Nā ʻano like ʻole o ka Fiber Reinforced Concrete

1. Paʻa kila Fiber i hoʻoikaika ʻia

Loaʻa nā ʻano ʻano fiber kila ma ke ʻano he hoʻoikaika.Hana ʻia ke ʻano mea maʻamau ma ke ʻoki ʻana i ka uwea pōʻai i ka lōʻihi pōkole.Aia ke anawaena maʻamau ma waena o 0.25 a 0.75mm.Hana ʻia nā ʻili kila me ka ʻāpana ʻehā c/s ma ka hoʻoheheʻe ʻia ʻana o nā ʻili ma kahi o 0.25mm ka mānoanoa.

Hana ʻia ka pulupulu mai ke kila māmā i huki ʻia.E like me ka IS: 280-1976 me ke anawaena o ka uwea e like me 0.3 a 0.5mm ua hoʻohana maʻalahi ʻia ma India.

Hana ʻia nā pulu kila pōʻai ma ka ʻoki ʻana a i ʻole ke ʻoki ʻana i ka uea.

ʻO ka fiber deformed, kahi i hoʻopaʻa ʻia me ka wai-soluble glue i ke ʻano o kahi pūpū.Ma muli o ka hui pū ʻana o kēlā me kēia fiber, paʻakikī pinepine kā lākou mahele like ʻana i ka matrix.Hiki ke pale ʻia kēia ma ka hoʻohui ʻana i nā pūpū fibers, e hoʻokaʻawale i ka wā o ka hui ʻana.

2. ʻO ka Polypropylene Fiber Reinforced (PFR) cement mortar a me ka pahu

ʻO ka polypropylene kekahi o nā polymers polypropylene fibers hiki ke kūʻai aku i ka nui o nā mea kemika & ʻo ia ka matrix cementitious e hōʻemi mua ʻia ma lalo o ka hoʻouka kaua ʻana.He kiʻekiʻe kona helu heheʻe (e pili ana i 165 degere centigrade).No laila kahi mahana hana.Hiki ke hoʻomau ʻia ke ʻano (100 degere centigrade) no nā manawa pōkole me ka ʻole o ka pōʻino i nā waiwai fiber.

Hiki ke hoʻohui maʻalahi i nā fibers polypropylene hydrophobic no ka mea ʻaʻole pono lākou i ka pilina lōʻihi i ka wā e hui pū ai a pono e hoʻopilikia wale ʻia i ka hui.

ʻO nā pulupulu pōkole polypropylene i nā hakina liʻiliʻi liʻiliʻi ma waena o 0.5 a hiki i 15 i hoʻohana ʻia i ke kaʻa.

Fig.1: Polypropylene fiber i hoʻoikaika ʻia i ka sima-motar a me ka ʻuala

3. GFRC - Ke aniani Fiber Reinforced Concrete

Hana ʻia ka fiber aniani mai 200-400 mau filament i hoʻopaʻa māmā ʻia e hana i kahi kū.Hiki ke ʻoki ʻia kēia mau kū i nā lōʻihi like ʻole, a i hui pū ʻia e hana i ka moena lole a i ʻole ka lipine.Me ka hoʻohana ʻana i nā ʻenehana hoʻohuihui maʻamau no ka palaki maʻamau ʻaʻole hiki ke hoʻohui ʻia ma mua o 2% (ma ka nui) o nā fiber o ka lōʻihi o 25mm.

ʻO ka mea hana nui o ka fiber aniani ka hoʻoikaika ʻana i ka sima a i ʻole nā ​​mortar matrices i hoʻohana ʻia i ka hana ʻana i nā huahana pepa lahilahi.ʻO nā ʻoiaʻiʻo i hoʻohana mau ʻia o nā fiber aniani he e-glass i hoʻohana ʻia.I ka hoʻoikaika ʻia o nā plastics & aniani AR ʻaʻole lawa ke kūʻē ʻana o ke aniani i nā alkalis i loaʻa ma Portland cement kahi i hoʻomaikaʻi ai ʻo AR-aniani i nā hiʻohiʻona kūpaʻa alkali.I kekahi manawa, hoʻohui pū ʻia nā polymers i loko o nā hui e hoʻomaikaʻi i kekahi mau waiwai kino e like me ka neʻe ʻana o ka wai.

Fig.2: Ke aniani-fiber i hoʻoikaika ʻia

4. Huina Asbestos

Ua hoʻohui maikaʻi ʻia ka fiber mineral inexpensive inexpensive, asbestos, me Portland cement paste e hana i kahi huahana hoʻohana nui ʻia i kapa ʻia ʻo asbestos cement.ʻO nā fibers asbestos ma aneʻi me ke kūpaʻa ʻana o ka mīkini wela a me ke kemika e kūpono ai ia no nā paipu huahana pepa, nā ʻili a me nā mea hale corrugated.ʻO ka papa sima Asbestos ma kahi o ʻelua a ʻehā paha manawa o ka matrix i hoʻoikaika ʻole ʻia.Eia nō naʻe, ma muli o ka lōʻihi pōkole (10mm) he haʻahaʻa ka ikaika o ka fiber.

Fig.3: ʻO ka fiber asbestos

5. Na Uila Kalapona

ʻO nā fiber carbon mai ka mea hou loa & hiki ke hoʻohui hou ʻia i ka laulā o ka fiber i loaʻa no ka hoʻohana ʻana i ke kālepa.Hele mai ka carbon fiber ma lalo o ka modulus kiʻekiʻe loa o ka elasticity a me ka ikaika flexural.He ākea kēia.Ua ʻike ʻia ko lākou ikaika a me ka ʻoʻoleʻa i ʻoi aku ka maikaʻi ma mua o ke kila.Akā ʻoi aku ka maʻalahi o ka pōʻino ma mua o ka fiber aniani, a no laila e mālama ʻia me ka uhi haʻalele.

Fig.4: ʻO nā pulu kalapona

6. Nā Pilikino Organic

ʻOi aku ka ikaika o ka fiber organik e like me ka polypropylene a i ʻole ka fiber maoli ma mua o ke kila a i ʻole ke aniani.He ʻoi aku ka maʻalahi, ʻoi aku ka maikaʻi inā kūlohelohe.Hiki ke hoʻohana ʻia kahi puʻupuʻu nui o ka mea kanu no ka loaʻa ʻana o ka composite māwae.Hiki ke hoʻopau ʻia ka pilikia o ka hui ʻana a me ka hoʻopuehu ʻana me ka hoʻohui ʻana i kahi superplasticizer.

Fig.5: ʻO ka fiber organikr