Ngwongwo nchara nchara nchara (SFRC) bụ ụdị ihe ejikọtara ọnụ ọhụrụ nke enwere ike ịwụsa wee fesa ya site n'ịgbakwụnye obere eriri igwe kwesịrị ekwesị n'ime kọmpụta nkịtị.Ọ tolitere ngwa ngwa n'ụlọ na ná mba ọzọ n'afọ ndị na-adịbeghị anya.Ọ na-emeri adịghị ike nke ike tensile dị ala, obere elongation kacha elu na ihe na-akụrisị ihe.Ọ nwere ihe ndị magburu onwe ya dị ka ike nkwụsị, nkwụsị nkwụsị, nkwụsị nkwụsị, nkwụsị mgbawa, ike ọgwụgwụ na elu siri ike.etinyere ya na injinia hydraulic, okporo ụzọ na akwa mmiri, ihe owuwu na ngalaba injinia ndị ọzọ.
1. Mmepe nke eriri ígwè na-emesi ike
Fiber agbakwunyere konkịtị (FRC) bụ mbiri nke kọmpụta agbakwunyere eriri.Ọ na-abụkarị ihe mejupụtara simenti nke nwere tapawa ciment, ngwa agha ma ọ bụ kọmpat na eriri igwe, eriri inorganic ma ọ bụ ihe ndị a na-emesi ike.Ọ bụ ọhụrụ ụlọ ihe kpụrụ site uniformly dispersing mkpụmkpụ na ezi emep uta eri na elu tensile ike, elu kacha elongation na elu alkali iguzogide na ihe matriks.Fiber na ihe nwere ike igbochi ọgbọ nke mbụ cracks na ihe na n'ihu mgbasa nke cracks n'okpuru omume nke mpụga ike, n'ụzọ dị irè imeri pụta ụwa ntụpọ dị ka ala tensile ike, mfe cracking na ogbenye ike ọgwụgwụ na-eguzogide nke ihe, na ukwuu melite arụmọrụ. nke impermeability, waterproof, ntu oyi na-eguzogide na mkwado nchebe nke ihe.Fiber gbasiri ike, ọkachasị eriri igwe gbadoro anya, adọtala nlebara anya karịa na ngalaba agụmakwụkwọ na injinịa na injinịa bara uru n'ihi arụmọrụ ya dị elu.1907 ọkachamara Soviet B П.Hekpocab malitere iji kọmpụta a na-emesi ike nke igwe;N'afọ 1910, HF Porter bipụtara akụkọ nyocha banyere obere eriri na-emesi ike, na-atụ aro na a ga-agbasasị eriri ígwè dị mkpụmkpụ n'otu n'otu na kọmpụta iji wusie ihe matriks ike;N'afọ 1911, Graham nke United States gbakwunyere eriri ígwè n'ime kọmpụta nkịtị iji meziwanye ike na nkwụsi ike nke kọnkịtị;Ka ọ na-erule n'afọ 1940, United States, Britain, France, Germany, Japan na mba ndị ọzọ emeela ọtụtụ nyocha na iji eriri igwe na-eme ka ihe mgbochi na mgbawa na-eguzogide ihe, nkà na ụzụ mmepụta nke ígwè eriri ígwè, na imeziwanye udi nke ígwè eriri iji meziwanye ike nkekọ n'etiti eriri na ihe matrix;N'afọ 1963, JP romualdi na GB Batson bipụtara akwụkwọ gbasara usoro mmepe mgbape nke ígwè fiber confined concrete, wee kwupụta na ike mgbawa nke eriri ígwè na-emesi ike na-ekpebi site na nkezi oghere nke eriri ígwè nke na-arụ ọrụ dị irè. na nrụgide tensile (echiche nke spacing fiber), si otú a malite usoro mmepe bara uru nke ihe ọhụrụ a mejupụtara.Ruo ugbu a, na popularization na ngwa nke ígwè eriri mesikwuru ihe, n'ihi na dị iche iche nkesa emep uta eri na ihe, e nwere tumadi anọ ụdị: ígwè eriri mesikwuru ihe, ngwakọ eriri mesikwuru ihe, oyi akwa ígwè eriri mesikwuru ihe na Layered ngwakọ eriri. ihe mesiri ike.
2. usoro ike nke ígwè eriri na-emesi ike
(1) Ozizi usoro ihe mejupụtara.Ozizi nke mechanics mejupụtara dabeere na tiori nke na-aga n'ihu eriri composites na jikọtara ya na nkesa e ji mara nke ígwè emep uta eri na ihe.Na tiori a, a na-ahụta ihe ndị mejupụtara dị ka akụkụ abụọ nke nwere eriri dị ka otu akụkụ na matrix dị ka akụkụ nke ọzọ.
(2) Ozizi spacing fiber.A na-atụpụta ụkpụrụ oghere eriri eriri, nke a makwaara dị ka tiori nguzogide mgbape, dabere na usoro mgbaji mgbaji linear.Ozizi a na-ekwusi ike na mmetụta nkwado nke eriri na-ejikọta naanị na oghere eriri nke ekesara n'otu n'otu (opekempe ohere).
3. Nyocha banyere mmepe ọnọdụ nke ígwè eriri mesikwuru ihe
1.Steel eriri mesikwuru ihe.Steel eriri mesikwuru ihe bụ ụdị dịtụ edo na multi-directional mesikwuru ihe kpụrụ site na-agbakwunye a obere ego nke ala carbon ígwè, igwe anaghị agba nchara na FRP emep uta eri n'ime nkịtị ihe.The Ịgwakọta ego nke ígwè eriri bụ n'ozuzu 1% ~ 2% site olu, mgbe 70 ~ 100kg ígwè eriri na-agwakọta na onye ọ bụla cubic mita nke ihe site arọ.Ogologo ígwè eriri kwesịrị ịbụ 25 ~ 60mm, dayameta kwesịrị ịbụ 0.25 ~ 1.25mm, na ihe kacha mma nke ogologo na dayameta kwesịrị ịbụ 50 ~ 700. Tụnyere ihe ndị nkịtị, ọ bụghị naanị na-eme ka ọkpụkpụ ahụ dịkwuo mma, shiee, na-ehulata. , eyi na mgbape eguzogide, ma ukwuu welie mgbaji siri ike na mmetụta na-eguzogide nke ihe, na budata mma ike ọgwụgwụ na-eguzogide na anwụ ngwa ngwa nke Ọdịdị, karịsịa ndị siri ike nwere ike mụbara site 10 ~ 20 ugboro.The n'ibu Njirimara nke ígwè eriri mesikwuru ihe na nkịtị ihe na-tụnyere na China.Mgbe ọdịnaya nke eriri ígwè bụ 15% ~ 20% na mmiri ciment ruru 0.45, ike nkwụsị na-abawanye site na 50% ~ 70%, ike mgbanwe na-abawanye site na 120% ~ 180%, ike mmetụta na-abawanye site na 10 ~ 20. oge, ike ike ọgwụgwụ mmetụta na-abawanye site na 15 ~ 20 ugboro, ike na-agbanwe agbanwe na-abawanye site na 14 ~ 20 ugboro, na nguzogide iyi na-emekwa ka ọ dịkwuo mma.Ya mere, ígwè eriri mesikwuru ihe nwere mma anụ ahụ na n'ibu Njirimara karịa larịị ihe.
4. Ngwakọ eriri ihe
Nchọpụta nyocha dị mkpa na-egosi na eriri igwe anaghị akwalite ike mkpakọ nke kọnkịrị, ma ọ bụ ọbụna belata ya;Tụnyere larịị ihe, e nwere nti na-adịghị mma (mmụba na ibelata) ma ọ bụ ọbụna etiti echiche na impermeability, eyi iguzogide, mmetụta na eyi iguzogide ígwè eriri mesikwuru ihe na mgbochi nke mbụ plastic shrinkage nke ihe.Ke adianade do, ígwè eriri mesikwuru ihe nwere ụfọdụ nsogbu, dị ka nnukwu onunu ogwu, elu price, nchara na ọ fọrọ nke nta ọ dịghị iguzogide igbawa nke ọkụ kpatara, nke emetụtala ngwa ya dị iche iche.N'ime afọ ndị na-adịbeghị anya, ụfọdụ ndị ọkà mmụta ụlọ na mba ọzọ malitere ịṅa ntị na ngwakọ eriri ihe (HFRC), na-agbalị ịgwakọta eriri dị iche iche na uru dị iche iche, mụta ihe site na ibe ya, na-enye egwuregwu na "mmetụta ngwakọ dị mma" na ọkwa dị iche iche na loading nkebi ka welie iche iche Njirimara nke ihe, ka izute mkpa nke dị iche iche oru ngo.Otú ọ dị, n'ihe banyere ya dị iche iche n'ibu Njirimara, karịsịa ya ike ọgwụgwụ deformation na ike ọgwụgwụ mmebi, deformation mmepe iwu na mmebi e ji mara n'okpuru static na ike ibu na mgbe niile njupụta ma ọ bụ mgbanwe njupụta cyclic ibu, kacha mma ịgwakọta ego na ịgwakọta nkezi nke eriri, mmekọrịta. n'etiti akụkụ nke ihe mejupụtara, mmetụta na-ewusi ike na usoro ike, mgbochi ike ọgwụgwụ arụmọrụ, ọdịda usoro na-ewu technology, nsogbu nke mix proportion imewe mkpa ka a ga-amụkwu.
5. Layered ígwè eriri mesikwuru ihe
Monolithic fiber mesiri ihe adịghị mfe ịgwakọta evenly, eriri dị mfe agglomerate, ego nke eriri dị ukwuu, na ọnụ ahịa dịtụ elu, nke na-emetụta ya sara mbara ngwa.Site na ọnụ ọgụgụ dị ukwuu nke omume injinia na nyocha nyocha, a na-atụpụta ụdị ụdị eriri nchara ọhụrụ, ihe eji eme ka eriri igwe gbasie ike (LSFRC).A na-ekesa obere eriri ígwè n'otu n'otu n'elu elu na nke ala nke oghere okporo ụzọ, na etiti ka bụ oyi akwa siri ike.A na-ekesa eriri igwe dị na LSFRC na aka ma ọ bụ n'usoro.The ígwè eriri bụ ogologo, na ogologo dayameta ruru bụ n'ozuzu n'etiti 70 ~ 120, na-egosi a abụọ akụkụ.Na-enweghị emetụta n'ibu Njirimara, a ihe onwunwe bụghị nanị na-ebelata ego nke ígwè eriri, ma na-ezere onu nke eriri agglomeration na Ịgwakọta nke integral eriri mesikwuru ihe.Tụkwasị na nke ahụ, ọnọdụ nke oyi akwa ígwè ígwè na ihe nwere mmetụta dị ukwuu na ike mgbanwe nke ihe.Mmetụta nkwado nke oyi akwa ígwè eriri na ala nke ihe kacha mma.Na ọnọdụ nke eriri eriri igwe na-arị elu, mmetụta nkwado na-ebelata nke ukwuu.Ike mgbanwe nke LSFRC karịrị 35% dị elu karịa nke kọmpụta dị larịị nwere otu nha ngwakọta, nke dị ntakịrị ala karịa nke eriri igwe agbakwunyere.Otú ọ dị, LSFRC nwere ike ịzọpụta ọtụtụ ihe onwunwe na-eri, na ọ dịghị nsogbu nke siri ike ịgwakọta.Ya mere, LSFRC bụ ihe ọhụrụ nwere ezigbo uru ọha na eze na akụ na ụba yana atụmanya ngwa sara mbara, nke kwesịrị ịkwalite mgbasa ozi na ngwa n'ime ihe owuwu pavement.
6. Layered ngwakọ eriri ihe
Ngwakọ ngwakọ eriri ihe na-emesi ike (LHFRC) bụ ihe mejupụtara ihe mejupụtara site na ịgbakwunye 0.1% polypropylene fiber na ndabere nke LSFRC na ọbụna na-ekesa ọnụ ọgụgụ dị ukwuu nke mma na mkpụmkpụ polypropylene fibers na nnukwu tensile ike na elu ikpeazụ elongation na elu na ala ígwè. eriri ihe na ihe dị larịị na oyi akwa etiti.Ọ nwere ike imeri adịghị ike nke LSFRC etiti kọmpat oyi akwa ma gbochie ihe egwu nchekwa ndị nwere ike ime mgbe eriri igwe elu gwụchara.LHFRC nwere ike ịkwalite ike ngbanwe nke kọnkịta.E jiri ya tụnyere ihe dị larịị, ike mgbanwe ya nke ihe dị larịị na-abawanye ihe dị ka 20%, ma e jiri ya tụnyere LSFRC, ike mgbanwe ya na-abawanye site na 2.6%, mana ọ na-enwe mmetụta dị nta na mgbanwe mgbanwe mgbanwe nke kọnkịta.Module ngbanwe mgbanwe nke LHFRC dị 1.3% dị elu karịa nke kọmpụta nkịtị yana 0.3% dị ala karịa nke LSFRC.LHFRC nwekwara ike ime ka ike siri ike nke kọnkịrị dịkwuo mma, yana ntụzịaka ike ngbanwe ya dị ihe dị ka okpukpu asatọ karịa nke kọmpat na 1.3 ugboro nke LSFRC.Ọzọkwa, n'ihi na dị iche iche arụmọrụ nke abụọ ma ọ bụ karịa emep uta eri na LHFRC na ihe, dị ka engineering mkpa, nti ngwakọ mmetụta nke sịntetik eriri na ígwè eriri na ihe nwere ike iji mee ka ukwuu mma na ductility, anwụ ngwa ngwa, siri ike, mgbape ike. , ike na-agbanwe agbanwe na ike nkwụsị nke ihe onwunwe, meziwanye àgwà ihe na ịgbatị ndụ ọrụ nke ihe ahụ.
——Akụkụ (ihe owuwu Shanxi, Vol. 38, Nke 11, Chen Huiqing)
Oge nzipu: Ọgọst-24-2022