1. Steel Fiber Reinforced Concrete
A dịghị nke ígwè eriri ụdị dị ka nkwado.A na-emepụta eriri nchara gburugburu nke a na-ejikarị eme ihe site n'ịbelata waya n'ogologo ogologo.A na-ahụkarị dayameta dị n'etiti 0.25 ruo 0.75mm.A na-emepụta eriri igwe nwere c/s akụkụ anọ site n'ime ka mpempe akwụkwọ dị ihe dịka 0.25mm siri ike.
Fiber mere site na obere igwe adọkpụrụ akpụ.Na-eme ka IS: 280-1976 na dayameta nke waya dị iche site na 0.3 ruo 0.5mm ejirila ya mee ihe na India.
A na-emepụta eriri nchara gburugburu site na ịcha ma ọ bụ gbutu waya, eriri mpempe akwụkwọ dị larịị nwere ụdị c / s nke sitere na 0.15 ruo 0.41mm na ọkpụrụkpụ na 0.25 ruo 0.90mm n'obosara na-emepụta site na silting flat.
A na-enwekwa eriri ahụ mebiri emebi, nke a na-ekekọta ya na gluu na-edozi mmiri n'ụdị ngwugwu.Ebe ọ bụ na eriri onye ọ bụla na-agbakọta ọnụ, nkesa otu ha na matriks na-esikarị ike.Enwere ike zere nke a site n'ịgbakwunye eriri eriri, nke na-ekewa n'oge usoro ngwakọta.
2. Polypropylene Fiber Reinforced (PFR) ngwa ngwa ciment na ihe
Polypropylene bụ otu n'ime ndị dị ọnụ ala & nke ukwuu dị na polymers polypropylene fibers na-eguzogide ọgwụ na ọtụtụ kemịkalụ & ọ ga-abụ cementity matriks nke ga-akawanye mbụ n'okpuru ike ike ike agha agha.Ebe mgbaze ya dị elu (ihe dịka 165 degrees centigrade).Ka ọ dị ọkụ na-arụ ọrụ.Dị ka (100 degrees centigrade) nwere ike ịkwado maka oge dị mkpirikpi na-enweghị mmebi na akụrụngwa fiber.
Enwere ike ịgwakọta eriri polypropylene ịbụ hydrophobic n'ụzọ dị mfe n'ihi na ha achọghị kọntaktị ogologo oge n'oge agwakọta na ọ dị mkpa ka ọ kpagbuo ya na ngwakọta ahụ.
Polypropylene fibers dị mkpụmkpụ n'ime obere nha nha dị n'etiti 0.5 ruo 15 nke a na-ere ahịa na kọmpụta.
Fig.1: Polypropylene eriri mesiri ike ciment-mortar na ihe
3. GFRC - Glass Fiber Reinforced Concrete
A na-emepụta eriri iko site na 200-400 filaments nke ọ bụla nke na-ejikọta ya na ejighị ya kpọrọ ihe iji guzobe ihe nkwụnye.Enwere ike igbutu ihe nkwụnye ndị a n'ogologo dị iche iche, ma ọ bụ jikọta iji mee akwa akwa ma ọ bụ teepu.N'iji usoro ngwakọta a na-emekarị maka ihe nkịtị, ọ gaghị ekwe omume ịgwakọta ihe karịrị 2% (site na olu) nke eriri ogologo 25mm.
Ngwa kachasị mma nke eriri iko bụ na-eme ka ciment ma ọ bụ ngwa ngwa matrices siri ike nke e ji emepụta ngwaahịa mpempe akwụkwọ dị mkpa.Ihe a na-ejikarị eme ihe nke eriri iko bụ e-glass eji.Na mesikwuru nke plastics & AR iko E-glass nwere ezughi oke iguzogide alkalis dị na Portland ciment ebe AR-glass emewo ka mma alkali eguzogide àgwà.Mgbe ụfọdụ, a na-agbakwunye polymer na ngwakọta iji meziwanye ụfọdụ ihe anụ ahụ dị ka mmegharị mmiri.
Fig.2: Glass-fiber agbakwunyere ihe
4. Asbestos Fibers
Ejikọtala eriri ịnweta dị ọnụ ala dị ọnụ ala, asbestos, yana mado ciment Portland wee mepụta ngwaahịa a na-ejikarị eme ihe nke a na-akpọ ciment asbestos.Asbestos fibers ebe a thermal mechanical & chemical resistance na-eme ka ha dabara maka ọkpọkọ ngwaahịa, taịlị na ihe mkpuchi ụlọ.bọọdụ ciment asbestos dị ihe dị ka okpukpu abụọ ma ọ bụ anọ karịa nke matriks na-akwadoghị.Otú ọ dị, n'ihi ogologo oge dị mkpirikpi (10mm) eriri nwere mmetụta dị ala.
Fig.3: eriri asbestos
5. Carbon Fibers
Fibre carbon sitere na nke kacha ọhụrụ & ihe gbasara nke puru omume mgbakwunye kacha dị egwu na ụdị eriri dị maka iji azụmaahịa.Fibre carbon na-abịa n'okpuru modulus dị elu nke ike na-agbanwe agbanwe.Ndị a na-agbasawanye.Achọpụtala ike ha na ịdị ike ha dị elu karịa nke ígwè.Ma ha na-adị mfe imebi karịa ọbụna eriri iko, ya mere a na-ejikarị mkpuchi arụkwaghịm mesoo ha.
Fig.4: Carbon eriri
6. Organic Fibers
Fiber Organic dị ka polypropylene ma ọ bụ eriri eke nwere ike ịbụ kemịkalụ karịa ma ọ bụ nchara ma ọ bụ eriri iko.Ha dịkwa ọnụ ala, karịsịa ma ọ bụrụ na eke.Enwere ike iji nnukwu eriri akwụkwọ nri nweta ọtụtụ ihe mgbagwoju anya.Enwere ike idozi nsogbu nke ịgwakọta na nkesa otu site na ịgbakwunye superplasticizer.
Fig.5: Organic eririr
Oge nzipu: Jul-23-2022