nka fibre polypropilene), fibre minerval (nka fibre basalt - BF), na fibre karubone (CF). Ubu buryo bwarushijeho kuzamura imikorere ya beto ikora cyane (HPC) na ultra-high performance beto (UHPC).

Fibre irashobora, kurwego runaka, kunoza imiterere ya beto. Nyamara, ubwoko butandukanye bwa fibre nibirimo byanze bikunze biganisha ku guhinduka gukomeye kwingaruka zabyo kumiterere ya mashini. Kugeza ubu, ibintu byiza bya fibre nziza, isano iri hagati yimiterere yimiterere nubukanishi, hamwe nuburyo bwibanze bwa fibre-fer-beto iracyasaba ibindi bisobanuro. Ubu bushakashatsi bwakoze iperereza kuri fibre ya karubone (CF), fibre (BF), hamwe na fibre fibre (SF) nkibintu byubushakashatsi, gutegura ingero zifatika zirimo ibintu bitandukanye bya fibre. Izi fibre zatoranijwe kubera inyandiko zanditse neza zongerewe imbaraga mubikorwa bifatika kandi byashyizwe mubikorwa. Binyuze mu bushakashatsi bwahinduwe bugenzurwa, ingaruka zubwoko bwa fibre nibirimo ku mbaraga zo guhonyora, moderi ya elastike, nuburyo bwo kunanirwa bwa beto byasesenguwe kuri gahunda. Gukomatanya ishusho ya digitale hamwe na scanning electron microscopie (SEM) tekinike yisesengura, imyitwarire yubwihindurize ya fibre-fonction beto mugihe cyubushakashatsi yagaragaye, biganisha kumyanzuro ikurikira:

1. Ugereranije na beto isanzwe (PC), kwinjiza fibre y'ibyuma (SF), fibre karubone (CF), na fibre (BF) yazamuye cyane imiterere yubukorikori bwa fibre-fer-beto (FRC) kandi ihindura uburyo bwo kunanirwa. Izi fibre zahinduye comptabilite ya beto nibiranga pore compression iranga. Mugihe fibre yariyongereye, uburyo bwo kunanirwa bwahindutse buva kuri buke bugabanuka. Ingingo y'inzibacyuho ikomeye yari 0.5% kuri fibre fibre (SFC) na 1.0% kuri beto fibre fibre (CFC) na beto ya fibre ya basalt (BFC). Kugira ngo imikorere yubukorikori irusheho kuba myiza, ibintu byiza kuri fibre fibre byari 2.0%, kuri fibre ya karubone 1.0%, naho fibre ya basalt 0.5%.

2.Nubwo ibirimo fibre bishobora guteza imbere ubwuzuzanye nubushobozi bwa beto, ibintu birenze urugero birashobora gutuma habaho "kwiyuzuzamo", bigatera fibre "agglomeration." Ibi bigira ingaruka mbi kumiterere ya beto, imbaraga, nibiranga deformasiyo. Ibyuma bya fibre ya beto byageze kumikorere myiza kuri fibre yubunini bwa 2.0%, mugihe beto ya fibre fibre na basalt fibre beto yageze kubikorwa byiza kuri 1.0% na 0.5%. Hejuru yibi bintu byiza, imikorere yagabanutse.

3.Isesengura rya Electron Microscopy (SEM) ryerekanye ko isano iri hagati ya fibre na materique ya sima itagira ingaruka zikomeye kumiterere ya macroscopique yubukorikori bwa beto. Umubare ukwiye wa fibre ugizwe nurusobe rwibice bitatu-byimiterere y'urusobekerane muri beto, bizamura matrike ihuza nibikorwa rusange. Nyamara, ibintu byinshi birenze urugero bya fibre biganisha kuri fibre agglomeration, bigatera uturere duto duto kandi bigabanya ubukana bwa beto n'imbaraga. Impinduka muri microstructure zahujwe cyane nihindagurika ryimiterere ya macroscopique.

4. Kwiyongera kwa fibre byahinduye cyane uburyo bwo kunanirwa kwa beto. Ugereranije na beto isanzwe, fibre-fer-beto yerekanaga ubunyangamugayo nyuma yo gutsindwa, hamwe nuduce duto kandi duto, hamwe no gukomera. Ibyuma byibyuma byagize akamaro cyane mukubuza gucika, bikurikirwa na fibre ya karubone na fibre ya basalt. "Ingaruka yikiraro" ya fibre yagize uruhare runini muguhashya ikwirakwizwa ryayo, mugihe "intege nke zintera" zagize ingaruka mbi kumiterere yubukanishi.