[vc_row equal_height=”yes” row_content_width=”grid”][vc_column][vc_single_image image=”4056″ img_size=”full”][\/vc_column][\/vc_row][vc_row][vc_column]
UHPC terimi, Ultra Y\u00fcksek Performansl\u0131 Elyaf Takviyeli Beton anlam\u0131na gelir. Bu terim, her kelimenin ger\u00e7ek anlam\u0131n\u0131n \u00f6tesinde gizlenen ve somut teknolojik altyap\u0131ya dayal\u0131 olarak daha fazla a\u00e7\u0131klama gerektiren \u00e7e\u015fitli \u00f6zellikleri ve teknolojileri kapsar. Bu makalede, UHPC’nin do\u011fu\u015fuyla sonu\u00e7lanan s\u00fcrekli s\u00fcrecin geni\u015f bir perspektifini ve bu terimin ger\u00e7ekte ne anlama geldi\u011finin bir tan\u0131m\u0131n\u0131 sunmaya \u00e7al\u0131\u015f\u0131yoruz. Geleneksel betonun UHPC’ye d\u00f6n\u00fc\u015fmesinin yolu ve nedenleri, UHPC’yi anlamaya ba\u015flamak i\u00e7in atmam\u0131z gereken ilk ad\u0131md\u0131r.<\/p>\n
Betonun tarihi Roma \u0130mparatorlu\u011fu’na kadar uzansa da g\u00fcn\u00fcm\u00fczde kullan\u0131lan modern betonun tarihinin, Joseph Aspdin’in Portland \u00e7imentosu adl\u0131 bir malzemeyi patentlemesi ile 1824 y\u0131l\u0131nda ba\u015flad\u0131\u011f\u0131 d\u00fc\u015f\u00fcn\u00fclebilir. Kalsine edilmi\u015f ve ince par\u00e7ac\u0131klar halinde \u00f6\u011f\u00fct\u00fclm\u00fc\u015f belirli bir oranda kire\u00e7ta\u015f\u0131, kil ve di\u011fer minerallerin kar\u0131\u015f\u0131m\u0131ndan olu\u015fuyordu. Bu \u00e7imentonun \u00e7ak\u0131l, tu\u011fla tozu, kum, k\u0131rma ta\u015f veya di\u011fer agregalarla kar\u0131\u015ft\u0131r\u0131larak \u015fimdi beton dedi\u011fimiz \u015feyi \u00fcretmesi uzun s\u00fcrmedi.<\/p>\n
Betonun m\u00fchendis uygulamalar\u0131nda kullan\u0131lmas\u0131yla ilgili temel sorunlar, d\u00fc\u015f\u00fck \u00e7ekme mukavemeti ve malzemenin s\u00fcneklik eksikli\u011fi ile ilgiliydi. 19. y\u00fczy\u0131l\u0131n ortalar\u0131nda ara\u015ft\u0131rmac\u0131lar, beton kar\u0131\u015f\u0131m\u0131na metalik bir takviye ekleyerek bu sorunlar\u0131n k\u0131smen \u00e7\u00f6z\u00fclebilece\u011fini fark ettiler. Muhtemelen g\u00fcn\u00fcm\u00fczde ‘betonarme’ olarak bilinen \u015fey, 1849 y\u0131l\u0131nda b\u00fcy\u00fck saks\u0131lara \u00e7elik \u00e7ubuklar\u0131n bir k\u0131sm\u0131ndan olu\u015fan demir donat\u0131 ekleyen Frans\u0131z bah\u00e7\u0131van Joseph Monier ile ba\u015flam\u0131\u015ft\u0131r. 1853, hala ayakta.<\/p>\n
Bu uygulamada duvarlar\u0131 tek par\u00e7a halinde tutmak ve betona mukavemet kazand\u0131rmak yerine hacim kazand\u0131rmak i\u00e7in \u00e7elik kullan\u0131lm\u0131\u015ft\u0131r. Daha sonra \u00e7elik \u00e7ubuklarla betonarme kullanman\u0131n ana avantajlar\u0131, esas olarak Monier ve Hennebique taraf\u0131ndan kiri\u015fler, borular, kaz\u0131klar ve d\u00f6\u015feme plakalar\u0131 i\u00e7in \u00e7e\u015fitli patentli in\u015faat y\u00f6ntemlerinin geli\u015ftirilmesiyle g\u00f6sterildi. G\u00fcn\u00fcm\u00fcz yap\u0131 teknolojisinin temelleri bu geli\u015fmelerle at\u0131lm\u0131\u015ft\u0131r. 19. y\u00fczy\u0131lda \u00e7eli\u011fin betonla birle\u015fmesi, 20. y\u00fczy\u0131l\u0131n m\u00fckemmel yap\u0131 malzemesi olan betonun geli\u015fmesini sa\u011flam\u0131\u015ft\u0131r.<\/p>\n
Bilim adamlar\u0131 ve m\u00fchendisler, 20. y\u00fczy\u0131l boyunca beton teknolojisini ve tasar\u0131m\u0131n\u0131 geli\u015ftirmeye odakland\u0131lar. Bu s\u00fcre zarf\u0131nda beton matrisin \u00f6zellikleri de d\u00fczeldi: Ancak beton ve betonarme ile ilgili baz\u0131 sorunlar devam etti. Bunlar a\u011f\u0131rl\u0131k, d\u00fc\u015f\u00fck \u00e7ekme\/bas\u0131n\u00e7 dayan\u0131m\u0131, y\u00fcksek a\u011f\u0131rl\u0131k\/dayan\u0131m oran\u0131, zay\u0131f hacimsel kararl\u0131l\u0131k, zay\u0131f tokluk ve yetersiz tokluktur.<\/p>\n
Bilim adamlar\u0131 ve m\u00fchendisler betondaki bu eksiklikleri gidermek i\u00e7in \u00e7ok \u00e7al\u0131\u015ft\u0131lar ve bunu k\u0131smen de olsa ba\u015fard\u0131lar.
\nNas\u0131l?<\/p>\n
Artan bas\u0131n\u00e7 dayan\u0131m\u0131
\nKar\u0131\u015f\u0131ma lif ekleme
\nBetondaki partik\u00fcl yo\u011funlu\u011funu optimize ederek.
\nBeton bas\u0131n\u00e7 dayan\u0131m\u0131n\u0131 art\u0131rma yar\u0131\u015f\u0131, \u00e7ekme dayan\u0131m\u0131, kesme dayan\u0131m\u0131 veya ba\u011f dayan\u0131m\u0131 gibi di\u011fer \u00f6zellikleri de art\u0131rd\u0131\u011f\u0131 i\u00e7in 20. y\u00fczy\u0131l\u0131n ortalar\u0131nda ba\u015flad\u0131. 1980’lerde, y\u00fcksek dayan\u0131ml\u0131 beton \u00fcretmenin yolu, d\u00fc\u015f\u00fck su-ba\u011flay\u0131c\u0131 oranlar\u0131, agrega par\u00e7ac\u0131klar\u0131n\u0131n \u00f6zel se\u00e7imi ve s\u0131n\u0131fland\u0131r\u0131lmas\u0131 ve su azalt\u0131c\u0131 katk\u0131 maddeleri ile bilinir hale geldi. O zaman, d\u00fcnyan\u0131n d\u00f6rt bir yan\u0131ndaki ara\u015ft\u0131rmac\u0131lar, s\u0131ras\u0131yla Y\u00fcksek Mukavemetli Beton ve Y\u00fcksek Performansl\u0131 Beton anlam\u0131na gelen HSC ve HPC terimlerini ortaya \u00e7\u0131kard\u0131lar. Y\u00fcksek Dayan\u0131ml\u0131 Beton terimi, karakteristik bas\u0131n\u00e7 dayan\u0131m\u0131 50 ile 120 MPa aras\u0131nda olan bir betonu ifade eder; Y\u00fcksek Performansl\u0131 Beton terimi, geli\u015ftirilmi\u015f dayan\u0131kl\u0131l\u0131k \u00f6zelliklerine sahip HSC’yi i\u00e7eriyordu.<\/p>\n
Bununla birlikte, bas\u0131n\u00e7 dayan\u0131m\u0131 ne kadar y\u00fcksek olursa, matris o kadar k\u0131r\u0131lgan hale gelir. Bu, kar\u0131\u015f\u0131ma lif eklenerek \u00e7\u00f6z\u00fclebilen betonda istenmeyen bir etkidir. 1970’lerin ba\u015f\u0131nda, Fiber Takviyeli Beton (FRC) terimi ilk olarak fiber \u015fekli, en-boy oran\u0131, miktar\u0131 veya kullan\u0131lan malzemeden ba\u011f\u0131ms\u0131z olarak herhangi bir fiber donat\u0131 tipine sahip bir betona at\u0131fta bulunmak i\u00e7in kullan\u0131ld\u0131. O zamandan beri, farkl\u0131 lif t\u00fcrleri (\u015fekil, en boy oran\u0131, malzeme t\u00fcr\u00fc) ve miktarlar\u0131 ile ilgilenen ve lif kullan\u0131m\u0131n\u0131n \u00e7ekme mukavemetini, s\u00fcnekli\u011fi, sertli\u011fi, \u00e7atlak kontrol\u00fcn\u00fc ve toklu\u011fu iyile\u015ftirdi\u011fini g\u00f6steren lif takviyeli beton \u00fczerine ara\u015ft\u0131rmalar hi\u00e7 durmad\u0131.
\nYukar\u0131da a\u00e7\u0131klanan \u00fc\u00e7 teknolojinin kombinasyonu, 1995 y\u0131l\u0131nda \u00e7ok ince tozlardan (\u00e7imento, kum, kuvars tozu ve silis duman\u0131, iri agrega veya \u00e7ak\u0131l i\u00e7ermeyen) olu\u015fan yo\u011fun bir par\u00e7ac\u0131k kar\u0131\u015f\u0131m\u0131 olan Reaktif Beton Tozu (RPC) haline geldi. Bu yeni kar\u0131\u015f\u0131ma \u00e7elik lif ve ard\u0131ndan s\u00fcper ak\u0131\u015fkanla\u015ft\u0131r\u0131c\u0131lar eklenerek son derece d\u00fc\u015f\u00fck su-ba\u011flay\u0131c\u0131 oranlar\u0131 ile elde edilmi\u015ftir.<\/p>\n
21. y\u00fczy\u0131ldan itibaren, RPC terimi, d\u00fcnya \u00e7ap\u0131nda beton teknolojisi evriminde kullan\u0131lan tarihsel terimleri koruyarak, yava\u015f yava\u015f UHPFRC (Ultra Y\u00fcksek Performansl\u0131 Elyaf Takviyeli Beton) ile de\u011fi\u015ftirildi. UHPC terimini Ultra Y\u00fcksek Performansa at\u0131fta bulunmak i\u00e7in kullanmak daha yayg\u0131n (ve daha basittir).[\/vc_column_text][vc_empty_space]\t\t<\/div>\n\t<\/div>\n<\/div><\/div>[\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"
[vc_row equal_height=”yes” row_content_width=”grid”][vc_column][vc_single_image image=”4056″ img_size=”full”][\/vc_column][\/vc_row][vc_row][vc_column][\/vc_column][\/vc_row]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"full-width.php","meta":{"footnotes":""},"class_list":["post-1099","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/dekkap.com\/tr\/wp-json\/wp\/v2\/pages\/1099","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dekkap.com\/tr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dekkap.com\/tr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dekkap.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dekkap.com\/tr\/wp-json\/wp\/v2\/comments?post=1099"}],"version-history":[{"count":0,"href":"https:\/\/dekkap.com\/tr\/wp-json\/wp\/v2\/pages\/1099\/revisions"}],"wp:attachment":[{"href":"https:\/\/dekkap.com\/tr\/wp-json\/wp\/v2\/media?parent=1099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}